Rear MICU

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8. Turn the ignition switch to LOCK (0).
9. Remove rear side panel (see TRIM REMOVAL/INSTALLATION - REAR SIDE AREA ).
10. Disconnect rear fuse box connector B.

Fig 1: Rear Fuse Box Connector B (3GP) Connector Terminals Identification
Courtesy of AMERICAN HONDA MOTOR CO., INC.
11. Inspect the connector and socket terminals to be sure they are all making good contact.
- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
- If the terminals look OK, go to step 12.

12. With the connectors still disconnected, make these input tests at the connectors.

If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, go to step 13.

TEST CONDITION CHART

Cavity	Wire	Test condition	Test: Desired result	Possible cause if result is not obtained
B8	LT GRN	Open the fuel fill door	Measure the voltage to ground: There should be less than 0.2 V.	Poor ground (G602) Faulty fuel fill door switch An open or high resistance in the wire
B8	LT GRN	Close the fuel fill door	Measure the voltage to ground: There should be about 5 V.	Short to ground in the wire Faulty fuel fill door switch

13. If multiple failures are found on more than one control unit, replace the rear fuse box (includes the rear MICU) (see REMOVAL AND INSTALLATION ).
If input failures are related to a particular control unit, replace the control unit (see POWER SLIDING DOOR MOTOR UNIT REPLACEMENT ).