Jeep Grand Cherokee WK. Manual — part 155
C1219-STEERING ANGLE SENSOR ERRATIC PERFORMANCE (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 detects a calculated steering wheel angle offset is out of the specified
range.
Possible Causes
TERMINAL/CONNECTOR/WIRING HARNESS DAMAGE
(A108) FUSED B(+) CIRCUIT OPEN
(Z907) GROUND CIRCUIT OPEN
(D65) CAN C (+) BUS AND (D64) CAN C (-) BUS CIRCUITS SHORTED TOGETHER
(D65) CAN C (+) BUS CIRCUIT SHORTED TO VOLTAGE, GROUND, OR OPEN
(D64) CAN C (-) BUS CIRCUIT SHORTED TO VOLTAGE, GROUND, OR OPEN
STEERING CONTROL MODULE
Diagnostic Test
1.
CHECK FOR A DTC C1219-STEERING ANGLE SENSOR ERRATIC PERFORMANCE
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 DTC’s.
With the scan tool, read and record Freeze Fame information.
With the scan tool, erase DTC’s.
Cycle the ignition switch from off to on.
With the scan tool, read and record DTC’s.
Does the scan tool display: C1219-STEERING ANGLE SENSOR ERRATIC PERFORMANCE?
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 the Steering Angle Sensor installation.
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
WK
C1219-STEERING ANGLE SENSOR ERRATIC PERFORMANCE (CONTINUED)
3.
CHECK THE VOLTAGE ON THE (A108) FUSED B(+) CIRCUIT
Turn the ignition off.
Disconnect the Steering Control Module harness connector.
Turn the ignition on.
Measure the voltage of the (A108) Fused B(+) circuit.
Is the voltage above 10 volts?
Yes
>> Go To 4
No
>> Repair the (A108) Fused B(+) circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
4.
CHECK THE RESISTANCE OF THE (Z907) GROUND CIRCUIT
Turn the ignition off.
Measure the resistance between the (Z907) Ground circuit and
ground.
Is the resistance below 5.0 ohms?
Yes
>> Go To 5
No
>> Repair the (Z907) Ground circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
WK
BRAKES - BRAKE CONTROLLER ELECTRICAL DIAGNOSTICS
5 - 247
C1219-STEERING ANGLE SENSOR ERRATIC PERFORMANCE (CONTINUED)
5.
CHECK THE (D65) CAN C (+) BUS AND (D64) CAN C (-) BUS CIRCUITS FOR A SHORT TOGETHER
Turn the ignition off.
Disconnect the Anti-Lock Brake Module harness connector.
Measure the resistance between the (D65) CAN C (+) BUS circuit and
the (D64) CAN C (-) BUS circuit.
Is the resistance below 150 ohms?
Yes
>> Repair the (D65) CAN C (+) BUS and the (D64) CAN C (-)
BUS circuits for a short together.
Perform ABS VERIFICATION TEST - VER 1.
No
>> Go To 6
6.
CHECK THE (D65) CAN C (+) BUS CIRCUIT FOR A SHORT TO GROUND
Turn the ignition off.
Measure the resistance between ground and the (D65) CAN C (+)
BUS circuit.
Is the resistance below 5.0 ohms?
Yes
>> Repair the (D65) CAN C (+) BUS circuit for a short to
ground.
Perform ABS VERIFICATION TEST - VER 1.
No
>> Go To 7
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BRAKES - BRAKE CONTROLLER ELECTRICAL DIAGNOSTICS
WK
C1219-STEERING ANGLE SENSOR ERRATIC PERFORMANCE (CONTINUED)
7.
CHECK THE (D65) CAN C (+) BUS CIRCUIT FOR A SHORT TO VOLTAGE
Turn the ignition on.
Measure the voltage of the (D65) CAN C (+) BUS circuit.
Is there any voltage present?
Yes
>> Repair the (D65) CAN C (+) BUS circuit for a short to volt-
age.
Perform ABS VERIFICATION TEST - VER 1.
No
>> Go To 8
8.
CHECK THE (D65) CAN C (+) BUS CIRCUIT FOR AN OPEN CIRCUIT
Turn the ignition off.
Measure the resistance of the (D65) CAN C (+) Bus circuit.
Is the resistance below 5.0 ohms?
Yes
>> Go To 9
No
>> Repair the (D65) CAN C (+) BUS circuit for an open cir-
cuit.
Perform ABS VERIFICATION TEST - VER 1.
WK
BRAKES - BRAKE CONTROLLER ELECTRICAL DIAGNOSTICS
5 - 249
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