General Microphone Fault - Dodge Ram 2004 Service Manual

Symptom:

GENERAL MICROPHONE FAULT

AUTOMATIC DAY/NIGHT MIRROR
HANDS FREE MODULE
MICROPHONE CIRCUITS OPEN
MICROPHONE CIRCUITS SHORT TO GROUND
MICROPHONE CIRCUITS SHORT TO VOLTAGE
MICROPHONE CIRCUITS SHORTED TOGETHER
INTERMITTENT CONDITION
TEST
1 Turn the ignition on.
With the DRBIII , erase DTCs.
Attempt to make a phone call using the system.
With the DRBIII , read DTCs.
Does the DRBIII display this DTC?
Yes → Go To 2
→ Go To 7
No
2 Turn the ignition off.
Disconnect the Automatic Day/Night Mirror harness connectors.
Disconnect the Hands Free Module harness connectors.
Measure the resistance of each Microphone circuit between the HFM connector and
the Automatic Day/Night Mirror connector.
Is the resistance below 10.0 ohms for each measurement?
Yes → Go To 3
→ Repair the Microphone circuits for an open.
No
3 Turn the ignition off.
Disconnect the Automatic Day/Night Mirror harness connectors.
Disconnect the Hands Free Module harness connectors.
Measure the resistance between ground and each Microphone circuit.
Is the resistance above 1000.0 ohms for each measurement?
Yes → Go To 4
→ Repair the Microphone circuits for a short to ground.
No
POSSIBLE CAUSES
ACTION
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
TELECOMMUNICATION
499
APPLICABILITY
All
All
All