Jeep Liberty KJ. Manual — part 1107
5.
CHECK (G94) DYNAMICS SENSOR GROUND CIRCUIT FOR HIGH RESISTANCE
Measure the resistance of the (G94) Dynamics Sensor Ground 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 6
No
>> Repair the (G94) Dynamics Sensor Ground circuit for high
resistance.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 -
BRAKES - STANDARD PROCEDURE).
6.
CHECK (G4) DYNAMICS SENSOR SUPPLY CIRCUIT FOR A SHORT TO OTHER ABS CIRCUITS
Measure the resistance between the (G4) Dynamics Sensor Supply cir-
cuit and the B46, B15, D21, D65, D64, Z127, D52, D51, G94, B6, B7,
B4. B3, B1, B2, B9, B8, and Z107 circuit in the Anti-Lock Brakes Mod-
ule harness connector.
Is the resistance below 10k ohms on any of the circuits?
Yes
>> Repair all circuits with a resistance below 10k ohms for a
short to the (G4) Dynamics Sensor Supply circuit.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 -
BRAKES - STANDARD PROCEDURE).
No
>> Replace the Anti-Lock Brakes Module in accordance with
the Service Information.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 -
BRAKES - STANDARD PROCEDURE).
5 - 188
BRAKES - ABS ELECTRICAL DIAGNOSTICS
KJ
C2115–DYNAMICS SENSOR SUPPLY VOLTAGE HIGH
For a complete wiring diagram Refer to Section 8W.
KJ
BRAKES - ABS ELECTRICAL DIAGNOSTICS
5 - 189
•
When Monitored:
Upon ignition on, prior to switching the (G4) Dynamics Sensor Supply circuit power on.
•
Set Condition:
If the Anti-Lock Brakes Module detects voltage on the (G4) Dynamics Sensor Supply circuit when the circuit’s
power is turned off.
Possible Causes
WIRING HARNESS, TERMINAL, CONNECTOR DAMAGE
(G4) DYNAMICS SENSOR SUPPLY CIRCUIT SHORTED TO VOLTAGE
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
3.
CHECK (G4) DYNAMICS SENSOR SUPPLY CIRCUIT SHORT FOR A SHORT TO VOLTAGE
Disconnect the Anti-Lock Brakes Module harness connector.
Turn the ignition on.
Measure the voltage of the (G4) Dynamics Sensor Supply Circuit.
Is the voltage above 0.2 volts?
Yes
>> Repair the (G4) Dynamics Sensor Supply Circuit for a short
to voltage.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 -
BRAKES - STANDARD PROCEDURE).
No
>> Replace the Anti-Lock Brakes Module in accordance with
the Service Information.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 -
BRAKES - STANDARD PROCEDURE).
5 - 190
BRAKES - ABS ELECTRICAL DIAGNOSTICS
KJ
C2116–ABS PUMP MOTOR SUPPLY LOW VOLTAGE
For a complete wiring diagram Refer to Section 8W.
KJ
BRAKES - ABS ELECTRICAL DIAGNOSTICS
5 - 191
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