Key Interlock System 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. Turn the ignition switch to ACCESSORY (I) The shift lever must be in P
2. Disconnect the steering lock assembly connector
3. Check if the ignition switch can be turned to LOCK (0)

   Can the ignition switch be turned to LOCK (0)? 

   YES  -Go to step 4

   NO  -Replace the ignition key cylinder/steering lock assembly (see CHECK OF LOCK LEVER FORCE )

4. Make sure the ignition switch is turned to LOCK (0)
5. Move the shift lever out of P
6. Check for continuity between steering lock assembly connector terminal No 3 and body ground
   Fig 1: Checking Continuity Between Steering Lock Assembly Connector Terminal No 3 And Body Ground

   Courtesy of AMERICAN HONDA MOTOR CO., INC.

   Is there continuity? 

   YES  -Repair short to body ground in the wire between the key interlock solenoid and the driver's MICU

   NO  -Go to step 7

7. Remove the shift lever assembly (see SHIFT LEVER REMOVAL )
8. Check for continuity between shift lever 6P connector terminal No 1 and body ground
   Fig 2: Checking Continuity Between Shift Lever 6P Connector Terminal No 1 And Body Ground

   Courtesy of AMERICAN HONDA MOTOR CO., INC.

   Is there continuity? 

   YES  -Repair short to body ground in the wire between shift lever 6P connector terminal No 1 and the driver's MICU

   NO  -Go to step 9

9. Shift the shift lever to P
10. Check for continuity between shift lever 6P connector terminals No 1 and No 2 Do not push the shift lever button
    Fig 3: Checking Continuity Between Shift Lever 6P Connector Terminals No 1 And No 2

    Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Replace the park pin switch (see PARK PIN SWITCH REPLACEMENT )

    NO  -Go to step 11

11. Disconnect driver's under-dash fuse/relay box connector F (33P).
12. Turn the ignition switch to ON (II)
13. Measure the voltage between driver's under-dash fuse/relay box connector F (33P) terminal No 4 and body ground
    Fig 4: Measuring Voltage Between Driver's Under-Dash Fuse/Relay Box Connector F (33P) Terminal No 4 And Body Ground

    Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there about 0 V when the shift lever is in P, and is there battery voltage when the shift lever is out of P? 

    YES  -Substitute a known-good driver's under-dash fuse/relay box and recheck

    NO  -Repair open or short to body ground in the wire between PCM connector terminal B14, the transmission range switch, and the driver's under-dash fuse/relay box