Test Step Result / Action to Take
L1 CHECK THE VOLTAGE TO THE PASSENGER REAR WINDOW CONTROL SWITCH —
CIRCUIT 170 (RD/LB)
Disconnect: Passenger Rear Window Control Switch C801.
Ignition ON.
NOTE: Set the driver window control switch to the UNLOCK position.
Measure the voltage between the passenger rear window control switch C801-3, circuit 170
(RD/LB) harness side and ground.
Is the voltage greater than 10 volts?
Yes
GO to L2.
No
REPAIR the circuit. TEST system for normal operation.
L2 CHECK THE GROUNDS TO THE PASSENGER REAR WINDOW CONTROL SWITCH —
CIRCUITS 320 (RD/BK) AND 319 (YE/BK)
Ignition OFF.
Measure the resistance between passenger rear window control switch C801-1, circuit 320
(RD/BK) and C801-6, circuit 319 (YE/BK) harness side and ground.
Are the resistances less than 5 ohms?
Yes
GO to L4.
No
GO to L3.
L3 CHECK CIRCUITS 320 (RD/BK) AND 319 (YE/BK) FOR AN OPEN
Ignition OFF.
Disconnect: Driver Window Control Switch C504b.
NOTE: Set the driver window control switch to the UNLOCK position.
Measure the resistance between driver window control switch C504b-2, circuit 320 (RD/BK)
and passenger rear window control switch C801-1, circuit 320 (RD/BK) harness side.
Measure the resistance between driver window control switch C504b-3, circuit 319 (YE/BK)
and passenger rear window control switch C801-6, circuit 319 (YE/BK) harness side.
Is the resistance less than 5 ohms?
Yes
INSTALL a new passenger rear window control switch. REFER to Window
Control Switch. TEST the system for normal operation.
No
REPAIR circuit 320 (RD/BK) or circuit 319 (YE/BK). TEST system for normal
operation.
L4 CHECK THE PASSENGER REAR WINDOW CONTROL SWITCH
Disconnect: Passenger Rear Window Control Switch C801.
Ignition ON.
Connect a jumper wire between passenger rear window control switch C801-6, circuit 319
(YE/BK) and C801-5, circuit 881 (BN) and a second jumper wire between C801-3, circuit
170 (RD/LB) and C801-2, circuit 882 (BN/YE) harness side. The window should operate in
the down direction.
Yes
If the passenger rear window did not operate with the passenger rear window
control switch, INSTALL a new passenger rear window control switch. If the
passenger rear power window did operate with the passenger rear window
control switch but not with the driver front window control switch, INSTALL a
new driver front window control switch. REFER to Window Control Switch in
this section. TEST the system for normal operation.
No
GO to L5.
2003 Explorer/Mountaineer Workshop Manual
http://www.fordtechservice.dealerconnection.com/pubs/content/~WS3N/~MUS~LEN/19/S
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