Power Seat Control Unit Input Test/Replacement

NOTE:

SRS components are located in this area. Review the SRS component locations (see COMPONENT LOCATION INDEX ), and precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repairs or servicing.
If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A )
Power Seat Control Unit appears as MEMORY SEAT CONTROL UNIT on HDS display screen.

Turn the ignition switch to LOCK (0).
Remove the driver's power seat (see FRONT SEAT REMOVAL/INSTALLATION ).
NOTE: Be careful not to scratch the interior trim.
Disconnect the connectors from the power seat control unit (A).

Fig 1: View Of Power Seat Control Unit Connector
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.
Reconnect the connectors to the power seat 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.

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
A9 . B4 . B18	BLK	In all ignition switch positions	Measure the voltage to ground: There should be less than 0.2 V.	Poor ground (G551) An open or high resistance in the ground wire
A35	YEL	Ignition switch ON (II)	Measure the voltage to ground: There should be battery voltage.	Blown No. 1 (7.5 A) fuse in the under-dash fuse/relay box An open or high resistance in the wire
A37	WHT/RED	Under all conditions	Measure the voltage to ground: There should be battery voltage.	Blown No. 23 (10 A) fuse in the under-hood fuse/relay box An open or high resistance in the wire
B1	WHT/RED	Under all conditions	Measure the voltage to ground: There should be battery voltage.	Blown No. 13 (20 A) fuse in the under-hood fuse/relay box An open or high resistance in the wire
B8	WHT/BLU	Under all conditions	Measure the voltage to ground: There should be battery voltage.	Blown No. 14 (20 A) fuse in the under-hood fuse/relay box An open or high resistance in the wire
A16	GRN	Under all conditions	Attach to ground: The driving position memory switch indicator 1 should come on.	Blown No. 23 (10 A) fuse in the under-hood fuse/relay box Faulty driving position memory switch An open or high resistance in the wire
A17	RED	Under all conditions	Attach to ground: The driving position memory switch indicator 2 should come on.	Blown No. 23 (10 A) fuse in the under-hood fuse/relay box Faulty driving position memory switch An open or high resistance in the wire
A18	BLU	Press the No. 1 button of the driving position memory switch	Measure the voltage to ground: There should be less than 0.2 V.	Poor ground (G501) or an open in the ground wire Faulty driving position memory switch An open or high resistance in the wire
A19	BLU/YEL	Press the No. 2 button of the driving position memory switch	Measure the voltage to ground: There should be less than 0.2 V.	Poor ground (G501) or an open in the ground wire Faulty driving position memory switch An open or high resistance in the wire
A20	WHT	Press the SET button of the driving position memory switch	Measure the voltage to ground: There should be less than 0.2 V.	Poor ground (G501) or an open in the ground wire Faulty driving position memory switch An open or high resistance in the wire
A31	BLU/BLK	Shift lever in P position	Measure the voltage to ground: There should be less than 0.2 V.	Poor ground (G101) or an open in the ground wire Faulty transmission range switch An open or high resistance in the wire