Jeep Liberty KJ. Manual — part 320
NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS
DIAGNOSIS AND TESTING
8T - 2
NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS
KJ
AMP MESSAGE NOT RECEIVED
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on.
•
Set Condition:
The Hands Free Module does not receive the PCI Bus message from the Amplifier.
Possible Causes
LOST COMMUNICATION WITH AMPLIFIER
HANDS FREE MODULE
Diagnostic Test
1.
ATTEMPT TO COMMUNICATE WITH THE AMPLIFIER
Turn the ignition on.
With the scan tool, attempt to communicate with the Amplifier.
Was the scan tool able to communicate with the Amplifier?
Yes
>> Go To 2
No
>> (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) and
perform the related symptom.
2.
ERASE DTC AND ATTEMPT TO RESET
With the scan tool, erase the HFM DTC’s.
Cycle the ignition switch from off to on and wait approximately 1 minute.
With the scan tool, read the HFM DTC’s.
Did this DTC reset?
Yes
>> 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).
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.
KJ
NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS
8T - 3
AUDIO HARDWARE MESSAGE NOT RECEIVED
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on.
•
Set Condition:
The Hands Free Module does not receive the PCI Bus message from the radio indicating what kind of radio
the vehicle is equipped with.
Possible Causes
LOST COMMUNICATION WITH RADIO
HANDS FREE MODULE
Diagnostic Test
1.
ATTEMPT TO COMMUNICATE WITH THE RADIO
Turn the ignition on.
Turn the radio on.
With the scan tool, attempt to communicate with the radio.
Was the scan tool able to communicate with the radio?
Yes
>> Go To 2
No
>> (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) and
perform the related symptom.
2.
ERASE DTC AND ATTEMPT TO RESET
With the scan tool, erase the HFM DTC’s.
Cycle the ignition switch from off to on and wait approximately 1 minute.
With the scan tool, read the HFM DTC’s.
Did this DTC reset?
Yes
>> 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).
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.
8T - 4
NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS
KJ
BLUETOOTH ERROR
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on.
•
Set Condition:
The Hands Free Module detects a fault during an internal diagnostic check.
Possible Causes
HANDS FREE MODULE
Diagnostic Test
1.
ERASE DTC AND ATTEMPT TO RESET
Turn the ignition on.
With the scan tool, read and record the HFM DTC’s and then erase the DTC’s.
Perform 5 ignition key cycles, leaving the ignition key on for a minimum of 90 seconds per cycle.
With the scan tool, read the HFM DTC’s.
Did this DTC reset?
Yes
>> 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).
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.
KJ
NAVIGATION/TELECOMMUNICATION - ELECTRICAL DIAGNOSTICS
8T - 5
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