Jeep Liberty KJ. Manual — part 827
C1015–RIGHT FRONT WHEEL SPEED SENSOR CIRCUIT
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 Right Front Wheel Speed Sensor signal current is out of range.
Possible Causes
WIRING HARNESS, TERMINAL, CONNECTOR DAMAGE
(B7) RIGHT FRONT WSS 12 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE, SHORTED TO GROUND, OR
OPEN
(B6) RIGHT FRONT WSS SIGNAL CIRCUIT SHORTED TO VOLTAGE, SHORTED TO GROUND, OR OPEN
(B6) RIGHT FRONT WSS SIGNAL CIRCUIT SHORTED TO (B7) RIGHT FRONT WSS 12 VOLT SUPPLY
CIRCUIT
RIGHT FRONT WSS
ANTI-LOCK BRAKES MODULE
Diagnostic Test
1.
VERIFY DTC IS ACTIVE
Turn the ignition on.
With the scan tool, record and erase ABS DTCs.
Cycle the ignition switch.
With the scan tool, read ABS DTCs.
Does the scan tool display: C1015–RIGHT FRONT WHEEL SPEED SENSOR CIRCUIT?
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 CONNECTORS & TERMINALS FOR DAMAGE
Turn the ignition off.
Inspect the Anti-Lock Brakes Module harness connector, Right Front WSS harness connector, and Right Front WSS
harness connector for broken, bent, pushed out, and corroded terminals.
Are any of the connectors or terminals damaged?
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 (B7) RIGHT FRONT WSS 12 VOLT SUPPLY CIRCUIT VOLTAGE
If not done so previously, reconnect the Anti-Lock Brakes Module har-
ness connector.
Disconnect the Right Front WSS harness connector.
Turn the ignition on.
Measure the voltage of the (B7) Right Front WSS 12 Volt Supply circuit.
Is the voltage above 10.0 volts?
Yes
>> Go To 6
No
>> Go To 4
4.
CHECK (B7) RIGHT FRONT WSS 12 VOLT SUPPLY CIRCUIT FOR A SHORT TO GROUND
Turn the ignition off.
Disconnect the Anti-Lock Brakes Module harness connector.
Using a 12-volt test light connected to 12 volts, probe the (B7) Right
Front WSS 12 Volt Supply circuit.
Does the test light illuminate?
Yes
>> Repair the (B7) Right Front WSS 12 Volt Supply circuit for a
short to ground.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 -
BRAKES - STANDARD PROCEDURE).
No
>> Go To 5
5.
CHECK (B7) RIGHT FRONT WSS 12 VOLT SUPPLY CIRCUIT FOR AN OPEN
Connect a jumper wire between ground and the (B7) Right Front WSS
12 Volt Supply circuit in the Anti-Lock Brakes Module harness connec-
tor.
Using a 12-volt test light connected to 12 volts, probe the (B7) Right
Front WSS 12 Volt Supply circuit.
Does the test light illuminate brightly?
Yes
>> Go To 6
No
>> Repair the (B7) Right Front WSS 12 Volt Supply circuit for
an open.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 -
BRAKES - STANDARD PROCEDURE).
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6.
CHECK (B6) RIGHT FRONT WSS SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE
If not done so previously, turn the ignition on.
Measure the voltage of the (B6) Right Front WSS Signal circuit.
Is the voltage above 1.0 volt?
Yes
>> Repair the (B6) Right Front WSS Signal circuit for a short to
voltage.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 -
BRAKES - STANDARD PROCEDURE).
No
>> Go To 7
7.
CHECK (B6) RIGHT FRONT WSS SIGNAL CIRCUIT FOR A SHORT TO GROUND
Turn the ignition off.
If not done so previously, disconnect the Anti-Lock Brakes Module har-
ness connector.
Using a 12-volt test light connected to 12 volts, probe the (B6) Right
Front WSS Signal circuit.
Does the test light illuminate?
Yes
>> Repair the (B6) Right Front WSS Signal circuit for a short to
ground.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 -
BRAKES - STANDARD PROCEDURE).
No
>> Go To 8
8.
CHECK (B6) RIGHT FRONT WSS SIGNAL CIRCUIT FOR AN OPEN
Connect a jumper wire between ground and the (B6) Right Front WSS
Signal circuit in the Anti-Lock Brakes Module harness connector.
Using a 12-volt test light connected to 12 volts, probe the (B6) Right
Front WSS Signal circuit.
Does the test light illuminate brightly?
Yes
>> Go To 9
No
>> Repair the (B6) Right Front WSS Signal circuit for an open.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 -
BRAKES - STANDARD PROCEDURE).
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