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### ELECTRONIC CONTROLLED AUTOMATIC TRANSMISSION SYSTEM > TCM Power Source Circuit

## for Preparation Click here

## DESCRIPTION

## WIRING DIAGRAM

When the ignition switch is turned ON, battery voltage is applied to terminal IG2 of the TCM.

1.CHECK TCM (IG2 VOLTAGE)

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)

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)

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

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)