Tire Pressure Monitor ECU Communication Stop Mode [12/2022 - ]: Procedure
WARNING: This page is about a different variant/trim than selected.
- CHECK FOR OPEN IN CAN BUS LINES (TIRE PRESSURE WARNING ECU AND RECEIVER BRANCH LINE)
- Disconnect the cable from the negative (-) auxiliary battery terminal.
- Disconnect the R31 tire pressure warning ECU and receiver connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition R31-9 (CANH) - R31-10 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (TIRE PRESSURE WARNING ECU AND RECEIVER)
Result:
OK
See step 2
- CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition R31-12 (GND) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω - Reconnect the cable to the negative (-) auxiliary battery terminal.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition R31-1 (IGR) - Body ground Ignition switch ON 11 to 14 V R31-7 (+B) - Body ground Ignition switch off 11 to 14 V Result
Proceed to OK NG
Result:
OK
REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER
Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
- Measure the resistance according to the value(s) in the table below.