Symptom List:
MIRROR POWER CIRCUIT SHORT TO GROUND
MIRROR POWER CIRCUIT SHORT TO VOLTAGE
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be MIRROR POWER CIRCUIT
SHORT TO GROUND.
POSSIBLE CAUSES
AUTOMATIC DAY/NIGHT MIRROR
HANDS FREE MICROPHONE HSD FEED OPEN
HANDS FREE MICROPHONE HSD FEED SHORT TO GROUND
HANDS FREE MICROPHONE HSD FEED SHORT TO OTHER CIRCUITS
HANDS FREE MICROPHONE HSD FEED SHORT TO VOLTAGE
HANDS FREE MODULE
INTERMITTENT CONDITION
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, erase DTCs.
Attempt to make a phone call using the system.
With the DRBIIIt, read DTCs.
Does the DRBIIIt display this DTC?
All
Yes → Go To 2
No → Go To 7
2 Turn the ignition off.
Disconnect the Automatic Day/Night Mirror harness connectors.
Disconnect the Hands Free Module harness connector.
Measure the resistance of the Hands Free Microphone HSD Feed.
Is the resistance below 10.0 ohms?
All
Yes → Go To 3
No → Repair the Hands Free Microphone HSD Feed for an open.
Perform BODY VERIFICATION TEST - VER 1.
3 Turn the ignition off.
Disconnect the Automatic Day/Night Mirror harness connectors.
Disconnect the Hands Free Module harness connector.
Measure the resistance between ground and the Hands Free Microphone HSD Feed.
Is the resistance above 1000.0 ohms?
All
Yes → Go To 4
No → Repair the Hands Free Microphone HSD Feed for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
505
TELECOMMUNICATION
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