TEST ACTION APPLICABILITY
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?
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 Automatic Day/Night Mirror harness connectors.
Disconnect the Hands Free Module harness connectors.
Measure the resistance between each Microphone circuit in theAutomatic Day/Night
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 theAutomatic Day/Night Mirrorin accordance with the Service Information.
Turn the ignition on.
With the DRBIIIt, erase DTC’s.
Attempt to make a phone call using the system.
With the DRBIIIt, read DTCs.
Does the DRBIIIt 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 inspectthe related wiringharness 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.
500
TELECOMMUNICATION
GENERAL MICROPHONE FAULT — Continued
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