Dodge Ram. Manual — part 130
TEST
ACTION
APPLICABILITY
6
Turn the ignition off.
Disconnect the Radio C2 harness connector.
Disconnect the Hands Free Module harness connector.
Measure the resistance between the Left Audio Output circuit and the Right Audio
Output circuit.
Is the resistance above 1000 ohms?
All
Yes
→ Inspect the wiring and connectors for damage or shorted circuits.
Repair as necessary. If ok, replace and program the Hands Free
Module in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Repair the Left Audio Output circuit for a short to the Right Audio
Output circuit.
Perform BODY VERIFICATION TEST - VER 1.
7
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running at normal operating temperature, wiggle the wiring
harnesses. This is to try and duplicate the failure.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?
All
Yes
→ Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
517
TELECOMMUNICATION
RIGHT AUDIO INPUT SHORT TO GROUND —
Continued
Symptom:
RPM MESSAGE NOT RECEIVED
When Monitored and Set Condition:
RPM MESSAGE NOT RECEIVED
When Monitored:
With the ignition on.
Set Condition:
The Hands Free Module does not detect a Bus message indicating current
engine rpm.
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE PCM
MODULE
TEST
ACTION
APPLICABILITY
1
Start and idle the engine.
With the DRBIII
t, select Engine and read the Engine RPM.
Was the DRBIII
t able to I/D or communicate with the PCM and read RPM?
All
Yes
→ Go To 2
No
→ Refer to the Communication category for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
2
With the DRBIII
t, erase DTC’s.
Cycle the ignition switch from off to on and wait approximately 1 minute.
With the DRBIII
t, read DTC’s.
Did this DTC reset?
All
Yes
→ Replace the Hands Free Module in accordance with the service
information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
518
TELECOMMUNICATION
Symptom:
VIN MESSAGE NOT RECEIVED
When Monitored and Set Condition:
VIN MESSAGE NOT RECEIVED
When Monitored:
With the ignition on.
Set Condition:
The Hands Free Module does not receive the VIN message from the PCM.
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE PCM
CHECK PCM IS ACTIVE ON BUS
MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, attempt to communicate with the PCM.
Was the DRBIII
t able to I/D or communicate with the PCM?
All
Yes
→ Go To 2
No
→ Refer to the Communication category for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition on.
With the DRBIII
t, select System Monitors then J1850 Module Scan.
Is the PCM one of the modules present on the bus?
All
Yes
→ Go To 3
No
→ Refer to the Communication category for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
3
With the DRBIII
t, erase DTC’s.
Cycle the ignition switch from off to on and wait approximately 1 minute.
With the DRBIII
t, read DTC’s.
Did this DTC reset?
All
Yes
→ Replace the Hands Free Module in accordance with the service
information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
519
TELECOMMUNICATION
Symptom:
VIN MISMATCH
When Monitored and Set Condition:
VIN MISMATCH
When Monitored:
With the ignition on.
Set Condition:
The Hands Free Module will receive and monitor the VIN message from
the PCM and record the VIN if different from the last VIN.
POSSIBLE CAUSES
PCM DTC’S
MODULE-VIN MISMATCH
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, read PCM DTCs.
Are there any PCM DTC’s?
All
Yes
→ Refer to the Driveability category for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 2
2
With the DRBIII
t, erase the HFM DTC’s.
Cycle the ignition switch from off to on and wait approximately 1 minute.
With the DRBIII
t, read DTC’s.
Did this DTC reset?
All
Yes
→ Replace the Hands Free Module in accordance with the service
information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
520
TELECOMMUNICATION
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