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 ) in the SRS before doing repair or service.

1. Remove the steering wheel (see STEERING WHEEL REMOVAL ).
2. Check for continuity between steering wheel switch harness 20P connector terminals No. 16 and No. 7 while pressing the paddle shifter - (downshift switch) and when the paddle shifter - is released.
   Fig 1: Checking Continuity Between Steering Wheel Switch Harness 20P Connector Terminals No. 16 And No. 7

   Courtesy of AMERICAN HONDA MOTOR CO., INC.

   Is there continuity while pressing the paddle shifter - (downshift switch) and no continuity when the paddle shifter - 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. 1 and No. 2 while pressing the paddle shifter - and when the paddle shifter - is released.
   Fig 2: Checking Continuity Between Paddle Shifter - (Downshift Switch) Connector Terminals No. 1 And No. 2

   Courtesy of AMERICAN HONDA MOTOR CO., INC.

   Is there continuity while pressing the paddle shifter - (downshift switch) and no continuity when the paddle shifter - is released? 

   YES  -Replace the steering wheel switch harness.

   NO  -Replace the paddle shifter - (downshift switch) (see PADDLE SHIFTER - (DOWNSHIFT SWITCH) REPLACEMENT  ).

5. Remove the cable reel (see CABLE REEL REPLACEMENT ).
6. Check for continuity between cable reel 20P connector terminal No. 15 and body ground.
   Fig 3: Checking Continuity Between Cable Reel 20P Connector Terminal No. 15 And Body Ground

   Courtesy of AMERICAN HONDA MOTOR CO., INC.

   Is there continuity? 

   YES  -Go to step 7.

   NO  -Repair open in the wire between cable reel 20P connector terminal No. 15 and ground (G501), or repair poor ground (G501).

7. Check for continuity between cable reel 20P connector terminal No. 6 and body ground.
   Fig 4: Checking Continuity Between Cable Reel 20P Connector Terminal No. 6 And Body Ground

   Courtesy of AMERICAN HONDA MOTOR CO., INC.

   Is there continuity? 

   YES  -Repair short to body ground in the wire between cable reel 20P connector terminal No. 6 and PCM connector terminal D15.

   NO  -Go to step 8.

8. Turn the ignition switch to ON (II), and shift to M.
9. Measure the voltage between cable reel 20P connector terminals No. 6 and No. 15.
   Fig 5: Measuring Voltage Between Cable Reel 20P Connector Terminals No. 6 And No. 15

   Courtesy of AMERICAN HONDA MOTOR CO., INC.

   Is there battery voltage? 

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

   NO  -Go to step 10.

10. Measure the voltage between PCM connector terminal D15 and body ground.
    Fig 6: Measuring Voltage Between PCM Connector Terminal D15 And Body Ground

    Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    YES  -Repair open in the wire between PCM connector terminal D15 and the 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 (see SUBSTITUTING THE PCM  ) and recheck.