Altima & Sentra (2.5L)
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2002 Nissan Xterra, 2002 Nissan Sentra, 2002 Nissan Quest, 2002 Nissan Pathfinder, and 2002 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
- If CONSULT-II is available, go to next step. If CONSULT-II is not available, go to step 3.
- Using CONSULT-II in DATA MONITOR mode, observe START SIGNAL under following conditions. See CHECKING START SIGNAL (ALTIMA & SENTRA 2.5L) table. If start signal displays as specified, go to step 8. If start signal does not display as specified, go to step 6.CHECKING START SIGNAL (ALTIMA & SENTRA 2.5L)
Condition Start Signal Ignition Switch ON OFF Ignition Switch OFF ON - Backprobing at ECM, measure voltage between ground and ECM terminal No. 41 (Black/Yellow wire) while cranking engine. See Figure. Battery voltage should exist when ignition switch is in START position. Voltage should be zero volts when ignition switch is in any other position except START. If voltage is as specified, go to step 8. If voltage is not as specified, go to next step.
- Turn ignition switch to OFF position, then to START position. If starter motor operates, go to next step. If starter motor does not operate, repair starting system. See appropriate STARTERS article in STARTING & CHARGING SYSTEMS.
- Turn ignition switch off. Check fuse block fuse No. 9 (10-amp). If fuse is okay, go to next step. If fuse is blown, replace and retest system.
- Turn ignition off. Disconnect ECM 116-pin harness connector. For ECM location, see Figure or Figure . Check continuity between ECM harness connector terminal No. 41 (Brown/White wire in Altima; Black/Yellow wire in Sentra) and fuse block through to battery. See Figure and WIRING DIAGRAMS article. Also, check circuit for short to ground or short to voltage. If problem is found, go to next step. If no problem is found, go to step 8.
- For Altima, check following:
- Check for poor, loose, corroded or damaged terminal connections in in-line harness connectors M71 and F59. See WIRING DIAGRAMS article.
- Check for poor, loose, corroded or damaged terminal connections in fuse block harness connectors E30 and M3.
- Check for open or short in Green wire between ignition switch and fuse block.
- Check for open or short in Brown/White wire between ECM and fuse block.
For Sentra, check following:
- Check for poor, loose, corroded or damaged terminal connections in in-line harness connectors M58 and F26. See WIRING DIAGRAMS article.
- Check for poor, loose, corroded or damaged terminal connections in fuse block harness connectors E103 and M2.
- Check for open or short in White/Red wire between ignition switch and fuse block.
- Check for open or short in Black/Yellow wire between ECM and fuse block.
- No problem is indicated at this time. Problem may be intermittent. See INTERMITTENTS in TROUBLE SHOOTING - NO CODES article.