Jeep Grand Cherokee WK. Manual — part 342
*NO RESPONSE FROM PCM (POWERTRAIN CONTROL MODULE) (CONTINUED)
3.
(Z816) (Z130) GROUND CIRCUIT OPEN
Using a 12-volt test light connected to 12-volts, check each (Z816) and
(Z130) ground circuit.
Does the test light illuminate brightly for each circuit?
Yes
>> Go To 4
No
>> Repair the ground circuit for an open.
Perform (NGC) POWERTRAIN VERIFICATION TEST VER
- 5.
4.
(F26) (F942) FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN OR SHORTED
Turn the ignition on.
Using a 12-volt test light connected to ground, check each (F26) and
(F942) Fused Ignition Switch Output circuit.
Does the test light illuminate brightly for each circuit?
Yes
>> Go To 5
No
>> Repair the Fused Ignition Switch Output circuit for an open
or short.
Perform (NGC) POWERTRAIN VERIFICATION TEST VER
- 5.
8E - 214
ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
WK
*NO RESPONSE FROM PCM (POWERTRAIN CONTROL MODULE) (CONTINUED)
5.
(D65) CAN C BUS (+) CIRCUIT OPEN
Turn the ignition off.
Disconnect the FCM C1 harness connector.
Measure the resistance of the (D65) CAN C Bus (+) circuit between
the FCM connector and the appropriate terminal of the special tool
#8815.
Is the resistance below 5.0 ohms?
Yes
>> Go To 6
No
>> Repair the (D65) CAN C Bus (+) circuit for an open.
Perform (NGC) POWERTRAIN VERIFICATION TEST VER
- 5.
WK
ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
8E - 215
*NO RESPONSE FROM PCM (POWERTRAIN CONTROL MODULE) (CONTINUED)
6.
(D64) CAN C BUS (-) CIRCUIT OPEN
Measure the resistance of the (D64) CAN C Bus (-) circuit between
the FCM connector and the appropriate terminal of the special tool
#8815.
Is the resistance below 5.0 ohms?
Yes
>> Replace and program the Powertrain Control Module in
accordance with the service information.
Perform (NGC) POWERTRAIN VERIFICATION TEST VER
- 5.
No
>> Repair the (D64) CAN C Bus (-) circuit for an open.
Perform (NGC) POWERTRAIN VERIFICATION TEST VER
- 5.
8E - 216
ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
WK
*NO RESPONSE FROM PDM (PASSENGER MEMORY MIRROR MODULE)
WK
ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
8E - 217
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