Jeep Liberty KJ. Manual — part 1106
C2112–SENSOR SUPPLY 1 VOLTAGE CIRCUIT HIGH
For a complete wiring diagram Refer to Section 8W
•
When Monitored:
With the ignition on.
•
Set Condition:
If the Anti-Lock Brakes Module detects that the supply voltage for external analog sensors is out of range.
Possible Causes
ANTI-LOCK BRAKES MODULE
PRESSURE SENSOR (HYDRAULIC CONTROL UNIT)
Diagnostic Test
1.
REPLACE ANTI-LOCK BRAKES MODULE & VERIFY IF DTC IS STILL ACTIVE
Turn the ignition off.
Replace the Anti-Lock Brakes Module in accordance with the Service Information.
Turn the ignition on.
With the scan tool, read ABS DTCs.
Does this DTC reset?
Yes
>> Replace the Hydraulic Control Unit in accordance with the Service Information.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
No
>> Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
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BRAKES - ABS ELECTRICAL DIAGNOSTICS
KJ
C2114–DYNAMICS SENSOR SUPPLY VOLTAGE LOW
For a complete wiring diagram Refer to Section 8W.
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BRAKES - ABS ELECTRICAL DIAGNOSTICS
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•
When Monitored:
With the ignition on.
•
Set Condition:
If the Dynamics Sensor status changes from initialized to not initialized due to low voltage on the (G4) Dynam-
ics Sensor Supply circuit.
Possible Causes
WIRING HARNESS, TERMINAL, CONNECTOR DAMAGE
(G4) DYNAMICS SENSOR SUPPLY CIRCUIT HIGH RESISTANCE
(G94) DYNAMICS SENSOR GROUND CIRCUIT HIGH RESISTANCE
(G4) DYNAMICS SENSOR SUPPLY CIRCUIT SHORTED TO OTHER ABS CIRCUITS
DYNAMICS SENSOR
ANTI-LOCK BRAKES MODULE
1.
VERIFY DTC IS ACTIVE
Turn the ignition on.
With the scan tool, read and record ABS DTCs.
With the scan tool, read and record Environmental Data (EV Data).
With the scan tool, erase ABS DTCs.
Cycle the ignition switch.
With the scan tool, read ABS DTCs.
Does this DTC reset?
Yes
>> Go To 2
No
>> Perform the ABS Intermittent Condition diagnostic procedure in this Section.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
2.
INSPECT RELATED WIRING HARNESS, TERMINALS, & CONNECTORS
Turn the ignition off.
Check all related wiring for pinched, chafed, pierced, and partially broken wires.
Check all related connectors for broken, bent, pushed out, and corroded terminals.
Were any problems found?
Yes
>> Repair as necessary.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
No
>> Go To 3
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BRAKES - ABS ELECTRICAL DIAGNOSTICS
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3.
CHECK (G4) DYNAMICS SENSOR SUPPLY CIRCUIT & (G94) DYNAMICS SENSOR GROUND CIRCUIT
FUNCTION
Disconnect the Dynamics Sensor harness connector.
Turn the ignition on.
Measure the voltage between the (G4) Dynamics Sensor Supply Circuit
and the (G94) Dynamics Sensor Ground Circuit.
Is the voltage above 11.0 volts?
Yes
>> Replace the Dynamics Sensor in accordance with the Ser-
vice Information.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 -
BRAKES - STANDARD PROCEDURE).
No
>> Go To 4
4.
CHECK (G4) DYNAMICS SENSOR SUPPLY CIRCUIT FOR HIGH RESISTANCE
Turn the ignition off.
Disconnect the Anti-Lock Brakes Module harness connector.
Measure the resistance of the (G4) Dynamics Sensor Supply circuit
between the Dynamics Sensor harness connector and the Anti-Lock
Brakes Module harness connector.
Is the resistance below 5.0 ohms?
Yes
>> Go To 5
No
>> Repair the (G4) Dynamics Sensor Supply circuit for high
resistance.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 -
BRAKES - STANDARD PROCEDURE).
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BRAKES - ABS ELECTRICAL DIAGNOSTICS
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