P1718
DTC P1718 STEERING WHEEL ANGLE SENSOR 2-INPUT SIGNALCOMPONENT LOCATION
Refer to DTC P1717. P1717
GENERAL DESCRIPTION
Refer to DTC P1717. P1717
DTC DESCRIPTION
The DTC will set when the steering angle sensor #2 signal to 4WD ECM is out of range.
DTC DETECTING CONDITION
Refer to DTC P1717. P1717
SCHEMATIC DIAGRAM
Refer to DTC P1717. P1717
WAVEFORM INSPECTION
Refer to DTC P1717. P1717
TERMINAL & CONNECTOR INSPECTION
1. Many malfunctions in the electrical system may be caused from poor harness and terminals. These faults can be caused by interference from other electrical systems and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Has a problem been found?
YES Repair as necessary and go to "Verification of Vehicle Repair" procedure.
NO Go to the next procedure.
SIGNAL CIRCUIT INSPECTION
1. Steering angle sensor #2 Signal Inspection
1) IG KEY ON, ENG ON
2) 4WD ECM, Steering angle sensor connector: Connect.
3) Monitor signal waveform between terminal 4 of Steering angle sensor harness connector M14 and chassis ground.
4) Rotate the steering wheel both ways.
Specification: refer to "Waveform Inspection"
Is Steering angle sensor #2 Signal display near the specified value?
YES This may caused by intermittent fault. Verify data changeability by shaking the harness.
NO
^ Inspect power and power supply line of Steering angle sensor #2 circuit.
^ Inspect ground and ground line of Steering angle sensor #2 circuit.
^ Inspect ground to short of Steering angle sensor #2 circuit.
^ Inspect open or short of Steering angle sensor #2 circuit.
^ Check for Steering angle sensor module and replace it as necessary.
^ Check for 4WD ECM and replace it as necessary.
2. Steering angle sensor #2 short to ground Inspection
1) IG KEY OFF, ENG OFF
2) 4WD ECM connector and Steering angle sensor connector: Disconnect.
3) Measure resistance between terminal 4 of Steering angle sensor harness connector M14 and chassis ground.
Specification: Approximately 0 ohms
Is resistance display near the specified value?
YES Proceed next inspection procedure.
NO Repair ground to short circuit of Steering angle sensor #2 circuit.
If problem is solved, go to the "Verification of Vehicle Repair".
3. Steering angle sensor #2 open Inspection
1) IG KEY OFF, ENG OFF
2) 4WD ECM connector and Steering angle sensor connector: Disconnect.
3) Measure resistance between terminal 4 of Steering angle sensor harness connector M14 and terminal 24 of 4WD ECM harness connector. Is resistance display near the specified value?
YES Replace with normal Steering angle sensor module temporarily and check if vehicle run normally. If trouble is disappeared, replace Steering angle sensor control module.
Replace with normal 4WD ECM temporarily and check if vehicle run normally. If trouble is disappeared, replace 4WD ECM.
If problem is solved, go to the "Verification of Vehicle Repair".
NO Repair open circuit of Steering angle sensor #2 circuit.
If problem is solved, go to the "Verification of Vehicle Repair".
POWER SUPPLY CIRCUIT INSPECTION
Refer to DTC P1717. P1717
GROUND CIRCUIT INSPECTION
Refer to DTC P1717. P1717
VERIFICATION OF VEHICLE REPAIR
1. IG KEY ON, ENG ON
2. Steering angle sensor module, 4WD ECM connector: Connect.
3. Clear the DTC with a scan tool.
4. Rotate the steering wheel both ways.
5. Verify the malfunction relevant to steering angle sensor #2.
Does the scan tool display any DTC relevant to steering angle sensor #2?
YES Go to the applicable troubleshooting procedure.
NO System OK.