Paddle Shifter + (Upshift Switch) Circuit Troubleshooting

Paddle Shifter + (Upshift Switch) Circuit Troubleshooting

SRS components are located in this area. Review the SRS component locations and the precautions and procedures in the SRS before doing repair or service.

1. Remove the steering wheel.
2. Check for continuity between the steering switch harness 20P connector terminals No. 16 and No. 8 while pressing paddle shifter (upshift switch) and when the paddle shifter + is released.





Is there continuity while pressing the paddle shifter + and no continuity when the paddle shifter + is released?

YES - Go to step 5.

NO - Go to step 3.

3. Disconnect the paddle shifter + (upshift switch) connector.
4. Check for continuity between paddle shifter + (upshift switch) connector terminals while pressing the paddle shifter + and when the paddle shifter + is released.





Is there continuity while pressing the paddle shifter + and no continuity when the paddle shifter + is released?

YES - Replace the steering switch harness.

NO - Replace the paddle shifter +.

5. Remove the cable reel.
6. Check for continuity cable reel 20P connector terminal No. 5 and body ground.





Is there continuity?

YES - Go to step 7.

NO - Repair open in the wire between the cable reel 20P connector terminal No. 5 and ground (G502), or repair poor ground (G502).
7. Check for continuity between the cable reel 20P connector terminal No. 16 and body ground.





Is there continuity?

YES - Repair short in the wire between the cable reel 20P connector terminal No. 16 and PCM connector terminal B16.

NO - Go to step 8.

8. Turn the ignition switch to ON (II), and shift to S.
9. Measure the voltage between the cable reel 20P connector terminal No. 5 and No. 16.





Is there battery voltage?

YES - Replace the cable reel.

NO - Go to step 10.

10. Turn the ignition switch to LOCK (0).
11. Jump the SCS line with the HDS.
12. Disconnect PCM connector B (44P).
13. Check for continuity between the PCM connector terminal B16 and cable reel 20P connector terminal No. 16.





Is there continuity?

YES - Check for loose or poor connections at the PCM connector terminal B16. If the connection is OK, substitute a known-good PCM and recheck.

NO - Repair open in the wire between the PCM connector terminal B16 and the cable reel 20P connector.