Jeep Grand Cherokee WK. Manual — part 279
B212A-PTS DISPLAY SUPPLY VOLTAGE LOW (CONTINUED)
2.
CHECK PARK ASSIST MODULE FOR AN INTERNAL SHORT TO GROUND
Turn the ignition off.
Disconnect the Park Assist Module harness connector.
Measure the resistance between ground and the (X777) Park Assist
Display Supply circuit.
Is the resistance below 10K ohms?
Yes
>> Go To 3
No
>> Replace the Park Assist Module in accordance with the
service information.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE)
3.
CHECK THE (X777) PARK ASSIST DISPLAY SUPPLY CIRCUIT FOR A SHORT TO THE (Z171) PARK
ASSIST DISPLAY GROUND CIRCUIT
Disconnect the Park Assist Display harness connector.
Measure the resistance between the (X777) Park Assist Display Sup-
ply circuit and the (Z171) Park Assist Display Ground circuit.
Is the resistance below 10K ohms?
Yes
>> Repair the (X777) Park Assist Display Supply circuit for a
short to the (Z171) Park Assist Display Ground circuit.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE)
No
>> Go To 4
8B - 42
CHIME/BUZZER - ELECTRICAL DIAGNOSTICS
WK
B212A-PTS DISPLAY SUPPLY VOLTAGE LOW (CONTINUED)
4.
CHECK THE (X777) PARK ASSIST DISPLAY SUPPLY CIRCUIT FOR A SHORT TO THE (Z913) PARK
ASSIST MODULE GROUND CIRCUIT
Measure the resistance between the (X777) Park Assist Display Sup-
ply circuit and the (Z913) Park Assist Module Ground circuit.
Is the resistance below 10K ohms?
Yes
>> Repair the (X777) Park Assist Display Supply circuit for a
short to the (Z913) Park Assist Module Ground circuit.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE)
No
>> Go To 5
5.
CHECK THE (X777) PARK ASSIST DISPLAY SUPPLY CIRCUIT FOR A SHORT TO THE (X750) PARK
ASSIST SENSOR GROUND CIRCUIT
Measure the resistance between the (X777) Park Assist Display Sup-
ply circuit and the (X750) Park Assist Sensor Ground circuit.
Is the resistance below 10K ohms?
Yes
>> Repair the (X777) Park Assist Display Supply circuit for a
short to the (X750) Park Assist Sensor Ground circuit.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE)
No
>> Go To 6
WK
CHIME/BUZZER - ELECTRICAL DIAGNOSTICS
8B - 43
B212A-PTS DISPLAY SUPPLY VOLTAGE LOW (CONTINUED)
6.
CHECK THE (X777) PARK ASSIST DISPLAY SUPPLY CIRCUIT FOR A SHORT TO GROUND
Measure the resistance between ground and the (X777) Park Assist
Display Supply circuit.
Is the resistance below 10K ohms?
Yes
>> Repair the (X777) Park Assist Display Supply circuit for a
short to ground.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE)
No
>> Replace the Park Assist Display in accordance with the
service information.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8
- ELECTRICAL/ELECTRONIC CONTROL MODULES -
STANDARD PROCEDURE)
8B - 44
CHIME/BUZZER - ELECTRICAL DIAGNOSTICS
WK
B222A-VEHICLE LINE MISMATCH
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on.
•
Set Condition:
If the Vehicle Line data transmitted on the CAN B bus doesn’t correspond with the data stored in the Park
Assist Module.
Possible Causes
PARK ASSIST MODULE
Diagnostic Test
1.
CHECK VEHICLE LINE IN THE PCM
With the scan tool, compare the vehicle line that is programmed in to the PCM to the vehicle line of the vehicle.
Does the vehicle line programmed into the PCM match the vehicle?
Yes
>> Replace the Park Assist 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 caused this code to set is not present at this time. Check for an intermittent condition
by inspecting the related wiring harness for chaffed, pierced, pinched, and partially broken wires. Also
inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated termi-
nals.
Perform (NGC) POWERTRAIN VERIFICATION TEST (Refer to 9 - ENGINE - STANDARD PROCE-
DURE)
WK
CHIME/BUZZER - ELECTRICAL DIAGNOSTICS
8B - 45
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