Chrysler 300M 2002 Service Manual page 2056

*MANUAL A/C BLOWER MOTOR INOPERATIVE —
TEST
4 Ensure Junction Block Fuse #23 is installed before proceeding.
Turn the Blower Motor Switch off.
Disconnect the Blower Motor Resistor Block harness connector.
Turn the ignition on.
Measure the voltage of the Fused Ignition Switch Output circuit.
Is the voltage above 10.0 volts?
Yes → Go To 5
→ Repair the Fused Ignition Switch Output circuit for an open.
No
5 Reconnect the Blower Motor Resistor Block harness connector.
Turn the ignition on.
While backprobing, measure the voltage of the Fused Ignition Switch Output ckt at
the Blower Motor 2-way connector (DG or DB/YL circuit).
Is the voltage above 10.0 volts?
Yes → Go To 6
→ Replace the Blower Motor Resistor Block.
No
6 Turn the Blower Motor Switch off.
Turn the ignition on.
While backprobing, measure the voltage of the Blower Motor Driver circuit at the
Blower Motor 2-way connector (BK or BK/TN circuit).
Is the voltage above 10.0 volts?
Yes → Go To 7
→ Replace the Blower Motor.
No
7 Turn the Blower Motor Switch off.
Turn the ignition on.
Backprobe a jumper wire between ground and the Blower Motor Driver ckt at the
Blower Motor 2-way connector (BK or BK/TN circuit).
Did the blower motor run on high speed?
Yes → Go To 8
→ Replace the Blower Motor.
No
8 Disconnect the Manual Temp Control Head C2 harness connector.
Connect a jumper wire between the High Blower Motor Driver circuit and ground in
the Control Head C2 connector.
Turn the ignition on.
Did the blower motor run on high speed?
Yes → Go To 9
→ Go To 10
No
ACTION
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
333
HEATING & A/C
Continued
APPLICABILITY
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