Check Bus 5 Line for Short to GND [06/2018 - 07/2019]: Procedure
- CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 1 JUNCTION CONNECTOR)
- Disconnect the cable from the negative (-) battery terminal.
- Disconnect the N97 No. 1 junction connector.
- Measure the resistance according to the value(s) in the table below.
*1 DLC3 - - *a Front view of wire harness connector
(to No. 1 Junction Connector)*b to Central Gateway ECU (Network Gateway ECU) *c to Headlight ECU Sub-assembly RH *d to Outer Mirror Control ECU Assembly RH
(w/ Seat Position Memory System)*e to No. 8 CAN Junction Connector - - Standard Resistance
Tester Connection Condition Specified Condition Connected to N97-8 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Central gateway ECU (network gateway ECU) N97-19 (CANL) - G57-4 (CG) N97-9 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Headlight ECU sub-assembly RH N97-20 (CANL) - G57-4 (CG) N97-10 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Outer mirror control ECU assembly RH* N97-21 (CANL) - G57-4 (CG) N97-11 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher No. 8 CAN junction connector N97-22 (CANL) - G57-4 (CG) - *: w/ Seat Position Memory System
Result
Result Proceed to OK A NG (Line to central gateway ECU (network gateway ECU)) B NG (Line to No. 8 CAN junction connector) C NG (Line to ECU or sensor) D
Result:
A
REPLACE NO. 1 JUNCTION CONNECTOR
Result:
C
See step 3
Result:
D
See step 5
Result:
B
See step 2
- CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 1 JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))
- Disconnect the G66 central gateway ECU (network gateway ECU) connector.
- Measure the resistance according to the value(s) in the table below.
*1 DLC3 - - *a Front view of wire harness connector
(to No. 1 Junction Connector)*b to Central Gateway ECU (Network Gateway ECU) Standard Resistance
Tester Connection Condition Specified Condition N97-8 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher N97-19 (CANL) - G57-4 (CG) Result
Result OK NG
Result:
OK
REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU). Refer to REMOVAL [06/2018 - 08/2021]
Result:
NG
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 1 JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))
- CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 8 CAN JUNCTION CONNECTOR)
- Disconnect the N101 No. 8 CAN junction connector.
- Measure the resistance according to the value(s) in the table below.
*1 DLC3 - - *a Front view of wire harness connector
(to No. 8 CAN Junction Connector)*b to Outer Mirror Control ECU Assembly LH
(w/ Seat Position Memory System)*c to Luggage Closer Motor Assembly
(w/ Power Trunk Lid System)*d to No. 5 CAN Junction Connector *e to No. 1 Junction Connector *f to Position Control ECU Assembly LH
(w/ Seat Position Memory System)Standard Resistance
Tester Connection Condition Specified Condition Connected to N101-1 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Outer mirror control ECU assembly LH*1 N101-7 (CANL) - G57-4 (CG) N101-2 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Luggage closer motor assembly*2 N101-8 (CANL) - G57-4 (CG) N101-3 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher No. 5 CAN junction connector N101-9 (CANL) - G57-4 (CG) N101-4 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher No. 1 junction connector N101-10 (CANL) - G57-4 (CG) N101-5 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Position control ECU assembly LH*1 N101-11 (CANL) - G57-4 (CG) - *1: w/ Seat Position Memory System
- *2: w/ Power Trunk Lid System
Result
Result Proceed to OK A NG (Line to No. 1 junction connector) B NG (Line to No. 5 CAN junction connector) C NG (Line to ECU or sensor) D
Result:
A
REPLACE NO. 8 CAN JUNCTION CONNECTOR
Result:
B
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 8 CAN JUNCTION CONNECTOR - NO. 1 JUNCTION CONNECTOR)
Result:
D
See step 5
Result:
C
See step 4
- CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 5 CAN JUNCTION CONNECTOR)
- Disconnect the G97 No. 5 CAN junction connector.
- Measure the resistance according to the value(s) in the table below.
*1 DLC3 - - *a Front view of wire harness connector
(to No. 5 CAN Junction Connector)*b to Air Conditioning Amplifier Assembly *c to Certification ECU (Smart Key ECU Assembly) *d to Headlight ECU Sub-assembly LH *e to Main Body ECU (Multiplex Network Body ECU) *f to No. 8 CAN Junction Connector *g to Combination Meter Assembly *h to Meter Mirror Sub-assembly
(w/ Headup Display System)*i to Multiplex Tilt and Telescopic ECU
(w/ Power Tilt and Power Telescopic System)- - Standard Resistance
Tester Connection Condition Specified Condition Connected to G97-3 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Air conditioning amplifier assembly G97-14 (CANL) - G57-4 (CG) G97-4 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Certification ECU (smart key ECU assembly) G97-15 (CANL) - G57-4 (CG) G97-5 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Headlight ECU sub-assembly LH G97-16 (CANL) - G57-4 (CG) G97-6 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Main body ECU (multiplex network body ECU) G97-17 (CANL) - G57-4 (CG) G97-7 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher No. 8 CAN junction connector G97-18 (CANL) - G57-4 (CG) G97-8 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Combination meter assembly G97-19 (CANL) - G57-4 (CG) G97-9 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Meter mirror sub-assembly*1 G97-20 (CANL) - G57-4 (CG) G97-10 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Multiplex tilt and telescopic ECU*2 G97-21 (CANL) - G57-4 (CG) - *1: w/ Headup Display System
- *2: w/ Power Tilt and Power Telescopic System
Result
Result Proceed to OK A NG (Line to No. 8 CAN junction connector) B NG (Line to ECU or sensor) C
Result:
A
REPLACE NO. 5 CAN JUNCTION CONNECTOR
Result:
B
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 5 CAN JUNCTION CONNECTOR - NO. 8 CAN JUNCTION CONNECTOR)
Result:
C
See step 5
- CHECK FOR SHORT TO GND IN CAN BUS LINE (ECU OR SENSOR)
- Reconnect all wire harness connectors.
- Disconnect the connector that includes terminals CANH and CANL from the ECU or sensor to which the bus line shorted to GND is connected.
Refer to TERMINALS OF ECU [06/2018 - 07/2019]
- Measure the resistance according to the value(s) in the table below.
*1 DLC3 - - *a Component with harness connected
(Central Gateway ECU (Network Gateway ECU))- - Standard Resistance
Tester Connection Condition Specified Condition G66-15 (CA5H) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher G66-16 (CA5L) - G57-4 (CG) HINT:
- If the resistance changes to 200 Ω or higher 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 when the connector is disconnected from the ECU or sensor, check for a short to ground in the wire harness and repair or replace the wire harness or connector if necessary.
Result
Result OK NG
Result:
OK
REPLACE ECU OR SENSOR
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR