Chrysler RG Voyager. Manual — part 195
TEST
ACTION
APPLICABILITY
2
NOTE: Repeat this test until either the DTC is no longer present or all of the
modules and components are disconnected from the Fused Ignition Switch
Output (Run) circuit and the DTC is still present.
Turn the ignition off.
Verify which of these modules and components are used on the vehicle you are
diagnosing: HVAC (ATC or MTC); Rear ATC Control Switch; IP Switch Bank; Auto
Daylight Mirror; Overhead Console; Heated Seat Module (Driver/Pass); ABS module.
NOTE: For the result of this test to be valid, disconnect only one module or
component at a time and then verify if the DTC is still present.
Using the wiring diagram/schematic as a guide, disconnect the harness connector
with the Fused Ignition Switch Output (Run) circuit from one module or component
identified above.
NOTE: Check connectors - Clean/repair as necessary.
Turn the ignition on.
With the DRBIII
t in Body Computer, erase BCM DTCs.
Cycle the ignition form ON to OFF.
Start the engine.
With the DRBIII
t in Body Computer, read BCM DTCs.
Does the DRBIII
t display IGNITION RUN OUTPUT SHORT?
All
Yes (All Modules/Components Disconnected
No
→ Replace the module or the component that when disconnected did
not reset the DTC in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
3
NOTE: All modules and components identified in Test Number 2 must be
disconnected from the BCM’s Fused Ignition Switch Output (Run) circuit
and the DTC must still be present for the result of this test to be valid.
Turn the ignition off.
Disconnect the Body Control Module (BCM) C3 and C4 harness connectors.
Measure the resistance between ground and the Fused Ignition Switch Output (Run)
circuits in the BCM C3 harness connector.
Measure the resistance between ground and the Fused Ignition Switch Output (Run)
circuit in the BCM C4 harness connector.
Is the resistance below 10K ohms on any of the circuits?
All
Yes
→ Repair the Fused Ignition Switch Output (Run) circuit(s) with a
resistance below 10K ohms for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Body Control Module (BCM) in accordance with the
service information.
Perform BODY VERIFICATION TEST - VER 1.
749
IGNITION, POWER, ACCESSORY
IGNITION RUN OUTPUT SHORT —
Continued
Symptom:
IGNITION RUN/START INPUT WIRING
When Monitored and Set Condition:
IGNITION RUN/START INPUT WIRING
When Monitored:
With the ignition on and battery voltage greater than 10.4 volts.
Set Condition:
The Fused Ignition Switch Output circuit voltage at the FCM goes below
0.5 volts.
POSSIBLE CAUSES
TEST FOR CURRENT DTC’S
FRONT CONTROL MODULE INTERNAL MALFUNCTION
FUSE AND RELAY CENTER INTERNAL MALFUNCTION
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, record and erase the current Front Control Module DTC’s.
Cycle the ignition from ON to OFF.
Start the vehicle and observe the DRBIII
t.
With the DRBIII
t, read DTC’s.
Does the DRBIII
t display: IGNITION RUN-START INPUT WIRING?
All
Yes
→ Go To 2
No
→ The condition that caused this DTC is currently not present. Use
the wiring diagram/schematic as a guide, and inspect the related
wiring harness for a possible intermittent condition.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition off.
Disconnect the Front Control Module from the Fuse and Relay Center.
Measure the voltage of the Fused Ignition Switch Output circuit (cavity 37) at the
Fuse and Relay Center side of the FCM connector.
Turn the ignition on.
Is the voltage above 10.0 volts?
All
Yes
→ Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
750
IGNITION, POWER, ACCESSORY
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Gain access to the bottom of the Fuse and Relay Center.
Disconnect connector C9 from the Fuse and Relay Center.
Measure the resistance of the Fused Ignition Switch Output circuit between the FCM
connector cavity 37 and the Fuse and Relay Center connector C9 cavity 2.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the Fused Ignition Switch Output circuit for an open
between the Fuse and Relay Center and the ignition switch.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Fuse and Relay Center.
Perform BODY VERIFICATION TEST - VER 1.
751
IGNITION, POWER, ACCESSORY
IGNITION RUN/START INPUT WIRING —
Continued
Symptom:
IGNITION START INPUT WIRING
When Monitored and Set Condition:
IGNITION START INPUT WIRING
When Monitored:
With the ignition on and battery voltage greater than 10.4 volts.
Set Condition:
The Fused Ignition Switch Output (Start) circuit voltage at the FCM goes
below 0.5 volts.
POSSIBLE CAUSES
TEST FOR CURRENT DTC’S
FRONT CONTROL MODULE INTERNAL MALFUNCTION
FUSE AND RELAY CENTER INTERNAL MALFUNCTION
FUSED IGNITION SWITCH OUTPUT (START) CIRCUIT OPEN
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, record and erase the current Front Control Module DTC’s.
Cycle the ignition from ON to OFF.
Start the vehicle and observe the DRBIII
t.
With the DRBIII
t, read DTC’s.
Does the DRBIII
t display: IGNITION START INPUT WIRING?
All
Yes
→ Go To 2
No
→ The condition that caused this DTC is currently not present. Use
the wiring diagram/schematic as a guide, and inspect the related
wiring harness for a possible intermittent condition.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition off.
Disconnect the Front Control Module from the Fuse and Relay Center.
Measure the voltage of the Fused Ignition Switch Output (Start) circuit (cavity 19) at
the Fuse and Relay Center side of the FCM connector.
Turn the ignition to the start position and monitor the voltage reading.
Is the voltage above 10.0 volts with the ignition switch in the start position?
All
Yes
→ Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
752
IGNITION, POWER, ACCESSORY
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