How to Troubleshoot Circuits at the ECM Remove the center console. 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. |