Keyless Access Control Unit Input Test/Replacement

Turn the ignition switch to LOCK (0).
Remove the driver's dashboard undercover (see DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION ), and the driver's dashboard lower cover (see DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION ).
Disconnect the connectors (A) from the keyless access control unit (B).
NOTE: All connector views are wire side of female terminals.

Fig 1: Disconnecting Connectors From Keyless Access Control Unit
Courtesy of AMERICAN HONDA MOTOR CO., INC.
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 5.

With the connectors still disconnected, do the following input tests.

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 6.

TEST CONDITION AND WIRE REFERENCE CHART

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
A5	RED	Ignition switch ON (M)	Attach to ground: The immobilizer indicator should come on.	Faulty gauge control module An open or high resistance in the wire
A31	GRN	Ignition switch ON (M)	Attach to ground: The keyless access indicator should come on.	Faulty gauge control module An open or high resistance in the wire

Reconnect the connectors to the keyless access control unit, and do the following input tests.

If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, the control unit must be faulty; replace it.

TEST CONDITION AND WIRE REFERENCE CHART

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
A9	BLK	In all ignition switch positions	Measure the voltage to ground: There should be less than 0.2 V.	Poor ground(G501) An open or high resistance in the ground wire
A21	BLK	In all ignition switch positions	Measure the voltage to ground: There should be less than 0.2 V.	Poor ground(G501) An open or high resistance in the ground wire
A1	YEL	Ignition switch ON (II)	Measure the voltage to ground: There should be battery voltage.	Blown No. 19 (20 A) fuse in the driver's under-dash fuse/relay box An open or high resistance in the wire
A2	PUR	Ignition switch ACC (I)	Measure the voltage to ground: There should be battery voltage.	Blown No. 32 (10 A) fuse in the driver's under-dash fuse/relay box An open or high resistance in the wire
A10	WHT	Under all conditions	Measure the voltage to ground: There should be battery voltage.	Blown No. 15 (40 A) fuse in the under-hood fuse/relay box Blown No. 6 (7.5 A) fuse in the driver's under-dash fuse/relay box An open or high resistance in the wire
A22	WHT	Under all conditions	Measure the voltage to ground: There should be battery voltage.	Blown No. 15 (40 A) fuse in the under-hood fuse/relay box Blown No. 7 (10 A) fuse in the driver's under-dash fuse/relay box An open or high resistance in the wire
A14	ORN	Parking brake pedal pressed	Measure the voltage to ground: There should be less than 0.2 V.	Faulty parking brake switch An open or high resistance in the wire
A14	ORN	Parking brake pedal released	Measure the voltage to ground: There should be battery voltage.	Faulty parking brake switch A short to ground in the wire
B1	LT BLU	Trunk lid outer handle switch pulled	Measure the voltage to ground: There should be less than 0.2 V.	Poor ground (G652) or an open in the ground wire Faulty trunk lid outer handle switch An open or high resistance in the wire
B1	LT BLU	Trunk lid outer handle switch released	Measure the voltage to ground: There should be at least 5 V.	Faulty trunk lid outer handle switch A short to ground in the wire