Jeep Grand Cherokee WK. Manual — part 1275
B2108–IGNITION SWITCH SENSE INPUT CIRCUIT LOW (CONTINUED)
3.
(Z907) GROUND CIRCUIT HIGH RESISTANCE
Using a 12–volt test light connected to 12–volts, check the (Z907)
Ground circuit in the Steering Column Module harness connector.
NOTE: The test light must illuminate brightly. Compare the bright-
ness to that of a direct connection to the battery.
Does the test light illuminate brightly?
Yes
>> Go To 4
No
>> Repair the (Z907) Ground circuit for an open circuit or high
resistance.
4.
STEERING COLUMN MODULE (SCM)
View repair.
Repair
Replace the Steering Column Module (SCM) in accordance with the Service Information.
5.
INTERMITTENT IGNITION SWITCH SENSE INPUT CIRCUIT LOW DTC
The conditions necessary to set this DTC are not present at this time.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors.
Look for the data to change or for the DTC to reset during the wiggle test.
Were any problems found?
Yes
>> Repair as necessary.
No
>> Test complete.
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COLUMN - ELECTRICAL DIAGNOSTICS
WK
B2109–IGNITION SWITCH SENSE INPUT CIRCUIT HIGH
For a complete wiring diagram Refer to Section 8W
•
When Monitored:
Continuously.
•
Set Condition:
The Steering Column Module (SCM) detects that the Ignition Switch Sense circuit is open for more than 5
seconds.
Possible Causes
INTERMITTENT IGNITION SWITCH SENSE INPUT CIRCUIT HIGH DTC
(G20) IGNITION SWITCH SENSE CIRCUIT OPEN OR HIGH RESISTANCE
(Z907) GROUND CIRCUIT OPEN OR HIGH RESISTANCE
STEERING COLUMN MODULE (SCM)
Diagnostic Test
1.
DTC STATUS IS ACTIVE
Turn the ignition on.
With the scan tool, select View DTCs in the Steering Column Module.
Is the DTC status Active at this time?
Yes
>> Go to 2
No
>> Go to 5
2.
(G20) IGNITION SWITCH SENSE CIRCUIT OPEN OR HIGH RESISTANCE
Turn the ignition off.
Disconnect the Steering Column Module harness connector.
Turn the ignition on.
Using a 12–volt test light connected to ground, check the (G20) Igni-
tion Switch Sense circuit in the Steering Column Module harness con-
nector.
NOTE: The test light must illuminate brightly. Compare the bright-
ness to that of a direct connection to the battery.
Does the test light illuminate brightly?
Yes
>> Repair the (G20) Ignition Switch Sense circuit for an open
circuit or high resistance.
No
>> Go to 3
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COLUMN - ELECTRICAL DIAGNOSTICS
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B2109–IGNITION SWITCH SENSE INPUT CIRCUIT HIGH (CONTINUED)
3.
(Z907) GROUND CIRCUIT OPEN OR HIGH RESISTANCE
Turn the ignition off.
Using a 12–volt test light connected to 12–volts, check the (Z907)
Ground circuit in the Steering Column Module harness connector.
NOTE: The test light must illuminate brightly. Compare the bright-
ness to that of a direct connection to the battery.
Does the test light illuminate brightly?
Yes
>> Go To 4
No
>> Repair the (Z907) Ground circuit for an open circuit or high
resistance.
4.
STEERING COLUMN MODULE (SCM)
View repair.
Repair
Replace the Steering Column Module (SCM) in accordance with the Service Information.
5.
INTERMITTENT IGNITION SWITCH SENSE INPUT CIRCUIT HIGH DTC
The conditions necessary to set this DTC are not present at this time.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors.
Look for the data to change or for the DTC to reset during the wiggle test.
Were any problems found?
Yes
>> Repair as necessary.
No
>> Test complete.
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COLUMN - ELECTRICAL DIAGNOSTICS
WK
B210D-BATTERY VOLTAGE LOW
For a complete wiring diagram Refer to Section 8W
•
When Monitored:
Continuously.
•
Set Condition:
If the voltage to the Steering Column Module (SCM) is below 9 volts for more than one minute.
Possible Causes
RELATED DTC(S) PRESENT IN PCM
INTERMITTENT BATTERY VOLTAGE LOW DTC
(A108) FUSED B(+) CIRCUIT OPEN OR HIGH RESISTANCE
(Z907) GROUND CIRCUIT OPEN OR HIGH RESISTANCE
STEERING COLUMN MODULE (SCM)
Diagnostic Test
1.
RELATED DTC(S) PRESENT IN PCM
Ignition on, engine not running.
With the scan tool, select View DTCs in the Powertrain Control Module.
Are there any charging system or related battery voltage DTCs present in the PCM?
Yes
>> Refer to the appropriate diagnostic procedure in the Driveability category.
No
>> Go to 2
2.
DTC STATUS IS ACTIVE
With the scan tool, select View DTCs in the Steering Column Module.
Is the DTC status Active at this time?
Yes
>> Go to 3
No
>> Go to 6
3.
(A108) FUSED B(+) CIRCUIT OPEN OR HIGH RESISTANCE
Turn the ignition off.
Disconnect the Steering Column Module harness connector.
Turn the ignition on.
Using a 12–volt test light connected to ground, check the (A108)
Fused B(+) circuit in the Steering Column Module harness connector.
NOTE: The test light must illuminate brightly. Compare the bright-
ness to that of a direct connection to the battery.
Does the test light illuminate brightly?
Yes
>> Go to 4
No
>> Repair the (A108) Fused B(+) circuit for an open circuit or
high resistance.
WK
COLUMN - ELECTRICAL DIAGNOSTICS
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