How to Troubleshoot Circuits at the PCM Remove the glove box stops, then open the glove box. Remove the harness connector clamp (A) from its bracket. Loosen the mounting nut (B) on the lower right of the PCM and remove the mounting bolt (C) and nut (D) on the left of the PCM. Lift the PCM up to clear the mounting nut on the lower right of the PCM, then pull out the PCM (E).

Inspect the circuit on the PCM, according to the DTC troubleshooting, with a digital multitester (A) and tapered tip probe (B) as shown. If you cannot get to the wire side of the connector or the wire side is sealed, disconnect the connector and use the tester probe to probe the connectors from the terminal side. Do not force the probe into the connector.