Refer to DTC P1750.
Refer to DTC P1750.
Refer to DTC P1750.
Refer to DTC P1750.
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.
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Has a problem been found?
▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.
▶ Go to the next procedure.
FRSS(Front Right Speed Sensor) Signal Inspection
IG KEY ON, ENG ON
4WD ECM connector : Connect.
Monitor signal waveform between terminal 17 of 4WD ECM harness connector and chassis ground.
Start and drive vehicle in gear and maintain vehicle speed is approx. 10km/h or less(6mph or less).
Specification : refer to 'Waveform Inspection'
Is FRSS Signal display near the specified value?
▶ This may caused by intermittent fault. Verify data changibility by shaking the harness.
▶ Inspect ground to short of FRSS circuit.
▶ Inspect open or short of FRSS circuit.
▶ Check for FRSS and replace it as necessary.
▶ Check for 4WD ECM and replace it as necessary.
FRSS open inspection
IG KEY OFF, ENG OFF
4WD ECM connector and FRSS connector : Disconnect.
Measure resistance between terminal 17 of 4WD ECM harness connector and terminal 2 of FRSS harness connector.
Specification : Approx. 0Ω
Is resistance display near the specified value?
▶ Proceed next inspection procedure.
▶ Repair open circuit of FRSS circuit.
▶ If problem is solved, go to the "Verification of Vehicle Repair".
FRSS ground circuit open inspection
IG KEY OFF, ENG OFF
4WD ECM connector and FRSS connector : Disconnect.
Measure resistance between terminal 7 of 4WD ECM harness connector and terminal 1 of FRSS harness connector.
Specification : Approx. 0Ω
Is resistance display near the specified value?
▶ Proceed next inspection procedure.
▶ Repair open circuit of FRSS circuit.
▶ If problem is solved, go to the "Verification of Vehicle Repair".
FRSS short to ground inspection
IG KEY OFF, ENG OFF
4WD ECM connector and FRSS connector : Disconnect.
Measure resistance between terminal 17 of 4WD ECM harness connector and chassis ground.
Specification : Approx. ∞Ω
Is resistance display near the specified value?
▶ Proceed next inspection procedure.
▶ Repair ground to short circuit of FRSS circuit.
▶ If problem is solved, go to the "Verification of Vehicle Repair".
FRSS Air Gap Inspection
IG KEY : OFF, Engine : OFF.
4WD ECM connector and FRSS connector : Disconnect.
Measure air gap between wheel speed sensor and rotor.
Specification : Front Air-gap : 0.3~0.9mm (0.0118 ~ 0.0354 inch)
Is the air gap in the range of the specified value?
▶ 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".
▶ Adjust the air gap.
▶ If problem is solved, go to the "Verification of Vehicle Repair".
IG KEY : OFF, Engine : OFF
4WD ECM connector and FRSS connector : Disconnect.
Measure resistance between terminal 1 & 2 of FRSS harness connector.
Specification : Approx. 1.1 ± 0.05㏀
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 FRSS.
Is resistance display near the specified value?
▶ Proceed next inspection procedure.
▶ Replace the front left speed sensor.
▶ If problem is solved, go to the "Verification of Vehicle Repair".
IG KEY ON, ENG ON
4WD ECM connector and FRSS connector : Connect.
Clear the DTC with a scan tool.
Start and drive vehicle in gear and maintain vehicle speed is approx. 10km/h or less(6mph or less).
Check FRSS signal signal and verify the malfunction.
Does the scan tool display any DTC relevent to FRSS signal?
Go to the applicable troubleshooting procedure.
▶ System OK.
