Check Bus 1 Line for Short to +B [10/2022 - ]: Procedure
WARNING: This page is about a different variant/trim than selected.
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 2 CAN JUNCTION CONNECTOR)
- Disconnect the cable from the negative (-) auxiliary battery terminal.
- Disconnect the No. 2 CAN junction connector.
*a Front view of wire harness connector
(to No. 2 CAN Junction Connector)*b to Millimeter Wave Radar Sensor Assembly *c to No. 8 CAN Junction Connector *d to Parking Assist ECU (w/ Panoramic View Monitor System) *e to Forward Recognition Camera *f to Clearance Warning ECU Assembly (w/ Intuitive Parking Assist System) *g to Central Gateway ECU (Network Gateway ECU) *h Front view of DLC3 *i to Inner Rear View Mirror Assembly (w/ Garage Door Opener System (for Digital Inner Mirror Type)) - - - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Connected to G102-2 (CANH) - G114-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Millimeter wave radar sensor assembly G102-12 (CANL) - G114-16 (BAT) G102-3 (CANH) - G114-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher No. 8 CAN junction connector G102-13 (CANL) - G114-16 (BAT) G102-5 (CANH) - G114-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Parking assist ECU*3 G102-15 (CANL) - G114-16 (BAT) G102-6 (CANH) - G114-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Forward recognition camera G102-16 (CANL) - G114-16 (BAT) G102-7 (CANH) - G114-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Clearance warning ECU assembly*2 G102-17 (CANL) - G114-16 (BAT) G102-8 (CANH) - G114-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Central gateway ECU (network gateway ECU) G102-18 (CANL) - G114-16 (BAT) G102-10 (CANH) - G114-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Inner rear view mirror assembly*1 G102-20 (CANL) - G114-16 (BAT) *1: w/ Garage Door Opener System (for Digital Inner Mirror Type)
*2: w/ Intuitive Parking Assist System
*3: w/ Panoramic View Monitor System
Result
Result Proceed to OK A NG (Central gateway ECU [network gateway ECU] CAN main wire) B NG (No. 8 CAN junction connector CAN main wire) C NG (Wire to ECU or sensor) D
Result:
A
REPLACE NO. 2 CAN JUNCTION CONNECTOR
Result:
C
See step 3
Result:
D
See step 4
Result:
B
See step 2
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (CENTRAL GATEWAY ECU [NETWORK GATEWAY ECU] - NO. 2 CAN JUNCTION CONNECTOR)
- Reconnect the G102 No. 2 CAN junction connector.
- Disconnect the central gateway ECU (network gateway ECU) connector.
*a Front view of wire harness connector
(to Central Gateway ECU [Network Gateway ECU])*b Front view of DLC3 - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition G72-23 (CA1H) - G114-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher G72-8 (CA1L) - G114-16 (BAT) Result
Proceed to OK NG
Result:
OK
REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)
Refer to REMOVAL [10/2022 - 10/2023] , or refer to REMOVAL [10/2023 - ]
Result:
NG
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (CENTRAL GATEWAY ECU [NETWORK GATEWAY ECU] - NO. 2 CAN JUNCTION CONNECTOR)
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 8 CAN JUNCTION CONNECTOR)
- Reconnect the G102 No. 2 CAN junction connector.
- Disconnect the No. 8 CAN junction connector.
*a Front view of wire harness connector
(to No. 8 CAN Junction Connector)*b to No. 2 CAN Junction Connector *c to Blind Spot Monitor Sensor LH (w/ Blind Spot Monitor System) *d to Television Camera Assembly (w/ Parking Assist Monitor System) *e to No. 1 CAN Junction Terminal *f Front view of DLC3 - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Connected to N75-1 (CANH) - G114-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher No. 2 CAN junction connector N75-12 (CANL) - G114-16 (BAT) N75-2 (CANH) - G114-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Blind spot monitor sensor LH*1 N75-13 (CANL) - G114-16 (BAT) N75-3 (CANH) - G114-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher Television camera assembly*2 N75-14 (CANL) - G114-16 (BAT) N75-4 (CANH) - G114-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher No. 1 CAN junction terminal N75-15 (CANL) - G114-16 (BAT) *1: w/ Blind Spot Monitor System
*2: w/ Parking Assist Monitor System
Result
Result Proceed to OK A NG (No. 2 CAN junction connector CAN main wire) B NG (Wire to ECU or sensor) C
Result:
A
REPLACE NO. 8 CAN JUNCTION CONNECTOR
Result:
B
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 8 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION CONNECTOR)
Result:
C
See step 4
- CHECK FOR SHORT TO B+ IN CAN BUS WIRE (ECU, 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 +B is connected.
Refer to TERMINALS OF ECU [10/2022 - 10/2023] , or refer to TERMINALS OF ECU [10/2023 - ]
- Measure the resistance according to the value(s) in the table below.
*a Component with harness connected
(Central Gateway ECU [Network Gateway ECU])*b Front view of DLC3 Standard Resistance
Tester Connection Condition Specified Condition G72-23 (CA1H) - G114-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher G72-8 (CA1L) - G114-16 (BAT) HINT:
- If the resistance changes to 6 kΩ 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 +B in the wire harness and repair or replace the wire harness or connector if necessary.
Result
Proceed to OK NG
Result:
OK
REPLACE ECU OR SENSOR
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR