Paddle Shifter - (Downshift Switch) Circuit Troubleshooting

SRS components are located in this area. Review the SRS component locations (see COMPONENT LOCATION INDEX ) and the precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repair or service.

1. Remove the steering wheel (see STEERING WHEEL REMOVAL ).
2. Check for continuity between cable reel subharness 20P connector terminals No. 17 and No. 8 when pressing and releasing the paddle shifter - (downshift switch).
   Fig 1: Checking Continuity Between Cable Reel Subharness 20P Connector Terminals No. 17 And No. 8

   Courtesy of AMERICAN HONDA MOTOR CO., INC.

   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 and releasing the paddle shifter - (downshift switch).
   Fig 2: Checking Continuity Between Paddle Shifter - Connector Terminals No. 3 And No. 4

   Courtesy of AMERICAN HONDA MOTOR CO., INC.

   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) (see PADDLE SHIFTER REPLACEMENT  )).

5. Remove the cable reel (see CABLE REEL REPLACEMENT ).
6. Check for continuity between cable reel 20P connector terminal No. 5 and body ground.
   Fig 3: Checking Continuity Between Cable Reel 20P Connector Terminal No. 5 And Body Ground

   Courtesy of AMERICAN HONDA MOTOR CO., INC.

   Is there continuity? 

   YES  - Go to step 7.

   NO  - Repair an open in the wire between cable reel 20P connector terminal No. 5 and body ground (G401) (see CONNECTOR TO FUSE/RELAY BOX INDEX ), or repair poor body ground (G401).

7. Check for continuity between cable reel 20P connector terminal No. 17 and body ground.
   Fig 4: Checking Continuity Between Cable Reel 20P Connector Terminal No. 17 And Body Ground

   Courtesy of AMERICAN HONDA MOTOR CO., INC.

   Is there continuity? 

   YES  - Repair a 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.
9. Measure the voltage between cable reel 20P connector terminals No. 5 and No. 17.
   Fig 5: Measuring Voltage Between Cable Reel 20P Connector Terminals No. 5 And No. 17

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   Is there battery voltage? 

   YES  - Replace the cable reel (see CABLE REEL REPLACEMENT ).

   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.
    Fig 6: Identifying Cable Reel 20P Connector Terminal No. 17 Connection With Body Ground Using Jumper Wire

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14. Check for continuity between PCM connector terminal A37 and body ground.
    Fig 7: Checking Continuity Between PCM Connector Terminal A37 And Body Ground

    Courtesy of AMERICAN HONDA MOTOR CO., INC.

    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 (see SUBSTITUTING THE ECM/PCM ) and recheck.

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