Driving Position Memory System (Door Multiplex Control Unit and Power Seat Control Unit) Input Test

NOTE:

SRS components are located in this area. Review the SRS component locations and the precautions and procedures before doing repairs or service.
Make sure the fuses associated with the system is OK.
Before testing, check for DTCs. If any DTCs are indicated, troubleshoot those DTCs first.
If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A .

Power Seat Control Unit

1. Turn the vehicle to the OFF (LOCK) mode.

2. Disconnect the power seat control unit connectors.

Power Seat Control Unit Connector A (20P) (female terminals): Power Seat Control Unit Connector B (12P) (female terminals):

Courtesy of HONDA, U.S.A., INC.

Inspect the connectors 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.

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, go to step 5.

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
A13	PNK	Vehicle ON mode	Measure the voltage to ground:There should be battery voltage.	An open or high resistance in the wire

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
A11	BLU	Under all conditions	Measure the voltage to ground:There should be battery voltage.	An open or high resistance in the wire
B6	LT BLU	Under all conditions	Measure the voltage to ground:There should be battery voltage.	An open or high resistance in the wire
B12	PNK	Under all conditions	Measure the voltage to ground:There should be battery voltage.	An open or high resistance in the wire
B2	GRY	In all power modes	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
B5	BLK	In all power modes	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
A20	GRN	In all power modes	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	PUR	Shift position/mode in P	Check for continuity to ground:There should be continuity.	Faulty transmission range switch An open or high resistance in the wire
A1	PUR	Shift position/mode in any other than P	Check for continuity to ground:There should be no continuity.	Faulty transmission range switch A short to ground in the wire
A6	PUR	Vehicle ON mode	Measure the voltage to ground:There should be at least about 10 V.	Faulty position sensor A short to ground in the wire
A10A19	REDORN	Run the recline motor	Measure the voltage between terminals A10 (+) and A19 (-):There should be about 2.5 V average.	Faulty position sensor An open or high resistance in the wire A short to ground in the wire
A8A19	BRNORN	Run the slide motor	Measure the voltage between terminals A8 (+) and A19 (-):There should be about 2.5 V average.	Faulty position sensor An open or high resistance in the wire A short to ground in the wire
A7A19	PNKORN	Run the front up-down motor	Measure the voltage between terminals A7 (+) and A19 (-):There should be about 2.5 V average.	Faulty position sensor An open or high resistance in the wire A short to ground in the wire
A9A19	YELORN	Run the rear up-down motor	Measure the voltage between terminals A9 (+) and A19 (-):There should be about 2.5 V average.	Faulty position sensor An open or high resistance in the wire A short to ground in the wire

5. Turn the vehicle to the OFF (LOCK) mode.Disconnect the connectors from the power seat control unit, and do these input tests at the following 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 7.

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
B3B1	YELWHT	Under all conditions	Connect terminals B6 and B3, and terminals B1 and B2:The seat should slide forward.	Faulty slide motor An open or high resistance in the wire
B3B1	YELWHT	Under all conditions	Connect terminals B6 and B1, and terminals B3 and B2:The seat should slide backward.	Faulty slide motor An open or high resistance in the wire
B8B11	GRYYEL	Under all conditions	Connect terminals B12 and B8, and terminals B11 and B5:The seat should recline forward.	Faulty recline motor An open or high resistance in the wire
B8B11	GRYYEL	Under all conditions	Connect terminals B12 and B11, and terminals B8 and B5:The seat should recline backward.
B10B7	ORNYEL	Under all conditions	Connect terminals B6 and B10, and terminals B7 and B2:The front of seat should move up.	Faulty front up-down motor An open or high resistance in the wire
B10B7	ORNYEL	Under all conditions	Connect terminals B6 and B7, and terminals B10 and B2:The front of seat should move down.
B9B4	GRNWHT	Under all conditions	Connect terminals B12 and B9, and terminals B4 and B5:The rear of seat should move up.	Faulty rear up-down motor An open or high resistance in the wire
B9B4	GRNWHT	Under all conditions	Connect terminals B12 and B4, and terminals B9 and B5:The rear of seat should move down.

Door Multiplex Control Unit (Power Window Master Switch)

7. Turn the vehicle to the OFF (LOCK) mode.

8. Disconnect the power window master switch 37P connector.

Power Window Master Switch 37P Connector (female terminals)

Courtesy of HONDA, U.S.A., 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 10.

Reconnect the connector to the power window master switch, 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 11.

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
37	RED	Under all conditions	Measure the voltage to ground:There should be battery voltage.	An open or high resistance in the wire
3	BLK	In all power modes	Measure the voltage to ground:There should be less than 0.2 V.	Poor ground (G401) An open or high resistance in the ground wire
29	BLK	In all power modes	Measure the voltage to ground:There should be less than 0.2 V.	Poor ground (G401) An open or high resistance in the ground wire
5	GRY	Vehicle ON mode, POSITION 1 button pressed	Measure the voltage to ground:There should be less than 0.2 V.	Faulty driving position memory switch Poor ground (G401) or an open in the ground wire An open or high resistance in the wire
5	GRY	Vehicle ON mode, POSITION 1 button released	Measure the voltage to ground:There should be about 5 V.	Faulty driving position memory switch A short to ground in the wire
6	RED	Vehicle ON mode, POSITION 2 button pressed	Measure the voltage to ground:There should be less than 0.2 V.	Faulty driving position memory switch Poor ground (G401) or an open in the ground wire An open or high resistance in the wire
6	RED	Vehicle ON mode, POSITION 2 button released	Measure the voltage to ground:There should be about 5 V.	Faulty driving position memory switch A short to ground in the wire

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
17	YEL	Vehicle ON mode, SET button pressed	Measure the voltage to ground:There should be less than 0.2 V.	Faulty driving position memory switch Poor ground (G501) or an open in the ground wire An open or high resistance in the wire
17	YEL	Vehicle ON mode, SET button released	Measure the voltage to ground:There should be about 5 V.	Faulty driving position memory switch A short to ground in the wire

11. Turn the vehicle to the OFF (LOCK) mode.Disconnect the connector from the power window master switch, 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 13.

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
22	PUR	Under all conditions	Connect terminals No. 22 and No. 37 with a jumper wire:The driving position memory switch INDICATOR 1 should come on.	Faulty LED Faulty driving position memory switch Poor ground (G401) or an open in the ground wire An open or high resistance in the wire
24	GRN	Under all conditions	Connect terminals No. 24 and No. 37 with a jumper wire:The driving position memory switch INDICATOR 2 should come on.	Faulty LED Faulty driving position memory switch Poor ground (G401) or an open in the ground wire An open or high resistance in the wire
30	PNK	Under all conditions	Connect terminals No. 30 and No. 37 with a jumper wire:The driving position memory switch lights should come on.	Faulty LED Faulty driving position memory switch Poor ground (G401) or an open in the ground wire An open or high resistance in the wire

13. If multiple failures are found on more than one control unit, replace the power seat control unit . If input failures are related to a particular control unit, replace the control unit.