Jeep Grand Cherokee WK. Manual — part 176
C2111-SENSOR SUPPLY VOLTAGE CIRCUIT LOW (CONTINUED)
8.
(B83) BRAKE PRESSURE SENSOR SUPPLY CIRCUIT OPEN
Turn the ignition off.
Measure the resistance of the (B83) Brake Pressure Sensor Supply
circuit.
Is the resistance below 5.0 ohms?
Yes
>> Replace the Anti-Lock Brake Module in accordance with
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
No
>> Repair the (B83) Brake Pressure Sensor Supply circuit for
an open.
Perform ABS VERIFICATION TEST - VER 1.
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BRAKES - BRAKE CONTROLLER ELECTRICAL DIAGNOSTICS
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C2112-SENSOR SUPPLY VOLTAGE CIRCUIT HIGH
WK
BRAKES - BRAKE CONTROLLER ELECTRICAL DIAGNOSTICS
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C2112-SENSOR SUPPLY VOLTAGE CIRCUIT HIGH (CONTINUED)
For the Anti-Lock Brake System circuit diagram. (Refer to 5 - BRAKES - SCHEMATICS AND DIAGRAMS)
For a complete wiring diagram Refer to Section 8W
•
When Monitored:
With the ignition on.
•
Set Condition:
When the Anti-Lock Brake Module indicates that the Brake Pressure Sensor Signal is within the high fault
area.
Possible Causes
TERMINAL/CONNECTOR/WIRING HARNESS DAMAGE
(B83) BRAKE PRESSURE SENSOR SUPPLY CIRCUIT SHORTED TO THE (B84) BRAKE PRESSURE SENSOR
SIGNAL CIRCUIT
(B83) BRAKE PRESSURE SENSOR SUPPLY CIRCUIT SHORTED TO THE (B986) BRAKE PRESSURE
SENSOR RETURN CIRCUIT
(B83) BRAKE PRESSURE SENSOR SUPPLY CIRCUIT SHORTED TO VOLTAGE OR GROUND
ANTI-LOCK BRAKE MODULE
Diagnostic Test
1.
CHECK FOR A DTC C2112-SENSOR SUPPLY VOLTAGE CIRCUIT HIGH
NOTE: This DTC must be active for the results of this test to be valid.
Turn the ignition on.
With the scan tool, read and record DTCs.
With the scan tool, read and record Freeze Fame information.
With the scan tool, erase DTCs.
Cycle the ignition from off to on.
With the scan tool, read and record DTCs.
Does the scan tool display: C2112-SENSOR SUPPLY VOLTAGE CIRCUIT HIGH?
Yes
>> Go To 2
No
>> Refer to the INTERMITTENT CONDITION diagnostic procedure.
Perform ABS VERIFICATION TEST - VER 1.
2.
CHECK THE TERMINALS/CONNECTORS/WIRING HARNESS FOR DAMAGE
Check all related wiring for bruised, chafed, pierced, or partially broken wires.
Check all related connectors for broken, bent, pushed out, or corroded terminals.
Were any problems found?
Yes
>> Repair as necessary.
Perform ABS VERIFICATION TEST - VER 1.
No
>> Go To 3
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BRAKES - BRAKE CONTROLLER ELECTRICAL DIAGNOSTICS
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C2112-SENSOR SUPPLY VOLTAGE CIRCUIT HIGH (CONTINUED)
3.
CHECK THE VOLTAGE ON THE (B83) BRAKE PRESSURE SENSOR SUPPLY CIRCUIT
Turn the ignition off.
Disconnect the Brake Pressure Sensor harness connector.
Turn the ignition on.
Measure the voltage of the (B83) Brake Pressure Sensor Supply cir-
cuit.
Is the voltage above 6 volts?
Yes
>> Go To 4
No
>> Replace the Brake Pressure Sensor in accordance with
the Service Information.
Perform ABS VERIFICATION TEST - VER 1.
4.
(B83) BRAKE PRESSURE SENSOR SUPPLY CIRCUIT SHORTED TO THE (B84) BRAKE PRESSURE
SENSOR SIGNAL CIRCUIT
Turn the ignition off.
Disconnect the Anti-Lock Brake Module harness connector.
Measure the resistance between the (B83) Brake Pressure Sensor
Supply circuit and the (B84) Brake Pressure Sensor Signal circuit.
Is the resistance below 150 ohms?
Yes
>> Repair the (B83) Brake Pressure Sensor Supply circuit for
a short to the (B84) Brake Pressure Sensor Signal circuit.
Perform ABS VERIFICATION TEST - VER 1.
No
>> Go To 5
5.
(B83) BRAKE PRESSURE SENSOR SUPPLY CIRCUIT SHORTED TO THE (986) BRAKE PRESSURE
SENSOR RETURN CIRCUIT
Measure the resistance between the (B83) Brake Pressure Sensor
Supply circuit and the (986) Brake Pressure Sensor Return circuit.
Is the resistance below 150 ohms?
Yes
>> Repair the (B83) Brake Pressure Sensor Supply circuit for
a short to the (986) Brake Pressure Sensor Return circuit.
Perform ABS VERIFICATION TEST - VER 1.
No
>> Go To 6
WK
BRAKES - BRAKE CONTROLLER ELECTRICAL DIAGNOSTICS
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