ELECTRONIC CONTROLLED AUTOMATIC TRANSMISSION SYSTEM > TCM Power Source Circuit

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DESCRIPTION


A111769E01


WIRING DIAGRAM

When the ignition switch is turned ON, battery voltage is applied to terminal IG2 of the TCM.
1.CHECK TCM (IG2 VOLTAGE)
G039243E01

  1. Turn the ignition switch ON.

  1. Measure the voltage of the TCM connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    T17-6 (IG2) - T19-1 (E1)
    		9 to 14 V



OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
NG


2.CHECK WIRE HARNESS (TCM - BODY GROUND)


    F045523E08

  1. Disconnect the T19 TCM connector.

  1. Measure the resistance of the wire harness side connector.

    Standard resistance:
    Tester Connection
    		Specified Condition
    T19-1 (E1)- Body ground
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


3.INSPECT FUSE (IGN)
A111770E01

  1. Remove the IGN fuse from the instrument panel junction block.

  1. Measure the resistance of the fuse.

    Standard resistance:
    Below 1 Ω



NG
REPLACE FUSE
OK


4.INSPECT IGNITION SWITCH


    A056879E04

  1. Disconnect the I6 ignition switch connector.

  1. Measure the resistance of the ignition switch.

    Standard resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    5 (AM2) - 6 (IG2)
    		LOCK
    		10 kΩ or higher
    5 (AM2) - 6 (IG2)
    		ON
    		Below 1 Ω



NG
REPLACE IGNITION SWITCH
OK

REPAIR OR REPLACE HARNESS AND CONNECTOR (BATTERY - IGNITION SWITCH, IGNITION SWITCH - TCM)