Circuit/System Testing
WARNING: This page is about a different variant/trim than selected.
- Observe the DTCs with the scan tool.
- If DTC P0602 is set, attempt to program the ECM before replacing the ECM.
- If DTC P0602 resets, replace the ECM.
- Test the voltage and ground circuits to the control module for the following:
- A short
- An open
- High resistance
- If all circuits test OK, replace the ECM.