Introduction
Before the Power Train Electronic Control Module (ECM) is replaced, ensure that replacement is necessary. The Power Train ECM is seldom the cause of a diagnostic code. Always check that power is available to the Power Train ECM. Battery voltage is required from connector contacts 1, 39, 46 and 47 to ground connector contacts 13, 23, 26, 57 and 70 of the harness connector J1 for the Power Train ECM.
Procedure
- Move the disconnect switch and the key start switch to the OFF position.
- Remove two screws (6) from connector J1 (4) and connector J2 (5). Disconnect harness (2) from Power Train ECM (1) .
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| Illustration 1 | g03097296 |
Location of Power Train ECM (behind covers) | |
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| Illustration 2 | g03097297 |
Power Train ECM (covers removed) (1) Power Train ECM (2) Harness | |
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| Illustration 3 | g03097316 |
Power Train ECM (3) Bolt (4) ConnectorJ1 (5) ConnectorJ2 | |
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| Illustration 4 | g03097317 |
(6) Screw | |
- Remove four bolts (3) that hold Power Train ECM (1) .
- Remove Power Train ECM (1) .
- Install the new Power Train ECM. Install four bolts (3) .
Note: Make sure that the replacement Power Train ECM is the correct part number.
- Connect harness (2) to the Power Train ECM. Install two screws (6) .
- Move the disconnect switch and the key start switch to the ON position.
- Load the software by flash programming the ECM.
ReferenceFor information on loading the software refer to Troubleshooting, Testing, and Adjusting, "Electronic Control Module (ECM) - Flash Program".