Manual A/C Blower Motor Inoperative - Chrysler Concorde 2004 Service Manual

HEATING & A/C
Symptom:

*MANUAL A/C BLOWER MOTOR INOPERATIVE

JUNCTION BLOCK FUSE #23
FUSED IGNITION SWITCH OUTPUT CKT SHORTED TO GROUND
BLOWER MOTOR - SHORT TO GROUND
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN TO RESISTOR
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN TO MOTOR
BLOWER MOTOR OPEN
BLOWER MOTOR INOPERATIVE
GROUND CIRCUIT OPEN
HEAD- MOTOR DRIVER OPEN
BLOWER MOTOR DRIVER CIRCUIT OPEN
RESISTOR-OPEN HI BLOWER MOTOR DRIVER
TEST
1 Remove and inspect Fuse #23 from the Junction Block.
Is the fuse open?
Yes → Go To 2
→ Go To 4
No
2 Turn the ignition off.
Replace Fuse #23 in the Junction Block.
Turn the ignition on.
Turn the blower on and operate it in all speeds and modes.
Does the blower motor operate properly without blowing the fuse?
Yes → Check the Fused Ignition Switch Output circuit for an intermit-
→ Go To 3
No
3 Turn the ignition off.
Turn the Blower Motor Switch off.
Disconnect the Blower Motor 2-way harness connector.
Measure the resistance between ground and the Fused Ignition Switch Output
circuit (the DG or DB/YL wire in the blower motor 2-way connector).
Is the resistance below 5.0 ohms?
Yes → Check the Blower Motor Resistor Block for resistance to ground.
→ Replace the Blower Motor and fuse.
No
POSSIBLE CAUSES
ACTION
tent short to ground. Refer to the wiring diagrams located in the
service information.
Perform BODY VERIFICATION TEST - VER 1.
If ok, repair the Fused Ignition Switch Output circuit for a short
to ground and replace the fuse.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
336
APPLICABILITY
All
All
All