Jeep Grand Cherokee WK. Manual — part 685
B2102-IGNITION RUN/START INPUT HIGH (CONTINUED)
3.
FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT SHORTED TO BATTERY VOLTAGE
NOTE: A dirty (partial) ground can cause abnormal conditions within a system. Ensure the module has a
good ground before continuing.
Turn the ignition off.
Disconnect the SKREEM harness connector.
Using a 12 volt test light connected to ground, probe the Fused Ignition Switch Output (Run-Start) circuit in the
SKREEM harness connector.
Does the test light illuminate brightly?
Yes
>> Repair the Fused Ignition Switch Output (Run-Start) circuit for a short to voltage.
Perform SKREEM VERIFICATION TEST. (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECURITY -
STANDARD PROCEDURE)
No
>> Replace and program the SKREEM in accordance with the Service Information.
Perform SKREEM VERIFICATION TEST. (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECURITY -
STANDARD PROCEDURE)
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VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS
WK
B210A-SYSTEM VOLTAGE LOW
WK
VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS
8Q - 57
B210A-SYSTEM VOLTAGE LOW (CONTINUED)
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition switch on.
•
Set Condition:
The SKREEM has detected the system voltage is below a calibrated value.
Possible Causes
FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT OPEN
FUSED (B+) CIRCUIT OPEN
SKREEM
Diagnostic Test
1.
DETERMINING IF DTC IS CURRENT
NOTE: Diagnose any related Powertrain DTC(s) before continuing.
With a scan tool, read and record DTC(s).
With the scan tool, clear DTC(s).
Perform 5 ignition cycles, leaving the ignition switch on for a minimum of 90 seconds per cycle.
Using the scan tool, read DTC(s).
Does the DTC reset?
Yes
>> Go To 3
No
>> Go to 2
2.
INTERMITTENT CONDITION
NOTE: Check for any of the follow conditions:
•
Poor wire to terminal connection
•
Corroded terminals
•
Backed out or loose terminals
•
Broken wire internal to the insulation
•
Dirty (partial) module ground
With the ignition on, wiggle the related wires.
Using a scan tool, read DTC(s).
Does the DTC reset?
Yes
>> Repair the wiring as necessary.
Perform SKREEM VERIFICATION TEST. (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECURITY -
STANDARD PROCEDURE)
No
>>
DTC is not active at this time. Test complete.
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VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS
WK
B210A-SYSTEM VOLTAGE LOW (CONTINUED)
3.
FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT OPEN
NOTE: Check the related fuses to the Fused Ignition Switch Out-
put (Run-Start) circuit. If the fuse is found to be open repair the
circuit for a shorted condition.
Turn the ignition off.
Disconnect the SKREEM harness connector.
Turn the ignition on.
Using a 12 volt test light connected to ground, probe the Fused Igni-
tion Switch Output (Run-Start) circuit in the SKREEM harness connec-
tor.
Does the test light illuminate brightly?
Yes
>> Go to 4
No
>> Repair the Fused Ignition Switch Output (Run-Start) circuit
for an open.
Perform SKREEM VERIFICATION TEST. (Refer to 8 -
ELECTRICAL/VEHICLE THEFT SECURITY - STANDARD
PROCEDURE)
4.
FUSED (B+) CIRCUIT OPEN
Turn the ignition off.
Using a 12 volt test light connected to ground, probe the Fused (B+)
circuit in the SKREEM harness connector.
Does the test light illuminate brightly?
Yes
>> Go to 5
No
>> Repair the Fused (B+) circuit for an open.
Perform SKREEM VERIFICATION TEST. (Refer to 8 -
ELECTRICAL/VEHICLE THEFT SECURITY - STANDARD
PROCEDURE)
WK
VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS
8Q - 59
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