Rear Mode Control Motor Circuit Troubleshooting
- Check the No. 3 (7.5 A) fuse in the driver's under-dash fuse/relay box.
Is the fuse OK?
YES - Go to step 2.
NO - Replace the fuse and recheck.
- Disconnect the rear mode control motor 7P connector.
- Turn the ignition switch ON (II).
- Measure the voltage between the No. 2 terminal of the rear mode control motor 7P connector and body ground.Fig 1: Measuring Voltage Between No. 2 Terminal Of Rear Mode Control Motor 7P Connector And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there battery voltage?
YES - Go to step 5.
NO - Repair open in the wire between the No. 3 fuse in the driver's under-dash fuse/relay box and the rear mode control motor.
- Turn the ignition switch OFF.
- Disconnect rear heater-A/C control switch connectors A (7P) and B (10P).
- Check for continuity between the No. 1 terminal of the rear mode control motor 7P connector and body ground.Fig 2: Checking Continuity Between No. 1 Terminal Of Rear Mode Control Motor 7P Connector And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES - Go to step 8.
NO - Check for an open in the wire between the rear mode control motor and body ground. If the wire is OK, check for ground at G501.
- Check for continuity between the No. 7 terminal of the rear heater-A/C control switch connector B (10P) and body ground.Fig 3: Checking Continuity Between No. 7 Terminal Of Rear Heater-A/C Control Switch Connector B (10P) And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES - Go to step 9.
NO - Check for an open in the wire between the rear heater-A/C control switch connector and body ground. If the wire is OK, check for ground at G501.
- Test the rear mode control motor (see
REAR MODE CONTROL MOTOR TEST
).
Is the rear mode control motor OK?
YES - Go to step 10.
NO - Replace the rear mode control motor (see REAR MODE CONTROL MOTOR REPLACEMENT ).
- Check for continuity between body ground and rear heater-A/C control switch connector B (10P) terminals No. 1, 2, 3, 4, 5 and 6 individually.Fig 4: Checking Continuity Between Body Ground And Rear Heater-A/C Control Switch Connector B (10P) Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES - Repair any short to body ground in the wire(s) between the rear heater-A/C control switch and the mode control motor.
NO - Go to step 11.
- Turn the ignition switch ON (II), and check the same terminals for voltage.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there any voltage?
YES - Repair any short to power in the wire(s) between the rear heater-A/C control switch and the mode control motor. This short may also damage the rear heater-A/C control switch. Repair the short to power before replacing the rear heater-A/C control switch.
NO - Go to step 12.
- Turn the ignition switch OFF.
- Check for continuity between the following terminals of rear heater-A/C control switch connector B (10P) and the rear mode control motor 7P connector.
10P: 7P:
No. 1 No. 7
No. 2 No. 7
No. 3 No. 7
No. 4 No. 4
No. 5 No. 3
No. 6 No. 3
Fig 6: Checking Continuity Between Terminals Of Rear Heater-A/C Control Switch Connector B (10P) And Rear Mode Control Motor 7P ConnectorCourtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES - Check for loose wires or poor connections at rear heater-A/C control switch connector B (10P) and at the rear mode control motor 7P connector. If the connections are good, substitute a known-good rear heater-A/C control switch, and recheck. If the symptom/indication goes away, replace the original rear heater-A/C control switch.
NO - Repair any open in the wire(s) between the rear heater-A/C control switch and rear mode control motor.