Diagnostic Procedure
WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE - GENERAL MICROPHONE FAULT
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 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 No --> Go To 7 |
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| 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 No --> Repair the Microphone circuits for an open. Perform BODY VERIFICATION TEST - VER 1 . |
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| 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 No --> Repair the Microphone circuits for a short to ground. Perform BODY VERIFICATION TEST - VER 1 . |
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| 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 No --> Repair the Microphone circuits for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 . |
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| 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 No --> Refer the Microphone circuits for a short together. Perform BODY VERIFICATION TEST - VER 1 . |
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| 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. 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. |
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| 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 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.Perform BODY VERIFICATION TEST - VER 1 .No --> Test Complete. |
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