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DTC U1002: Lost Communication with Gateway Module [10/2014 - 10/2015]: Procedure

  1. CHECK SUB BUS 11 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Measure the resistance according to the value(s) in the table below.
      GTY609713Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition Result
      D104-34 (CA2H) - D104-35 (CA2L) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω Below 54 Ω:
      Short circuit between bus lines
      70 Ω or higher:
      Open circuit in main bus lines
      D104-34 (CA2H) - D104-6 (E1) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short
      D104-35 (CA2L) - D104-6 (E1) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      D104-34 (CA2H) - D104-1 (AM22) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short
      D104-35 (CA2L) - D104-1 (AM22) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (Power Management Control ECU)

      Result

      Result Proceed to
      OK A
      Open circuit in CAN main bus line B
      Short circuit between bus lines C
      • Ground short
      • +B short
      		 D

    Result: 

    B 

    See step  3

    Result: 

    C 

    See step  8

    Result: 

    D 

    See step  15

    Result: 

    A 

    See step  2

  2. RECONFIRM DTC OUTPUT 
    1. Reconnect the cable to the negative (-) auxiliary battery terminal.
    2. Connect the Techstream to the DLC3.
    3. Turn the power switch on (IG).
    4. Turn the Techstream on.
    5. Clear the DTCs.
    6. Turn the power switch off.
    7. Turn the power switch on (IG) and recheck for DTCs.

      Result

      Result Proceed to
      U1002 is output from power management control ECU
      (Techstream display: PM1 Gateway)      		 A
      Other DTC is output. B

    Result: 

    A 

    REPLACE POWER MANAGEMENT CONTROL ECU 

    (Refer to REMOVAL [10/2014 - 10/2015] )

    Result: 

    B 

    GO TO DIAGNOSIS PROCEDURE INDICATED BY OUTPUT DTC 

    (Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2014 - 10/2015] )

  3. CHECK FOR OPEN IN SUB BUS 11 MAIN LINES (POWER MANAGEMENT CONTROL ECU) 
    1. Disconnect the D104 power management control ECU connector.
      GTY609640Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D104-34 (CA2H) - D104-35 (CA2L) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Power Management Control ECU)

    Result: 

    OK 

    REPLACE POWER MANAGEMENT CONTROL ECU 

    (Refer to REMOVAL [10/2014 - 10/2015] )

    Result: 

    NG 

    See step  4

  4. CHECK FOR OPEN IN SUB BUS 11 MAIN LINES (NO. 4 CAN JUNCTION CONNECTOR - POWER MANAGEMENT CONTROL ECU) 
    1. Reconnect the D104 power management control ECU connector.
    2. Disconnect the D116 wire harness connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY580071Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      D116-1 (CANH) - D116-2 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to No. 4 CAN Junction Connector)
      *b to Power Management Control ECU
      NOTE:
      • Before disconnecting the connector, make a note of where it is connected.
      • Reconnect the connector to its original position.

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 4 CAN JUNCTION CONNECTOR - POWER MANAGEMENT CONTROL ECU) 

    Result: 

    OK 

    See step  5

  5. CHECK FOR OPEN IN SUB BUS 11 MAIN LINES (NO. 4 CAN JUNCTION CONNECTOR) 
    1. Reconnect the D116 wire harness connector.
    2. Disconnect the D94 wire harness connector.
      GTY605601Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D94-1 (CANH) - D94-2 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to No. 4 CAN Junction Connector)
      *b to No. 5 CAN Junction Connector
      NOTE:
      • Before disconnecting the connector, make a note of where it is connected.
      • Reconnect the connector to its original position.

    Result: 

    OK 

    REPLACE NO. 4 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  6

  6. CHECK FOR OPEN IN SUB BUS 11 MAIN LINES (NO. 4 CAN JUNCTION CONNECTOR - NO. 5 CAN JUNCTION CONNECTOR) 
    1. Reconnect the D94 wire harness connector.
    2. Disconnect the O16 No. 5 CAN junction connector.
      GTY603365Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      O16-9 (CANH) - O16-20 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      O16-11 (CANH) - O16-22 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to No. 5 CAN Junction Connector)
      *b to No. 2 CAN Junction Terminal
      *c to No. 4 CAN Junction Connector

      Result

      Result Proceed to
      OK A
      NG (to No. 4 CAN junction connector main bus line) B
      NG (to No. 2 CAN junction terminal main bus line) C

    Result: 

    A 

    REPLACE NO. 5 CAN JUNCTION CONNECTOR 

    Result: 

    B 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 4 CAN JUNCTION CONNECTOR - NO. 5 CAN JUNCTION CONNECTOR) 

    Result: 

    C 

    See step  7

  7. CHECK FOR OPEN IN SUB BUS 11 MAIN LINES (NO. 5 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION TERMINAL) 
    1. Reconnect the O16 No. 5 CAN junction connector.
    2. Disconnect the O17 No. 2 CAN junction terminal.
    3. Measure the resistance according to the value(s) in the table below.
      GTY562624Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      O17-3 (CANH) - O17-2 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to No. 2 CAN Junction Terminal)
      *b to No. 5 CAN Junction Connector

    Result: 

    OK 

    REPLACE NO. 2 CAN JUNCTION TERMINAL 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 5 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION TERMINAL) 

  8. CHECK FOR SHORT IN SUB BUS 11 LINES (POWER MANAGEMENT CONTROL ECU) 
    1. Disconnect the D104 power management control ECU connector.
      GTY592780Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D104-34 (CA2H) - D104-35 (CA2L) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Power Management Control ECU)

    Result: 

    OK 

    REPLACE POWER MANAGEMENT CONTROL ECU 

    (Refer to REMOVAL [10/2014 - 10/2015] )

    Result: 

    NG 

    See step  9

  9. CHECK FOR SHORT IN SUB BUS 11 LINES (NO. 4 CAN JUNCTION CONNECTOR - POWER MANAGEMENT CONTROL ECU) 
    1. Reconnect the D104 power management control ECU connector.
    2. Disconnect the D116 wire harness connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY580071Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      D116-1 (CANH) - D116-2 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to No. 4 CAN Junction Connector)
      *b to Power Management Control ECU
      NOTE:
      • Before disconnecting the connector, make a note of where it is connected.
      • Reconnect the connector to its original position.

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 4 CAN JUNCTION CONNECTOR - POWER MANAGEMENT CONTROL ECU) 

    Result: 

    OK 

    See step  10

  10. CHECK FOR SHORT IN SUB BUS 11 LINES (BRANCH LINE) 
    1. Reconnect the D116 wire harness connector.
    2. Connect the probes of an ohmmeter to terminals 1 (CANH) and 2 (CANL) of the power management control ECU main line harness connector.
      GTY572593Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (No. 4 CAN Junction Connector)
    3. While observing the resistance value shown on the tester, disconnect the D93 and D95 connectors from the No. 4 CAN junction connector one by one until the resistance becomes normal (between 54 and 69 Ω).
      GTY482324Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 No. 4 CAN Junction Connector - -
      *a Junction Connector A Side *b Junction Connector B Side
      *c Ground Terminal *d Front view of wire harness connector
      (to No. 4 CAN Junction Connector)
      WIRING COLOR

      No. 4 CAN Junction Connector Side Code Color (CANH Side) Color (CANL Side)
      Seat belt control ECU* D93 B Y
      CAN main bus line (bus line connecting No. 4 CAN junction connector and No. 5 CAN junction connector) D94 BE Y
      Driving support ECU assembly* D95 SB Y
      Power management control ECU D116 LG Y
      • *: w/ Dynamic Radar Cruise Control System
      NOTE:

      Do not reconnect the disconnected connectors until this inspection is complete because there may be a short in 2 or more branch lines.

      Result

      Result Proceed to
      The resistance is still below 54 Ω when all the specified connectors are disconnected. (There are no shorts between a pair of branch lines.) A
      The resistance becomes normal (between 54 and 69 Ω) when a connector is disconnected. (There is a short between one or more pairs of branch lines.) B
    4. When there is a short in one or more of the branch lines:
      1. Reconnect all of the connectors to the CAN junction connectors, except for the one that was disconnected last (the short-circuited bus line). Check that the resistance shown on the tester is normal (between 54 and 69 Ω) to confirm that there is a short in the one branch line only.

        HINT: 

        • Connectors that connect to the CAN junction connector can be distinguished by the color of their CAN bus lines.
        • Reconnecting the connectors to non-original positions on the CAN junction connector does not affect system performance. However, it is preferred to reconnect the connectors to their original positions to avoid negative effects on the wiring such as tension on the wiring harnesses, and to make future maintenance easier.

    Result: 

    B 

    See step  14

    Result: 

    A 

    See step  11

  11. CHECK FOR SHORT IN SUB BUS 11 LINES (NO. 4 CAN JUNCTION CONNECTOR) 
    1. Disconnect the D94 wire harness connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D116-1 (CANH) - D116-2 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (No. 4 CAN Junction Connector)
      NOTE:
      • Before disconnecting the connector, make a note of where it is connected.
      • Reconnect the connector to its original position.
      GTY572593Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Result: 

    NG 

    REPLACE NO. 4 CAN JUNCTION CONNECTOR 

    Result: 

    OK 

    See step  12

  12. CHECK FOR SHORT IN SUB BUS 11 LINES (NO. 4 CAN JUNCTION CONNECTOR - NO. 5 CAN JUNCTION CONNECTOR) 
    1. Reconnect the D94 wire harness connector.
    2. Disconnect the O16 No. 5 CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY557325Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      O16-8 (CANH) - O16-19 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      O16-9 (CANH) - O16-20 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      O16-10 (CANH) - O16-21 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      O16-11 (CANH) - O16-22 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to No. 5 CAN Junction Connector)
      *b to Rear Television Camera Assembly*1
      *c to No. 2 CAN Junction Terminal
      *d to Blind Spot Monitor Sensor LH*2
      *e to No. 4 CAN Junction Connector
      • *1: w/ Parking Assist Monitor System
      • *2: w/ Blind Spot Monitor System

      Result

      Result Proceed to
      OK A
      NG (to No. 4 CAN junction connector main bus line) B
      NG (to No. 2 CAN junction terminal main bus line) C
      NG (to ECU branch lines) D

    Result: 

    A 

    REPLACE NO. 5 CAN JUNCTION CONNECTOR 

    Result: 

    B 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 4 CAN JUNCTION CONNECTOR - NO. 5 CAN JUNCTION CONNECTOR) 

    Result: 

    D 

    See step  14

    Result: 

    C 

    See step  13

  13. CHECK FOR SHORT IN SUB BUS 11 LINES (NO. 5 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION TERMINAL) 
    1. Reconnect the O16 No. 5 CAN junction connector.
    2. Disconnect the O17 No. 2 CAN junction terminal.
    3. Measure the resistance according to the value(s) in the table below.
      GTY562623Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      O17-3 (CANH) - O17-2 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to No. 2 CAN Junction Terminal)
      *b to No. 5 CAN Junction Connector

    Result: 

    OK 

    REPLACE NO. 2 CAN JUNCTION TERMINAL 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 5 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION TERMINAL) 

  14. CHECK FOR SHORT IN SUB BUS 11 LINE (ECUS) 
    1. Reconnect all wire harness connectors (No. 4 CAN junction connector and No. 5 CAN junction connector).
    2. Disconnect the connector that includes terminals CANH and CANL from the ECU (or sensor) to which the short-circuited branch line is connected (Refer to TERMINALS OF ECU [10/2014 - 10/2015] ).
    3. Measure the resistance according to the value(s) in the table below.
      GTY585869Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      D104-34 (CA2H) - D104-35 (CA2L) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (Power Management Control ECU)

      HINT: 

      • If the resistance becomes normal (between 54 and 69 Ω) when the connector is disconnected from the ECU (or sensor), there may be a short in the ECU (or sensor).
      • If the resistance does not become normal (between 54 and 69 Ω) when the connector is disconnected from the ECU (or sensor), repair or replace the short-circuited branch line or connector.

    Result: 

    OK 

    REPLACE CORRESPONDING ECU OR SENSOR 

    Result: 

    NG 

    REPAIR OR REPLACE CORRESPONDING ECU OR SENSOR BRANCH LINES OR CONNECTOR 

  15. CHECK FOR SHORT IN SUB BUS 11 LINE (NO. 4 CAN JUNCTION CONNECTOR - POWER MANAGEMENT CONTROL ECU) 
    1. Disconnect the D116 wire harness connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY610606Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition Purpose
      D116-1 (CANH) - D28-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short
      D116-2 (CANL) - D28-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      D116-1 (CANH) - D28-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short
      D116-2 (CANL) - D28-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      TEXT IN ILLUSTRATION

      *1 DLC3
      *a Rear view of wire harness connector
      (to No. 4 CAN Junction Connector)
      *b to Power Management Control ECU
      NOTE:
      • Before disconnecting the connector, make a note of where it is connected.
      • Reconnect the connector to its original position.

      HINT: 

      • It is only necessary to perform the inspection in the above table for the result (short circuit) that was obtained in the Check Sub Bus 11 inspection.
      • Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check Sub Bus 11 inspection.

    Result: 

    NG 

    See step  21

    Result: 

    OK 

    See step  16

  16. CHECK FOR SHORT IN SUB BUS 11 LINE (BRANCH LINE) 
    1. Reconnect the D116 wire harness connector.
    2. Connect the probes of an ohmmeter to terminals 1 (CANH) and 2 (CANL) of the D116 wire harness connector and CG or BAT of the DLC3.
      GTY608943Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3
      *a Component with harness connected
      (No. 4 CAN Junction Connector)

      HINT: 

      It is only necessary to perform the inspection for the result (short circuit) that was obtained in the Check Sub Bus 11 inspection.

    3. While observing the resistance value shown on the ohmmeter, disconnect the D93 and D95 branch line connectors from the No. 4 CAN junction connector until the resistance becomes normal (6 kΩ or higher (for +B short) or 200 Ω or higher (for ground short)).
      GTY478698Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 No. 4 CAN Junction Connector - -
      *a Junction Connector A Side *b Junction Connector B Side
      *c Ground Terminal *d Front view of wire harness connector
      (to No. 4 CAN Junction Connector)
      WIRING COLOR

      No. 4 CAN Junction Connector Side Code Color (CANH Side) Color (CANL Side)
      Seat belt control ECU* D93 B Y
      CAN main bus line (bus line connecting No. 4 CAN junction connector and No. 5 CAN junction connector) D94 BE Y
      Driving support ECU assembly* D95 SB Y
      Power management control ECU D116 LG Y
      • *: w/ Dynamic Radar Cruise Control System

      Result

      Result Proceed to
      The resistance between terminals CANH and BAT, or the resistance between terminals CANL and BAT is still below 6 kΩ when all the specified connectors are disconnected from the CAN junction connector.
      (There is no short to +B in the branch lines.)      		 A
      The resistance between terminals CANH and GND, or the resistance between terminals CANL and GND is still below 200 Ω when all the specified connectors are disconnected from the CAN junction connector.
      (There is no short to GND in the branch lines.)
      The resistance between terminals CANH and BAT, or the resistance between terminals CANL and BAT becomes normal (6 kΩ or higher) when a connector is disconnected from the CAN junction connector.
      (There is a short to +B in one of the areas related to one or more of the disconnected branch lines.)      		 B
      The resistance between terminals CANH and GND, or the resistance between terminals CANL and GND becomes normal (200 Ω or higher) when a connector is disconnected from the CAN junction connector.
      (There is a short to GND in one of the areas related to one or more of the disconnected branch lines.)

    Result: 

    B 

    See step  20

    Result: 

    A 

    See step  17

  17. CHECK FOR SHORT IN SUB BUS 11 LINE (NO. 4 CAN JUNCTION CONNECTOR) 
    1. Disconnect the D94 wire harness connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY608943Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition Purpose
      D116-1 (CANH) - D28-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short
      D116-2 (CANL) - D28-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      D116-1 (CANH) - D28-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short
      D116-2 (CANL) - D28-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      TEXT IN ILLUSTRATION

      *1 DLC3
      *a Component with harness connected
      (No. 4 CAN Junction Connector)
      NOTE:
      • Before disconnecting the connector, make a note of where it is connected.
      • Reconnect the connector to its original position.

      HINT: 

      • It is only necessary to perform the inspection in the above table for the result (short circuit) that was obtained in the Check Sub Bus 11 inspection.
      • Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check Sub Bus 11 inspection.

    Result: 

    NG 

    REPLACE NO. 4 CAN JUNCTION CONNECTOR 

    Result: 

    OK 

    See step  18

  18. CHECK FOR SHORT IN CAN BUS LINE (NO. 4 CAN JUNCTION CONNECTOR - NO. 5 CAN JUNCTION CONNECTOR) 
    1. Disconnect the O16 No. 5 CAN junction connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY545493Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 5 CAN Junction Connector)      		 *b to Rear Television Camera Assembly*1
      *c to No. 2 CAN Junction Terminal *d to Blind Spot Monitor Sensor LH*2
      *e to No. 4 CAN Junction Connector - -
      • *1: w/ Parking Assist Monitor System
      • *2: w/ Blind Spot Monitor System

      Standard Resistance

      Tester Connection Condition Specified Condition Purpose Connected to
      O16-8 (CANH) - D28-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Inspection for CANH ground short Rear television camera assembly*1
      O16-19 (CANL) - D28-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Inspection for CANL ground short
      O16-9 (CANH) - D28-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Inspection for CANH ground short No. 2 CAN junction terminal
      O16-20 (CANL) - D28-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Inspection for CANL ground short
      O16-10 (CANH) - D28-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Inspection for CANH ground short Blind spot monitor sensor LH*2
      O16-21 (CANL) - D28-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Inspection for CANL ground short
      O16-11 (CANH) - D28-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Inspection for CANH ground short No. 4 CAN junction connector
      O16-22 (CANL) - D28-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Inspection for CANL ground short
      O16-8 (CANH) - D28-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Inspection for CANH ground short Rear television camera assembly*1
      O16-19 (CANL) - D28-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Inspection for CANL ground short
      O16-9 (CANH) - D28-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Inspection for CANH +B short No. 2 CAN junction terminal
      O16-20 (CANL) - D28-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Inspection for CANL +B short
      O16-10 (CANH) - D28-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Inspection for CANH +B short Blind spot monitor sensor LH*2
      O16-21 (CANL) - D28-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Inspection for CANL +B short
      O16-11 (CANH) - D28-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Inspection for CANH +B short No. 4 CAN junction connector
      O16-22 (CANL) - D28-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Inspection for CANL +B short
      • *1: w/ Parking Assist Monitor System
      • *2: w/ Blind Spot Monitor System

      Result

      Result Proceed to
      OK A
      NG (to No. 4 CAN junction connector main bus line) B
      NG (to No. 2 CAN junction terminal main bus line) C
      NG (to ECU branch lines) D

      HINT: 

      • It is only necessary to perform the inspection in the above table for the result (short circuit) that was obtained in the Check Sub Bus 11 inspection.
      • Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check Sub Bus 11 inspection.

    Result: 

    A 

    REPLACE NO. 5 CAN JUNCTION CONNECTOR 

    Result: 

    B 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 4 CAN JUNCTION CONNECTOR - NO. 5 CAN JUNCTION CONNECTOR) 

    Result: 

    D 

    See step  20

    Result: 

    C 

    See step  19

  19. CHECK FOR SHORT IN CAN BUS LINE (NO. 5 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION TERMINAL) 
    1. Disconnect the O17 No. 2 CAN junction terminal.
    2. Measure the resistance according to the value(s) in the table below.
      GTY569962Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      GTY606437Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition Purpose
      O17-3 (CANH) - D28-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short
      O17-2 (CANL) - D28-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      O17-3 (CANH) - D28-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short
      O17-2 (CANL) - D28-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      TEXT IN ILLUSTRATION

      *1 DLC3
      *a Front view of wire harness connector
      (to No. 2 CAN Junction Terminal)

      HINT: 

      • It is only necessary to perform the inspection in the above table for the result (short circuit) that was obtained in the Check Sub Bus 11 inspection.
      • Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check Sub Bus 11 inspection.

    Result: 

    OK 

    REPLACE NO. 2 CAN JUNCTION TERMINAL 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 5 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION TERMINAL) 

  20. CHECK CAN BUS LINE (ECUS) 
    1. Reconnect all wire harness connectors (No. 4 CAN junction connector and No. 5 CAN junction connector).
    2. Disconnect the connector that includes terminals CANH and CANL from the ECU to which the bus line shorted to +B or shorted to GND is connected (Refer to TERMINALS OF ECU [10/2014 - 10/2015] ).
    3. Measure the resistance according to the value(s) in the table below.
      GTY593092Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition Purpose
      D104-34 (CA2H) - D104-6 (E1) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short
      D104-35 (CA2L) - D104-6 (E1) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      D104-34 (CA2H) - D104-1 (AM22) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short
      D104-35 (CA2L) - D104-1 (AM22) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (Power Management Control ECU)

      HINT: 

      • It is only necessary to perform the inspection in the above table for the result (short circuit) that was obtained in the Check Sub Bus 11 inspection.
      • If the resistance becomes abnormal when an ECU connector is reconnected, there may be a short in the ECU.

    Result: 

    OK 

    REPLACE CORRESPONDING ECU OR SENSOR 

    Result: 

    NG 

    REPAIR OR REPLACE CORRESPONDING ECU OR SENSOR BRANCH LINE OR CONNECTOR 

  21. CHECK FOR SHORT IN SUB BUS LINE (NO. 4 CAN JUNCTION CONNECTOR - POWER MANAGEMENT CONTROL ECU) 
    1. Disconnect the D104 power management control ECU connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY571121Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition Purpose
      D104-34 (CA2H) - D104-6 (E1) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Below 200 Ω:
      CANH ground short
      D104-35 (CA2L) - D104-6 (E1) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher Below 200 Ω:
      CANL ground short
      D104-34 (CA2H) - D104-1 (AM22) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Below 6 kΩ:
      CANH +B short
      D104-35 (CA2L) - D104-1 (AM22) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Below 6 kΩ:
      CANL +B short
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Power management Control ECU)

      HINT: 

      • It is only necessary to perform the inspection in the above table for the result (short circuit) that was obtained in the Check Sub Bus 11 inspection.
      • Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check Sub Bus 11 inspection.

    Result: 

    OK 

    REPLACE POWER MANAGEMENT CONTROL ECU 

    (Refer to REMOVAL [10/2014 - 10/2015] )

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 4 CAN JUNCTION CONNECTOR - POWER MANAGEMENT CONTROL ECU) 

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