Jeep Grand Cherokee WK. Manual - part 332
*NO RESPONSE FROM ESM (SHIFT LEVER ASSEMBLY) - NAG1/DIESEL (CONTINUED)
For a complete wiring diagram Refer to Section 8W.
Possible Causes
(Z907) GROUND CIRCUIT OPEN
(F1) FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN OR SHORTED
(D65) CAN C BUS (+) CIRCUIT OPEN
(D64) CAN C BUS (-) CIRCUIT OPEN
SHIFT LEVER ASSEMBLY
Diagnostic Test
1.
TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
NOTE: Ensure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts.
With the scan tool, select ECU view.
NOTE: A red X will be next to the module that is not communicating, indicating that the module is not active
on the Bus network. A green check indicates that the module is active on the Bus network.
NOTE: Check the FCM for any active CAN C hardware and any ignition related DTCs, perform DTCs before
proceeding.
Does the scan tool display a red X next to the module?
Yes
>> Go To 2
No
>> The no response condition is not present at this time. 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.
(Z907) GROUND CIRCUIT OPEN
Turn the ignition off.
Disconnect the Shift Lever Assembly harness connector.
Using a 12-volt test light connected to 12-volts, check the (Z907)
ground circuit.
Does the test light illuminate brightly?
Yes
>> Go To 3
No
>> Repair the (Z907) ground circuit for an open.
Perform NAG1/Diesel TRANSMISSION VERIFICATION
TEST - VER 1.
8E - 174
ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
WK