Diagnostic Procedure
WARNING: This page is about a different car, the 2002 Nissan Maxima and 2002 Infiniti I35. However, it is still accessible from the selected car via links, so may be relevant.
- Turn ignition off. Disconnect VIAS control solenoid valve harness connector. See Fig 1 . Turn ignition on. Measure voltage between ground and VIAS control solenoid valve harness connector terminal No. 1 (Red/Yellow wire). If battery voltage exists, go to step 3 . If battery voltage does not exist, go to next step.
- Check the following:
- Check fuse No. 20 (15-amp) located in fuse block under left side of instrument panel.
- Check for poor connection at fuse block connector M19 terminal 11L (Red/Yellow wire). See Figure .
- Check for poor connection at White, 18-pin harness connector F66 (on I35) or F68 (on Maxima) terminal No. 14 (Red/Yellow wire). See Figure . Connector is located under instrument panel. See Figure or Figure .
- Check for open or short between VIAS control solenoid valve and fuse.
Repair as necessary.
- Turn ignition off. Disconnect ECM harness connector. See Figure . Check continuity of Yellow/Green wire between VIAS control solenoid valve harness connector terminal No. 2 and ECM harness connector terminal No. 27. See Figure . Also, check circuit for short to ground and short to voltage. If problem is found, repair as necessary. If problem is not found, go to next step.
- If using CONSULT-II, go to next step. If not using CONSULT-II, go to step 6 .
- Reconnect all harness connectors. Turn ignition on. Perform VIAS SOL VALVE in ACTIVE TEST mode with CONSULT-II. When VIAS SOL VALVE is ON, air should flow between ports "A" and "B", and air should not flow between ports "A" and "C". See Fig 2 . When VIAS SOL VALVE is OFF, air should not flow between ports "A" and "B", and air should flow between ports "A" and "C". It should take less than one second for valve to switch. If operating is as specified, go to step 7 . If operation is not as specified, replace VIAS control solenoid valve.
- Using jumper wires, apply battery voltage between VIAS control solenoid valve terminals. See Fig 2 . Air should flow between ports "A" and "B", and air should not flow between ports "A" and "C". Remove jumper wires. Air should not flow between ports "A" and "B", and air should flow between ports "A" and "C". It should take less than one second for valve to switch. If operating is as specified, go to next step. If operation is not as specified, replace VIAS control solenoid valve.
- No problem is indicated at this time. Problem may be intermittent. See INTERMITTENTS in TROUBLE SHOOTING - NO CODES article.