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DTC P1400: EGRC Solenoid: Procedure

  1. Disconnect EGRC solenoid harness connector. See Figure. Turn ignition on. Measure voltage between ground and EGRC solenoid harness connector terminal No. 1 (Black wire). If battery voltage exists, go to next step. If battery voltage does not exist, repair open or short circuit and retest system. See WIRING DIAGRAMS article.
  2. Turn ignition off. Disconnect ECM harness connector. See Figure. Check continuity between EGRC solenoid harness connector terminal No. 2 (Yellow/Black wire) and ECM harness connector terminal No. 10 (Blue/Yellow wire). See Figure. Also, check circuit for short to ground and short to voltage. Repair circuit as necessary and retest system. If circuit is okay, go to next step.
  3. Remove EGRC solenoid. Using jumper wires, apply battery voltage between EGRC solenoid terminals. See Figure. Air should flow between ports "A" and "B". Air should not flow between ports "A" and "C". Remove jumper wires. Air should not flow between ports "A" and "B". Air should flow between ports "A" and "C". EGRC solenoid should switch in one second or less. If operation is as specified, go to next step. If operation is not as specified, replace EGRC solenoid and retest system.
  4. No problem is indicated at this time. Problem may be intermittent. See INTERMITTENTS in TROUBLE SHOOTING - NO CODES article.
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