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 before doing repair or service.

1. Remove the steering wheel. Steering Wheel Removal

2. Check for continuity between cable reel subharness 20P connector terminals No. 17 and No. 8 when pressing the paddle shifter - (downshift switch) and when the paddle shifter - (downshift switch) is released.

Is there continuity when pressing the paddle shifter - (downshift switch) and no continuity when the paddle shifter - (downshift switch) is released?
YES - Go to step 5.

NO - Go to step 3.






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

4. Check for continuity between paddle shifter - (downshift switch) connector terminals No. 3 and No. 4 when pressing the paddle shifter - (downshift switch) and when the paddle shifter - (downshift switch) is released.

Is there continuity when pressing the paddle shifter - (downshift switch) and no continuity when the paddle shifter - (downshift switch) is released?
YES - Replace the cable reel subharness.

NO - Replace the paddle shifter - (downshift switch).





5. Remove the cable reel. Service and Repair

6. Check for continuity between 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 cable reel 20P connector terminal No. 5 and body ground (G501), or repair poor body ground (G501).






7. Check for continuity between cable reel 20P connector terminal No. 17 and body ground.

Is there continuity?
YES - Repair short to body ground in the wire between cable reel 20P connector terminal No. 17 and PCM connector terminal A37.

NO - Go to step 8.






8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and shift to S.

9. Measure the voltage between cable reel 20P connector terminals No. 5 and No. 17.

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

NO - Go to step 10.






10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

11. Jump the SCS line with the HDS.

12. Disconnect PCM connector A (49P).

13. Connect cable reel 20P connector terminal No. 17 to body ground with a jumper wire.






14. Check for continuity between PCM connector terminal A37 and body ground.

Is there continuity?
YES - Check for loose or poor connections at PCM connector terminal A37. If the connection is OK, substitute a known-good PCM Initial Inspection and Diagnostic Overview and recheck.

NO - Repair open in the wire between PCM connector terminal A37 and the cable reel 20P connector.