Transmission Control ECU Communication Stop Mode [06/2016 - ]: Procedure
- CHECK FOR OPEN IN CAN BUS LINES (TCM BRANCH LINE)
- Disconnect the cable from the negative (-) battery terminal.
- Disconnect the A18 TCM connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition A18-29 (CANH) - A18-28 (CANL) Cable disconnected from negative (-) battery terminal 57 to 63 Ω TEXT IN ILLUSTRATION*a Front view of wire harness connector
(to TCM)
Result:
NG
REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (TCM)
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 A18-3 (E02) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω A18-33 (E01) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω TEXT IN ILLUSTRATION*a Front view of wire harness connector
(to TCM) - Connect the cable to the negative (-) battery terminal.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition A18-26 (BM) - Body ground Ignition switch off 11 to 14 V A18-34 (IG1) - Body ground Ignition switch ON 11 to 14 V A18-35 (IG2) - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION*a Front view of wire harness connector
(to TCM)
Result:
OK
REPLACE TCM
(Refer to REMOVAL [06/2016 - ] )
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
- Measure the resistance according to the value(s) in the table below.