P1753

DTC P1753 WHEEL SPEED SENSOR SIGNAL (RR)





COMPONENT LOCATION

GENERAL DESCRIPTION
Refer to DTC P1750. P1750

DTC DESCRIPTION
Refer to DTC P1750. P1750

DTC DETECTING CONDITION
Refer to DTC P1750. P1750





SCHEMATIC DIAGRAM

WAVEFORM INSPECTION
Refer to DTC P1750. P1750

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. RRSS (Rear Right Speed Sensor) Signal Inspection
1) IG KEY ON, ENG ON
2) 4WD ECM connector: Connect.
3) Monitor signal waveform between terminal 20 of 4WD ECM harness connector and chassis ground.
4) Start and drive vehicle in gear and maintain vehicle speed is approximately 10 km/h or less (6 mph or less).
Specification: refer to "Waveform Inspection"
Is RRSS Signal display near the specified value?
YES This may caused by intermittent fault. Verify data changeability by shaking the harness.
NO Inspect ground to short of RRSS circuit.
^ Inspect open or short of RRSS circuit.
^ Check for RRSS and replace it as necessary.
^ Check for 4WD ECM and replace it as necessary.
2. RRSS open inspection
1) IG KEY OFF, ENG OFF
2) 4WD ECM connector and RRSS connector Disconnect.





3) Measure resistance between terminal 20 of 4WD ECM harness connector and terminal 2 of RRSS harness connector.
Specification.- Approximately 0 ohms
Is resistance display near the specified value?
YES Proceed next inspection procedure.
NO Repair open circuit of RRSS circuit.
If problem is solved, go to the "Verification of Vehicle Repair".
3. RRSS ground circuit open inspection
1) IG KEY OFF, ENG OFF
2) 4WD ECM connector and RRSS connector: Disconnect.





3) Measure resistance between terminal 9 of 4WD ECM harness connector and terminal 1 of RRSS harness connector.
Specification: Approximately 0 ohms
Is resistance display near the specified value?
YES Proceed next inspection procedure.
NO Repair open circuit of RRSS circuit.
If problem is solved, go to the "Verification of Vehicle Repair".

GROUND CIRCUIT INSPECTION
1. RRSS short to ground inspection
1) IG KEY OFF, ENG OFF
2) 4WD ECM connector and RRSS connector: Disconnect.





3) Measure resistance between terminal 20 of 4WD ECM harness connector 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 RRSS circuit.
If problem is solved, go to the "Verification of Vehicle Repair".

COMPONENT INSPECTION
1. IG KEY: OFF, Engine: OFF
2. 4WD ECM connector and RRSS connector: Disconnect.





3. Measure resistance between terminal 1 & 2 of RRSS harness connector.
Specification: Approximately 1.1 ± 0.05 kohms

NOTE: The above value is just for reference. The data from vehicle may differ from it according as various vehicle condition. This inspection is for checking open or short of RRSS.

Is resistance display near the specified value?
YES Proceed next inspection procedure.
NO Replace the front left speed sensor.
If problem is solved, go to the "Verification of Vehicle Repair".

VISUAL/PHYSICAL INSPECTION
1. RRSS Air Gap Inspection
1) IG KEY: OFF, Engine: OFF.
2) 4WD ECM connector and RRSS connector: Disconnect.
3) Measure air gap between wheel speed sensor and rotor.
Specification: Front Air-gap: 0.3 - 0.9 mm (0.0118 - 0.0354 inch)
Is the air gap in the range of the specified value?
YES Replace with normal TCCU temporarily and check if vehicle run normally. If trouble is disappeared, replace TCCU.
If problem is solved, go to the "Verification of Vehicle Repair".
NO Adjust the air gap.
If problem is solved, go to the "Verification of Vehicle Repair".

VERIFICATION OF VEHICLE REPAIR
1. IG KEY ON, ENG ON
2. 4WD ECM connector and RRSS connector: Connect.
3. Clear the DTC with a scan tool.
4. Start and drive vehicle in gear and maintain vehicle speed is approximately 10 km/h or less (6 mph or less).
5. Check RRSS signal signal and verify the malfunction.
Does the scan tool display any DTC relevant to RRSS signal?
YES Go to the applicable troubleshooting procedure.
NO System OK.