Dodge Ram 2004 Service Manual page 514

TELECOMMUNICATION
GENERAL MICROPHONE FAULT —
TEST
4 Turn the ignition off.
Disconnect the Automatic Day/Night Mirror harness connectors.
Disconnect the Hands Free Module harness connectors.
Turn the ignition on.
Measure the voltage of each Microphone circuit.
Is the voltage below 1.0 volt for each measurement?
Yes → Go To 5
→ Repair the Microphone circuits for a short to voltage.
No
5 Turn the ignition off.
Disconnect the Automatic Day/Night Mirror harness connectors.
Disconnect the Hands Free Module harness connectors.
Measure the resistance between each Microphone circuit in the Automatic Day/Night
Mirror harness connector.
Is the resistance above 1000 ohms for each measurement?
Yes → Go To 6
→ Refer the Microphone circuits for a short together.
No
6 Replace the Automatic Day/Night Mirror in accordance with the Service Information.
Turn the ignition on.
With the DRBIII , erase DTC's.
Attempt to make a phone call using the system.
With the DRBIII , read DTCs.
Does the DRBIII display this DTC?
Yes → Inspect the wiring and connectors for damage or shorted circuits.
→ Test Complete.
No
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?
Yes → Repair as necessary.
→ Test Complete.
No
ACTION
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Repair as necessary. If ok, replace and program the Hands Free
Module in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Continued
500
APPLICABILITY
All
All
All
All