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.
- If using CONSULT-II, go to next step. If not using CONSULT-II, go to step 3 .
- Turn ignition off then on. Select VENT CONTROL/V in ACTIVE TEST mode with CONSULT-II. Press ON/OFF. EVAP-CVCV should click. For location, see Figure . If EVAP-CVCV clicks, go to step 7 . If EVAP-CVCV does not click, go to next step.
- Turn ignition off. Disconnect EVAP-CVCV harness connector. See Figure . Turn ignition on. Measure voltage between ground and EVAP-CVCV harness connector terminal No. 1 (Red/Yellow wire). If battery voltage exists, go to step 5 . 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, 16-pin connector M5 terminal No. 2 (Red/Yellow wire). See Fig 1 . Connector M5 is located under left side of instrument panel. See Figure or Figure .
- Check for open or short between EVAP-CVCV and fuse.
Repair as necessary.
- Turn ignition off. Disconnect ECM harness connector. See Figure . Check continuity of Orange/Blue wire between EVAP-CVCV harness connector terminal No. 2 and ECM harness connector terminal No. 105. See Figure . Also, check circuit for short to ground and short to voltage. If problem is found, go to next step. If problem is not found, go to step 7 .
- Check the following:
- Check for poor connection at White, 18-pin connector M6 terminal No. 9 (Orange/Blue wire). See Figure . Connector M6 is located under left side of instrument panel. See Figure or Figure .
- Check for poor connection at White, 20-pin connector M81 terminal No. 6 (Orange/Blue wire). See Figure . Connector M81 is located near ECM. See Figure or Figure .
- Check for open or short between EVAP-CVCV and ECM.
Repair as necessary.
- Disconnect hose from EVAP-CVCV. Check hose for blockage. If blockage is found, clean with compressed air. If blockage is not found, go to next step.
- Remove EVAP-CVCV. Check for rust in port "B". See Figure . If rust exists, replace EVAP-CVCV. If rust does not exist, go to next step.
- If using CONSULT-II, go to next step. If using generic scan tool, go to step 11 .
- Reconnect all harness connectors. Turn ignition on. Perform VENT CONTROL/V in ACTIVE TEST mode with CONSULT-II. When VENT CONTROL/V is ON, air should not flow between ports "A" and "B". When VENT CONTROL/V is OFF, air should flow between ports "A" and "B". It should take less than one second for valve to open or close. If operation is as specified, go to step 12 . If operation is not as specified, clean EVAP-CVCV with compressed air, and retest. If operation is still not as specified, replace EVAP-CVCV.
- Using jumper wires, apply battery voltage to EVAP-CVCV terminals. See Figure . Air should not flow between ports "A" and "B". Remove jumper wires. Air should flow. EVAP-CVCV should switch in less than one second. If operation is as specified, go to next step. If operation is not as specified, clean EVAP-CVCV with compressed air, and retest. If operation is still not as specified, replace EVAP-CVCV.
- No problem is indicated at this time. Problem may be intermittent. See INTERMITTENTS in TROUBLE SHOOTING - NO CODES article.