Jeep Grand Cherokee WK. Manual — part 179
C2115-SENSOR CLUSTER SUPPLY VOLTAGE HIGH (CONTINUED)
3.
CHECK THE VOLTAGE ON THE (G4) SENSOR CLUSTER SUPPLY CIRCUIT
WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands
near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in
personal injury or death.
Turn the ignition off.
Disconnect the Sensor Cluster harness connector.
Start the engine.
Raise engine speed above 1800 RPM.
Measure the voltage of the (G4) Sensor Cluster Supply Circuit.
Is the voltage above 17 volts?
Yes
>> Go To 4
No
>> Go To 7
4.
CHECK THE VOLTAGE ON THE FUSED B(+) CIRCUITS
WARNING: When the engine is operating, do not stand in direct
line with the fan. Do not put your hands near the pulleys, belts, or
fan. Do not wear loose clothing. Failure to follow these instruc-
tions can result in personal injury or death.
Turn the ignition off.
Disconnect the Anti-Lock Brake Module harness connector.
Start the engine.
Raise engine speed above 1800 RPM.
Measure the voltage of the (A107) and the (A200) Fused B(+) circuits.
Is the voltage above 17 volts?
Yes
>> Refer to appropriate Service Information for Charging Sys-
tem testing and repair.
Perform ABS VERIFICATION TEST - VER 1.
No
>> Go To 5
5.
(G4) SENSOR CLUSTER SUPPLY CIRCUIT SHORT TO GROUND
Turn the ignition off.
Measure the resistance between ground and the (G4) Sensor Cluster
Supply circuit.
Is the resistance below 5.0 ohms?
Yes
>> Repair the (G4) Sensor Cluster Supply circuit for a short to
ground.
Perform ABS VERIFICATION TEST - VER 1.
No
>> Go To 6
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BRAKES - BRAKE CONTROLLER ELECTRICAL DIAGNOSTICS
WK
C2115-SENSOR CLUSTER SUPPLY VOLTAGE HIGH (CONTINUED)
6.
(G4) SENSOR CLUSTER SUPPLY CIRCUIT SHORT TO VOLTAGE
Turn the ignition on.
Measure the voltage of the (G4) Sensor Cluster Supply circuit.
Is there any voltage present?
Yes
>> Repair the (G4) Sensor Cluster Supply circuit for a short to
voltage.
Perform ABS VERIFICATION TEST - VER 1.
No
>> Go To 7
7.
SENSOR CLUSTER
Turn the ignition off.
If necessary, disconnect the Sensor Cluster harness connector.
If necessary, connect the Anti-Lock Brake Module harness connector.
Measure the resistance between the (G94) Sensor Cluster Ground Cir-
cuit at the Sensor Cluster harness connector and ground.
Is the resistance below 5.0 ohms?
Yes
>> Replace the Sensor Cluster in accordance with the Ser-
vice Information.
Perform ABS VERIFICATION TEST - VER 1.
No
>> Go To 8
8.
(G94) SENSOR CLUSTER GROUND CIRCUIT SHORT TO VOLTAGE
Turn the ignition off.
Disconnect the Anti-Lock Brake Module harness connector.
Turn the ignition on.
Measure the voltage of the (G94) Sensor Cluster Ground circuit.
Is there any voltage present?
Yes
>> Repair the (G94) Sensor Cluster Ground circuit for a short
to voltage.
Perform ABS VERIFICATION TEST - VER 1.
No
>> Go To 9
WK
BRAKES - BRAKE CONTROLLER ELECTRICAL DIAGNOSTICS
5 - 343
C2115-SENSOR CLUSTER SUPPLY VOLTAGE HIGH (CONTINUED)
9.
(G94) SENSOR CLUSTER GROUND CIRCUIT OPEN
Turn the ignition off.
Measure the resistance of the (G94) Sensor Cluster Ground circuit
Is the resistance below 5.0 ohms?
Yes
>> Replace the Anti-Lock Brake Module in accordance with
the Service Information.
Perform ABS VERIFICATION TEST - VER 1.
No
>> Repair the (G94) Sensor Cluster Ground circuit for an
open.
Perform ABS VERIFICATION TEST - VER 1.
5 - 344
BRAKES - BRAKE CONTROLLER ELECTRICAL DIAGNOSTICS
WK
C2116-ABS PUMP MOTOR SUPPLY LOW VOLTAGE
WK
BRAKES - BRAKE CONTROLLER ELECTRICAL DIAGNOSTICS
5 - 345
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