Jeep Grand Cherokee WK. Manual — part 1276
B210D-BATTERY VOLTAGE LOW (CONTINUED)
4.
(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 5
No
>> Repair the (Z907) Ground circuit for an open circuit or high
resistance.
5.
STEERING COLUMN MODULE (SCM)
View repair.
Repair
Replace the Steering Column Module (SCM) in accordance with the Service Information.
6.
INTERMITTENT BATTERY VOLTAGE 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
B210E-BATTERY VOLTAGE HIGH
For a complete wiring diagram Refer to Section 8W
•
When Monitored:
Continuously.
•
Set Condition:
If the voltage to the Steering Column Module (SCM) is above 16.5 volts for more than one minute.
Possible Causes
RELATED DTC(S) PRESENT IN THE PCM
INTERMITTENT BATTERY VOLTAGE HIGH DTC
(A108) FUSED B(+) CIRCUIT HIGH RESISTANCE
(Z907) GROUND CIRCUIT HIGH RESISTANCE
STEERING COLUMN MODULE (SCM)
Diagnostic Test
1.
RELATED DTC(S) PRESENT IN THE 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 symptom in the Driveability category.
No
>> Go to 2
2.
DTC IS ACTIVE
Start the engine. Allow the engine to idle for 2 minutes.
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 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 high resistance in the (A108) Fused B(+)
circuit.
WK
COLUMN - ELECTRICAL DIAGNOSTICS
19 - 19
B210E-BATTERY VOLTAGE HIGH (CONTINUED)
4.
(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 5
No
>> Repair the high resistance in the (Z907) Ground circuit.
5.
STEERING COLUMN MODULE (SCM)
View repair.
Repair
Replace the Steering Column Module (SCM) in accordance with the Service Information.
6.
INTERMITTENT BATTERY VOLTAGE 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
B2225–STEERING COLUMN MODULE INTERNAL
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
Continuously.
•
Set Condition:
The Steering Column Module (SCM) detects an internal error.
Possible Causes
STEERING COLUMN MODULE (SCM)
Diagnostic Test
1.
STEERING COLUMN MODULE (SCM)
The Steering Column Module (SCM) is reporting an internal error.
View repair.
Repair
Replace the Steering Column Module (SCM) in accordance with the Service Information.
WK
COLUMN - ELECTRICAL DIAGNOSTICS
19 - 21
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