| 1. | Remove the steering wheel. |
| 2. | Check for continuity between steering switch harness 20P connector terminals No. 7 and No. 16 while pressing steering wheel upshift (+) switch and when the switch is released.
Is there continuity while pressing steering wheel upshift (+) switch and no continuity when the switch released? YES - Go to 5. NO - Go to 3. |
| 3. | Disconnect the steering wheel upshift (+) switch connector. |
| 4. | Check for continuity between steering wheel upshift (+) switch connector terminals while pressing the switch and when the switch is released.
Is there continuity while pressing the switch and no continuity when the switch released? YES - Replace the steering switch harness.n NO - Replace the steering wheel upshift (+) switch. |
| 5. | Remove the cable reel. |
| 6. | Check for continuity cable reel 20P connector terminal No. 7 and body ground.
Is there continuity? YES - Go to 7. NO - Repair open in the wire between cable reel 20P connector terminal No. 7 and ground (G101), or repair poor ground (G101).n |
| 7. | Check for continuity between cable reel 20P connector terminal No. 16 and body ground.
Is there continuity? YES - Repair short to ground in the wire between cable reel 20P connector terminal No. 16 and PCM connector terminal B16.n NO - Go to 8. |
| 8. | Turn the ignition switch ON (II), and shift to the S position. |
| 9. | Measure voltage between cable reel 20P connector terminal No. 7 and No. 16.
Is there about 5 V in neutral position and no voltage while pressing steering wheel upshift (+) switch? YES - Replace the cable reel.n NO - Go to 10. |
| 10. | Turn the ignition switch OFF. |
| 11. | Jump the SCS line with the HDS. |
| 12. | Disconnect PCM connector B (44P). |
| 13. | Check for continuity between PCM connector terminal B16 and cable reel 20P connector terminal No. 16.
Is there continuity? YES - Check for loose or poor connections at PCM connector terminal B16. If the connection is OK, substitute a known-good PCM and recheck.n NO - Repair open in the wire between PCM connector terminal B16 and cable reel 20P connector.n |