Connect the EGR valve 6P connector terminal No. 4 and body ground with a jumper wire. EGR VALVE 6P CONNECTOR Wire side of female terminals Check for continuity between ECM/PCM connector terminal B14 and the body ground. ECM/PCM CONNECTOR B (24P) Wire side of female terminals Is there continuity? YES - Go to step 30. NO - Repair open in the wire between the EGR valve and the ECM/PCM (B14).

Disconnect the jumper wire from the EGR valve 6P connector. Connect the EGR valve 6P connector terminal No. 6 to body ground with a jumper wire. EGR VALVE 6P CONNECTOR Wire side of female terminals Is there continuity? YES - Substitute a known-good ECM/PCM and recheck (see page 11-6). If symptom/indication goes away, replace the original ECM/PCM. NO - Repair open in the wire between the EGR valve and G101.