Nissan Sentra Service Manual: Tcm branch line circuit

Nissan Sentra Service Manual / Electrical & power control / Lan system / Can system (type 3) / Tcm branch line circuit

Diagnosis Procedure

1.Check connector

Turn the ignition switch off.
Disconnect the battery cable from the negative terminal.
Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side).

TCM
Harness connector f50
Harness connector E64

Is the inspection result normal? YES >> GO TO 2.

NO >> Repair the terminal and connector.

2.Check harness for open circuit

Disconnect the connector of tcm.
Check the resistance between the TCM harness connector terminals.

Is the measurement value within the specification?

Is the measurement value within the specification? Yes >> go to 3.

No >> repair the tcm branch line.

3.Check power supply and ground circuit

Check the power supply and the ground circuit of the tcm. Refer to tm-234, "diagnosis procedure".

Is the inspection result normal? Yes (present error)>>replace the tcm. Refer to the tm-263, "removal and installation".

Yes (past error)>>error was detected in the tcm branch line.

No >> repair the power supply and the ground circuit.

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