Jeep Grand Cherokee WK. Manual — part 313
U0164-LOST COMMUNICATION WITH HVAC CONTROL MODULE (CONTINUED)
4.
CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCS
With the scan tool, select Network Diagnostics.
Is there more than one module with active DTCs “Logged Against” the HVAC?
Yes
>> Replace/update the A/C Heater Control in accordance with the service information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
No
>> Replace/update the module that set the DTC in accordance with the service information
Perform the appropriate VERIFICATION TEST.
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ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
WK
U0167-LOST COMMUNICATION WITH INTRUSION TRANSCEIVER CONTROL
MODULE
WK
ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
8E - 99
U0167-LOST COMMUNICATION WITH INTRUSION TRANSCEIVER CONTROL MODULE (CONTINUED)
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
•
With the ignition on
•
Battery voltage between 10 and 16 volts
•
IOD fuse installed
•
FCM is configured correctly
•
Set Condition:
Bus messages not received from the Intrusion Transceiver Control Module (ITM) for approximately 2 to 5 sec-
onds.
Possible Causes
CAN B BUS CIRCUITS OPEN OR SHORTED
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
FCM NOT CONFIGURED CORRECTLY
INTRUSION TRANSCEIVER CONTROL MODULE POWER AND GROUND
INTRUSION TRANSCEIVER CONTROL MODULE
MODULE THAT SET THIS DTC
Diagnostic Test
1.
VERIFY DTC IS ACTIVE
NOTE: Ensure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.
With the scan tool, read active DTCs.
Is this DTC active?
Yes
>> Go To 2
No
>> Refer to the Stored Lost Communication test procedure. Refer to the table of contents in this section.
2.
CHECK FOR ANY OF THE FOLLOWING ACTIVE DTCS
With the scan tool, read active DTCs from all modules.
NOTE: Check for FCM configuration, CAN B or C hardware electrical, VIN Missing/Mismatch, battery or igni-
tion related DTCs.
Does the scan tool display any active DTCs to the conditions listed above?
Yes
>> Diagnose and repair the DTC. Refer to the Index for a complete list of the symptoms.
No
>> Go To 3
3.
VERIFY THAT THE ITM IS ACTIVE ON THE BUS
Turn the ignition on.
With the scan tool, select Network Diagnostics.
Verify that the ITM is active on the bus.
Is the ITM active on the bus?
Yes
>> Go To 4
No
>> Refer to the No Response test procedure. Refer to the table of contents in this section.
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ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
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U0167-LOST COMMUNICATION WITH INTRUSION TRANSCEIVER CONTROL MODULE (CONTINUED)
4.
CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCS
With the scan tool, select Network Diagnostics.
Is there more than one module with active DTCs “Logged Against” the ITM?
Yes
>> Replace/update the Intrusion Transceiver Control Module in accordance with the service information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
No
>> Replace/update the module that set the DTC in accordance with the service information
Perform the appropriate VERIFICATION TEST.
WK
ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
8E - 101
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