Paddle Shifter - (Downshift Switch) Circuit Troubleshooting

Paddle Shifter - (Downshift Switch) Circuit Troubleshooting

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

1. Remove the steering wheel. Steering Wheel Removal

2. Check for continuity between steering switch harness 20P connector terminals No. 7 and No. 16 while pressing paddle shifter - (downshift switch), and when the paddle shifter - is released.

Is there continuity while pressing the paddle shifter - (downshift switch), and no continuity when the paddle shifter - is released?
YES - Go to step 3.

NO - Go to step 9.






3. Remove the cable reel. Service and Repair

4. Check for continuity cable reel 20P connector terminal No. 15 and body ground.

Is there continuity?
YES - Go to step 5.

NO - Repair open in the wire between cable reel 20P connector terminal No. 15 and ground (G503), or repair poor ground (G503).






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

Is there continuity?
YES - Repair short in the wire between cable reel 20P connector terminal No. 6 and PCM connector terminal D15.

NO - Go to step 6.






6. Turn the ignition switch to ON (II), and shift to S.

7. Measure the voltage between cable reel 20P connector terminals No. 6 and No. 15.

Is there battery voltage?
YES - Replace the cable reel. Service and Repair

NO - Go to step 8.






8. Measure the voltage between PCM connector terminal D15 and body ground.

Is there battery voltage?
YES - Repair open in the wire between PCM connector terminal D15 and cable reel 20P connector.

NO - Check for loose or poor connections at PCM connector terminal D15. If the connection is OK, substitute a known-good PCM How to Troubleshoot A/T Systems and recheck.






9. Disconnect the paddle shifter - (downshift switch) connector.

10. Check for continuity between paddle shifter - (downshift switch) connector terminals No. 3 and No. 4 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. Overhaul

NO - Replace the paddle shifter - (downshift switch). Paddle Shifter - (Downshift Switch) Replacement