Pinout Values and Diagnostic Parameters

INSPECTION OF TCM AND ITS CIRCUITS





TCM and its circuits can be checked at TCM wiring couplers by measuring voltage and resistance.

CAUTION: TCM cannot be checked by itself. It is strictly prohibited to connect voltmeter or ohmmeter to TCM with coupler disconnected from it.

Voltage Check
1. Remove TCM from vehicle body, if necessary.
2. Check voltage at each terminal of couplers connected.

NOTE: As each terminal voltage is affected by the battery voltage, confirm that it is 11 V or more when ignition switch is ON.





Connector E25 and E26 - View





E25 Terminal 1 - 5





E25 Terminal 6 - 28





E26 Terminal 1 - 20

Resistance Check





1. Disconnect TCM couplers from TCM with ignition switch OFF.

CAUTION: Never touch terminals of TCM itself or connect voltmeter or ohmmeter.

2. Check resistance between each terminal of couplers disconnected

CAUTION:
- Be sure to connect ohmmeter probe from wire harness side of coupler.
- Be sure to turn OFF ignition switch for this check.
- Resistance in table below represents that when parts temperature is 20° C (68° F).





Table