TB2 - Diagnostic Trouble Codes 65, 632 and 653

Diagnostic Trouble Codes (DTC) 632 and 653 indicate the Transmission Control Switch (TCS) was not cycled between engine "ID Code" and the "Goose Test" in Key On Engine Running (KOER) Self-Test.

Possible Causes:
- damaged or switch not cycled during self-test.
- Shorted harness.
- Damaged Powertrain Control Module (PCM).
- Open harness or fuse.

- Was TCS cycled during KOER Self-Test?

Yes -- Go to TB4. TB4 - Cycle the Appropriate Circuit: (4X4 Low or Transmission)

No -- Rerun KOER Self-Test cycling the TCS. Quick Test Appendix (Detailed Testing Instructions)