TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the Rear View Mirror harness connector.
Disconnect the Hands Free Module harness connector.
Turn the ignition on.
Measure the voltage of each Microphone circuit.
Is the voltage below 1.0 volt for each measurement?
All
Yes
→ Go To 5
No
→ Repair the Microphone circuits for a short to voltage.
Perform BODY VERIFICATION TEST - VER 1.
5
Turn the ignition off.
Disconnect the Rear View Mirror harness connector.
Disconnect the Hands Free Module harness connector.
Measure the resistance between each Microphone circuit in the rear view mirror
harness connector.
Is the resistance above 1000 ohms for each measurement?
All
Yes
→ Go To 6
No
→ Refer the Microphone circuits for a short together.
Perform BODY VERIFICATION TEST - VER 1.
6
Replace the Rear View Mirror in accordance with the Service Information.
Turn the ignition on.
With the DRBIII
t, erase DTC’s.
Attempt to make a phone call using the system.
With the DRBIII
t, read DTCs.
Does the DRBIII
t display this DTC?
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
→ Test Complete.
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.
1045
TELECOMMUNICATION
GENERAL MICROPHONE FAULT —
Continued