Start Signal System Test
- Turn ignition switch to START position. Measure voltage between ground and PCM harness connector terminal No. 20. See START CIRCUIT WIRE COLOR & PCM TERMINAL IDENTIFICATION table for wire color. See Figure or Figure
. Battery voltage should be present in START position ONLY. Zero volts should be present in any other ignition switch position.
- If voltage is not as specified, check appropriate fuse in fuse block. If fuse is okay, repair circuit between PCM and fuse block. If voltage is as specified, check PCM terminals, harness, and connector terminals for damage or corrosion. Repair as necessary.
START CIRCUIT WIRE COLOR & PCM TERMINAL IDENTIFICATION
| Application |
Wire Color |
| Altima |
Black/Yellow |
| Maxima |
Brown/White |
| Pathfinder & QX4 |
Black/Yellow |
| Frontier |
Blue/Orange |
| Quest |
Blue/Black |
| Sentra & 200SX |
Black/Yellow |
| 240SX |
Orange |