Parking and Back-Up Sensor Control Unit Input Test/Replacement

Remove the right rear side trim panel (see TRIM REMOVAL/INSTALLATION - TRUNK AREA ).
Disconnect the 14P connector (A) from the parking and back-up sensor control unit (B).

Fig 1: Disconnecting 14P Connector From Parking And Back-Up Sensor 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 4.

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

If any test indicates a problem, find and correct the cause, then recheck the system.
If the input test proves 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
7	BLK	In all ignition switch positions	Check for continuity between terminal No. 7 and body ground: There should be less than 0.2 V.	Poor ground (G652) An open or high resistance in the ground wire
6	BRN	Ignition switch ON (II), shift lever in R position	Measure the voltage to body ground: There should be battery voltage.	Poor ground (G101)or an open in the ground wire Blown No. 21 (10 A) fuse in the driver's under-dash fuse/relay box Faulty transmission range switch Faulty driver's under-dash fuse/relay box An open or high resistance in the wire
11	RED	Under all conditions	Connect to battery power: The parking and back-up sensor beeper should sound.	Poor ground (G651)or an open in the ground wire Faulty parking and rear sensor beeper An open or high resistance in the wire
4	RED	Disconnect the right rear corner sensor 2P connector	Check for continuity between terminal No. 4 and right rear corner sensor terminal No. 2: There should be continuity.	An open or high resistance in the wire
4	RED	Disconnect the right rear corner sensor 2P connector	Check for continuity between terminal No. 4 and body ground: There should be no continuity.	A short to ground in the wire
5	PUR	Disconnect the left rear corner sensor 2P connector	Check for continuity between terminal No. 5 and left rear corner sensor terminal No. 2: There should be continuity.	An open or high resistance in the wire
5	PUR	Disconnect the left rear corner sensor 2P connector	Check for continuity between terminal No. 5 and body ground: There should be no continuity.	A short to ground in the wire
12	PNK	Disconnect the right rear center sensor 2P connector	Check for continuity between terminal No. 12 and right rear center sensor terminal No. 2: There should be continuity.	An open or high resistance in the wire
12	PNK	Disconnect the right rear center sensor 2P connector	Check for continuity between terminal No. 12 and body ground: There should be no continuity.	A short to ground in the wire
13	LT BLU	Disconnect the left rear center sensor 2P connector	Check for continuity between terminal No. 13 and left rear center sensor terminal No. 2: There should be continuity.	An open or high resistance in the wire
13	LT BLU	Disconnect the left rear center sensor 2P connector	Check for continuity between terminal No. 13 and body ground: There should be no continuity.	A short to ground in the wire
8	GRY	Disconnect the rear center sensor 2P connectors and the rear corner sensor 2P connectors	Check for continuity between terminal No. 8 and each rear corner sensor and each rear center sensor terminal No. 1: There should be continuity.	An open or high resistance in the wire
8	GRY		Check for continuity between terminal No. 8 and body ground: There should be no continuity.	A short to ground in the wire