Chrysler Concorde 2004 Service Manual page 236

ELECTRICALLY HEATED SYSTEMS
*REAR WINDOW DEFOGGER INOPERATIVE WITH ATC —
TEST
4 Remove the Rear Window Defogger Relay (located in the right side of trunk).
Measure the voltage between both Fused B(+) circuits and ground.
Is the voltage above 10.0 volts on both Fused B(+) circuits?
Yes → Go To 5
→ Go To 9
No
5 Remove the Rear Window Defogger Relay located in the right side of trunk.
Connect a jumper wire between Rear Window Defogger Relay Output circuit and
Fused B+ in the relay connector.
Note: Do not leave the jumper connected for a long period of time.
Measure the voltage between the Rear Window Defogger Relay Output circuit at the
right side of the window grid and ground.
Is the voltage above 10.0 volts?
Yes → Go To 6
→ Repair the open Rear Defogger Relay Output circuit between the
No
6 Remove the Rear Window Defogger Relay located in the right side of trunk.
Connect a test light between the Fused B+ and the Rear Window Defogger Relay
Control circuits in the relay connector.
Press the Rear Window Defogger Switch on and observe the test light.
Does the test light illuminate when the switch is on?
Yes → Replace the Rear Window Defogger Relay.
→ Go To 7
No
7 Turn the ignition off.
Disconnect the Body Control Module C4 connector.
Remove the Rear Window Defogger Relay located in the right side of trunk.
NOTE: Check connectors - Clean or repair as necessary.
Connect a jumper wire between the Rear Window Defogger Relay Control circuit in
the BCM C4 connector and ground.
Measure the resistance between the Rear Window Defogger Relay Control circuit in
the relay connector and ground.
Is the resistance below 5.0 ohms?
Yes → Go To 8
→ Repair the open Rear Window Defogger Relay Control Circuit.
No
8 If there are no possible causes remaining, view repair.
Repair
ACTION
relay connector and the rear defogger grid.
Perform MEMORY HEATED SYSTEM VERIFICATION TEST -
VER 1.
Perform MEMORY HEATED SYSTEM VERIFICATION TEST -
VER 1.
Perform MEMORY HEATED SYSTEM VERIFICATION TEST -
VER 1.
Replace the Body Control Module.
Perform MEMORY HEATED SYSTEM VERIFICATION TEST -
VER 1.
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Continued
APPLICABILITY
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