Lexus ES: On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. CHECK STEERING EFFORT (TORQUE)
NOTICE:
These service operations may affect the SRS airbags. Be sure to read the precautionary notices concerning the SRS airbag system before servicing.
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(a) Stop the vehicle on a level, paved surface and align the wheels straight ahead.
(b) Remove the horn button assembly.
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(c) Connect the cable to the negative (-) auxiliary battery terminal.
(d) Using a torque wrench, check that the steering wheel set bolt is properly tightened.
Torque:
62 N·m {632 kgf·cm, 46 ft·lbf}
(e) Turn the power switch on (READY) so that the power steering is ready to operate.
(f) Turn the steering wheel 90 degrees to the right and check steering effort (torque) with the steering wheel turned. Check in the opposite direction using the same method.
Standard Steering Effort (Reference):
5.5 N*m (56 kgf*cm, 49 in.*lbf) or less
(g) Align the front wheels facing straight ahead.
(h) Turn the power switch off.
(i) Disconnect the cable from the negative (-) auxiliary battery terminal.
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected.
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(j) Install the horn button assembly.
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READ NEXT:
Torque Sensor1 (C1511-C1514,C1521-C1523,C1528,C1531-C1555)
DESCRIPTION While torque sensor system, motor system or ECU system malfunctions are detected, the fail-safe function suspends power assist. However, power assist continues with limited assistance amou
Torque Sensor Zero Point Adjustment Undone (C1515)
DESCRIPTION This DTC does not indicate a malfunction. The power steering ECU (rack and pinion power steering gear assembly) stores this DTC when it determines that torque sensor zero point calibration
Torque Sensor Zero Point Adjustment Incomplete (C1516)
DESCRIPTION This DTC does not indicate a malfunction. The power steering ECU (rack and pinion power steering gear assembly) stores this DTC when it determines that torque sensor zero point calibration
SEE MORE:
Inspection
INSPECTION PROCEDURE 1. INSPECT FUEL PRESSURE SENSOR (a) Check the fuel pressure sensor output voltage. (1) Apply 5 V between terminals 1 (VC) and 2 (E2). NOTICE:
Be careful when connecting the leads as the fuel pressure sensor may be damaged if the leads are connected to the wrong terminals
Operation Check
OPERATION CHECK CHECK NAVIGATION SYSTEM NORMAL CONDITION (a) If the cause of a symptom is any of the following, the corresponding symptom is normal; it is not due to a malfunction. Symptom Answer A longer route than expected is chosen. Depending on the road conditions, the navigation ECU
