Diagnosis And Testing - Window Switch

Remove the switch to be tested (Refer to ELECTRICAL/POWER WINDOWS/POWER WINDOW SWITCH - REMOVAL) .

Using an ohmmeter, test front switch for continuity. See Fig 1.

Fig 1: Identifying Front Window Switch Terminals

Courtesy of DAIMLERCHRYSLER CORP.

POWER WINDOW FRONT SWITCH TEST

SWITCH POSITION	CONTINUITY BETWEEN
OFF	14 AND 4
-	14 AND 5
-	14 AND 6
-	14 AND 7
-	14 AND 9
-	14 AND 11
-	14 AND 12
-	14 AND 13
LEFT FRONT UP	10 AND 11
LEFT FRONT DOWN	10 AND 9
RIGHT FRONT UP	10 AND 12
RIGHT FRONT DOWN	10 AND 13
LEFT REAR UP	10 AND 5
LEFT REAR DOWN	10 AND 4
RIGHT REAR UP	10 AND 7
RIGHT REAR DOWN	10 AND 6
LOCKOUT (LOCKED)	NO CONTINUITY BETWEEN 10 AND 2
LOCKOUT (UNLOCKED)	10 AND 2

If the proper results are not obtained, replace the front window switch.

Test rear switch for continuity. See Fig 2.

Fig 2: Identifying Rear Window Switch Terminals

Courtesy of DAIMLERCHRYSLER CORP.

POWER WINDOW REAR SWITCH TEST

SWITCH POSITION	CONTINUITY BETWEEN
OFF	1 AND 3
-	4 AND 2
-	7 AND 10
-	8 AND 9
LEFT UP	10 AND 6
LEFT DOWN	6 AND 8
RIGHT UP	5 AND 2
RIGHT DOWN	5 AND 3

If the proper results are not obtained, replace the rear window switch.

The power window master switch has a Auto-Down feature on both front windows. The switch is equipped with two detent positions when actuating the power window OPEN. The first detent position allows the window to roll down and stop when the switch is released. The second detent position actuates an integral express roll down relay that rolls the window down after the switch is released. When the express down circuit senses stall current (window has reached end of down travel), the switch will turn current off to the motor. The AUTO feature can be cancelled by actuating the switch UP or DOWN while window is in motion. If the electronic circuit in the switch fails to detect a stall current, the auto down circuit will time out within 9 to 14 seconds.