Door Multiplex Control Unit Input Test

WARNING: This page is about a different car, the 2011 Acura TL, 2010 Acura TL, and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.

Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
Remove the driver's door panel (see FRONT DOOR PANEL REMOVAL/INSTALLATION )
Disconnect the 37P connector (A) from the power window master switch (B)

Fig 1: Identifying Power Window Master Switch 37P Connector Terminals
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 connector to the power window master switch, and do these input tests at the following connector

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 INPUT CHART

Cavity	Wire	Test condition	Test Desired result	Possible cause if desired result is not obtained
32	BLK	Under all conditions	Measure the voltage to ground: There should be less than 0.2V	Poor ground (G401) or an open in the ground wire An open or high resistance in the wire
37	BLK	Under all conditions	Measure the voltage to ground: There should be less than 0.2V	Poor ground (G402) or an open in the ground wire An open or high resistance in the wire
13	WHT	Under all conditions	Measure the voltage to ground: There should be battery voltage	Blown No 15 (10 A) fuse in the under-hood fuse/relay box An open or high resistance in the wire
14	LT GRN	Ignition switch ON (II), or ignition mode ON	Measure the voltage to ground: There should be battery voltage	Blown No 16 (7.5 A) fuse in the driver's under-dash fuse/relay box An open or high resistance in the wire
25	WHT	Under all conditions	Measure the voltage to ground: There should be battery voltage	Blown No 3-4(DR F/B) (60A) fuse in the under-hood fuse/relay box Blown No 24 (20 A) fuse in the driver's under-dash fuse/relay box An open or high resistance in the wire
16	RED	Ignition switch ON (III), or ignition mode ON, position 2 switch pressed	Measure the voltage to ground: There should be less than 0.2V	Poor ground (G401) or an open in the ground wire Faulty driving position memory switch An open or high resistance in the wire
16	RED	Ignition switch ON (III), or ignition mode ON, position 2 switch released	Measure the voltage to ground: There should be about 5 V	Faulty driving position memory switch A short to ground in the wire
17	LT GRN	Ignition switch ON (III), or ignition mode ON, position 1 switch pressed	Measure the voltage to ground: There should be less than 0.2V	Poor ground (G401) or an open in the ground wire Faulty driving position memory switch An open or high resistance in the wire
17	LT GRN	Ignition switch ON (III), or ignition mode ON, position 1 switch released	Measure the voltage to ground: There should be about 5 V	Faulty driving position memory switch A short to ground in the wire
19	ORN	Ignition switch ON (III), or ignition mode ON, SET switch pressed	Measure the voltage to ground: There should be less than 0.2V	Poor ground (G401) or an open in the ground wire Faulty driving position memory switch An open or high resistance in the wire
19	ORN	Ignition switch ON (III), or ignition mode ON, SET switch released	Measure the voltage to ground: There should be about 5 V	Faulty driving position memory switch A short to ground in the wire

Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, then disconnect the connector from the power window master switch, and do these input tests at the following connector

If any test indicates a problem, find and correct the cause, then recheck the system
If all the input tests prove OK, the door multiplex control unit must be faulty, replace the power window master switch

NOTE: After replacing the power window master switch, reset the power window control unit (see RESETTING THE POWER WINDOW CONTROL UNIT )

TEST CONDITION INPUT CHART

Cavity	Wire	Test condition	Test Desired result	Possible cause if desired result is not obtained
4	BLU	Under all conditions	Connect terminals No 13 and No 4: The driving position memory switch indicator 2 should come on	Faulty driving position memory switch Faulty LED Poor ground (G401) or an open in the ground wire An open or high resistance in the wire
6	GRN	Under all conditions	Connect terminals No 13 and No 6: The driving position memory switch indicator 1 should come on	Faulty driving position memory switch Faulty LED Poor ground (G401) or an open in the ground wire An open or high resistance in the wire
26	YEL	Under all conditions	Connect terminals No 13 and No 26: The driving position memory switch lights should come on	Faulty driving position memory switch Faulty LED Poor ground (G401) or an open in the ground wire An open or high resistance in the wire
33	BLU	Under all conditions (disconnect the power seat control unit connector B (40P))	Check for continuity between terminal No 33 and power seat control unit connector B (40P) terminal No 39: There should be continuity	An open or high resistance in the wire
35	PNK	Under all conditions (disconnect the power seat control unit connector B (40P))	Check for continuity between terminal No 35 and power seat control unit connector B (40P) terminal No 40: There should be continuity	An open or high resistance in the wire