Chrysler RG Voyager. Manual — part 186
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TEST
ACTION
APPLICABILITY
10
Turn the ignition off.
Disconnect the Rear Blower Front Control Switch harness connector.
Disconnect the Rear Blower Rear Control Switch C1 harness connector.
Disconnect the Rear Blower Motor Resistor Block harness connector.
Measure the resistance of each of the Rear Blower Motor Driver circuits (Low,
Medium, and High) between the Rear Blower Motor Resistor Block harness connec-
tor and the Rear Blower Motor Front Control Switch harness connector.
Measure the resistance of each of the Rear Blower Motor Driver circuits (Low,
Medium, and High) between the Rear Blower Motor Resistor Block harness connec-
tor and the Rear Blower Rear Control Switch C1 harness connector.
Is the resistance below 5.0 ohms on each of the circuits?
All
Yes
→ Replace the Rear Blower Motor Resistor Block in accordance with
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Repair all Rear Blower Motor Driver circuit(s) with a resistance
above 5 ohms for an open.
Perform BODY VERIFICATION TEST - VER 1.
713
HEATING & A/C
*REAR BLOWER MOTOR SPEEDS INCORRECT - MTC —
Continued
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Symptom:
*REAR BLOWER REAR CONTROL SWITCH INOP IN ONE OR
MORE SPEEDS - MTC
POSSIBLE CAUSES
REAR BLOWER MOTOR DRIVER CIRCUIT(S) OPEN
REAR BLOWER REAR CONTROL SWITCH
REAR BLOWER MOTOR FRONT CONTROL FEED CIRCUIT OPEN
A/C - HEATER CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition off.
Disconnect the Rear Blower Rear Control Switch C1 harness connector.
Turn the ignition on.
On RG vehicles, press the A/C - Heater Control power switch on.
NOTE: The test light must illuminate brightly. Compare the brightness to
that of a direct connection to the battery.
Using a 12-volt test light connected to ground, back probe each of the Rear Blower
Motor Driver circuits (Low, Medium, and High).
Does the test light illuminate brightly on each circuit?
All
Yes
→ Go To 2
No
→ Repair all Rear Blower Motor Driver circuits that failed to
illuminate the test light brightly for an open.
Perform BODY VERIFICATION TEST - VER 1.
2
On RG vehicles, press the A/C - Heater Control power switch off.
Turn the ignition off.
Make sure that the Rear Blower Rear Control C1 harness connector is connected to
the Rear Blower Rear Control Switch.
Using a jumper wire connected to ground, back probe the Rear Blower Motor Front
Control Feed circuit in the Rear Blower Rear Control Switch C1 harness connector.
Turn the ignition on.
On RG vehicles, press the A/C - Heater Control power switch on.
Turn the Blower switch on the Rear Blower Rear Control Switch to each speed
position.
Does the rear blower run in all speeds?
All
Yes
→ Go To 3
No
→ Replace the Rear Blower Rear Control Switch in accordance with
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
714
HEATING & A/C
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TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the Rear Blower Front Control Switch harness connector.
Disconnect the Rear Blower Rear Control Switch C1 harness connector.
Measure the resistance of the Rear Blower Motor Front Control Feed circuit between
the Rear Blower Front Control Switch harness connector and the Rear Blower Rear
Control Switch C1 harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace the A/C - Heater Control Module in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Repair the Rear Blower Motor Front Control Feed circuit for an
open.
Perform BODY VERIFICATION TEST - VER 1.
715
HEATING & A/C
*REAR BLOWER REAR CONTROL SWITCH INOP IN ONE OR MORE
SPEEDS - MTC —
Continued
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Symptom:
ACCESSORY POWER OUTPUT 1 OPEN
When Monitored and Set Condition:
ACCESSORY POWER OUTPUT 1 OPEN
When Monitored:
Continuously with the ignition on.
Set Condition:
The FCM has detected an open in the Accessory Relay control circuit.
POSSIBLE CAUSES
FRONT CONTROL MODULE
FUSE & RELAY CENTER INTERNAL MALFUNCTION
ACCESSORY RELAY
FRONT CONTROL MODULE
INTERMITTENT CONDITION
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, erase the current Front Control Module DTC’s.
Turn the ignition off, wait 10 seconds then turn the ignition on.
With the DRBIII
t, read the current Front Control Module DTC’s.
Does the DRBIII
t display both the ACCESSORY POWER OUTPUT OPEN trouble
codes?
All
Yes
→ Go To 2
No
→ Go To 3
2
Turn the ignition off.
Disconnect the Accessory Relay from the Fuse & Relay Center.
Connect a known good relay to the Accessory Relay location in the Fuse & Relay
Center.
Turn the ignition on.
With the DRBIII
t, erase the current Front Control Module DTC’s.
Turn the ignition off, wait 10 seconds then turn the ignition on.
With the DRBIII
t, read the current Front Control Module DTC’s.
Does the DRBIII
t display both the ACCESSORY POWER OUTPUT OPEN trouble
codes?
All
Yes
→ Replace the Fuse and Relay Center.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the original Accessory Relay.
Perform BODY VERIFICATION TEST - VER 1.
716
IGNITION, POWER, ACCESSORY
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