Jeep Liberty KJ. Manual — part 334
4.
(X140) AUDIO RETURN CIRCUIT OPEN
Measure the resistance of the (X140) Audio Return circuit between the
HFM connector and the radio connector.
Is the resistance below 5.0 ohms?
Yes
>> Go To 5
No
>> Repair the (X140) Audio Return circuit for an open.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL MODULES
-
STANDARD PROCEDURE).
5.
(X40) AUDIO MUX RIGHT CIRCUIT SHORT TO (X140) AUDIO RETURN CIRCUIT
Measure the resistance between the (X40) Audio MUX Right circuit and the (X140) Audio Return circuit.
Is the resistance below 5.0 ohms?
Yes
>> Repair the (X40) Audio MUX Right circuit for a short to the (X140) Audio Return circuit.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
No
>> Inspect the wiring and connectors for damage or shorted circuits. If ok, replace and program the Hands
Free Module in accordance with the service information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
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NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS
KJ
RIGHT AUDIO OUTPUT 1 SHORT TO VOLTAGE
For a complete wiring diagram Refer to Section 8W.
KJ
NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS
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•
When Monitored:
With the ignition on.
•
Set Condition:
The Hands Free Module detects high voltage on the (X40) Audio MUX Right circuit.
Possible Causes
(X40) AUDIO MUX RIGHT CIRCUIT OPEN
(X140) AUDIO RETURN CIRCUIT OPEN
(X40) AUDIO MUX RIGHT CIRCUIT SHORT TO VOLTAGE
HANDS FREE MODULE
Diagnostic Test
1.
CHECK FOR ACTIVE DTC
Turn the ignition on.
With the scan tool, erase the HFM DTCs.
Attempt to make a phone call using the system.
With the scan tool, read the HFM DTCs.
Did this DTC reset?
Yes
>> Go To 2
No
>> The condition that set this DTC is no longer present. Using the wiring diagram/schematic as a guide,
inspect the wiring for chafed, pierced, pinched, and partially broken wires and the wiring harness con-
nectors for broken, bent, pushed out, and corroded terminals.
2.
(X40) AUDIO MUX RIGHT CIRCUIT OPEN
Turn the ignition off.
Disconnect the Hands Free Module harness connector.
Disconnect the Radio C2 harness connector.
Measure the resistance of the (X40) Audio MUX Right circuit between the HFM connector and the radio connector.
Is the resistance below 5.0 ohms?
Yes
>> Go To 3
No
>> Repair the (X40) Audio MUX Right circuit for an open
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
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NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS
KJ
3.
(X140) AUDIO RETURN CIRCUIT OPEN
Measure the resistance of the (X140) Audio Return circuit between the
HFM connector and the radio connector.
Is the resistance below 5.0 ohms?
Yes
>> Go To 4
No
>> Repair the (X140) Audio Return circuit for an open.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL MODULES
-
STANDARD PROCEDURE).
4.
(X40) AUDIO MUX RIGHT CIRCUIT SHORT TO VOLTAGE
Turn the ignition on.
Measure the voltage of the (X40) Audio MUX Right circuit.
Is the voltage above 1.0 volts?
Yes
>> Repair the (X40) Audio MUX Right circuit for a short to voltage.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
No
>> Inspect the wiring and connectors for damage or shorted circuits. If ok, replace and program the Hands
Free Module in accordance with the service information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
KJ
NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS
8T - 61
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