Toyota Avalon Service & Repair Manual: Power Steering Control Torque (C1A71)

DESCRIPTION

If the power steering ECU (rack and pinion power steering gear assembly) detects an abnormality in the steering torque requested by the forward recognition camera, the power steering ECU (rack and pinion power steering gear assembly) sends a malfunction signal to the forward recognition camera, and DTC C1A71 is stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1A71

Power Steering Control Torque

2 seconds after the engine switch is turned on (IG), a malfunction signal from the power steering ECU (rack and pinion power steering gear assembly) is detected by the forward recognition camera for 5 seconds or more.

Power steering system

CAUTION / NOTICE / HINT

NOTICE:

The lane departure alert system (w/ steering control) uses the CAN communication system. First, confirm that there are no malfunctions in the CAN communication system. Refer to How to Proceed with Troubleshooting.

Click here

PROCEDURE

1.

GO TO POWER STEERING SYSTEM

HINT:

If DTC C1A71 is output by the lane departure alert system (w/ steering control), perform troubleshooting for the power steering system.

Click here

NEXT

END

    Power Steering Control System (C1A70)

    Communication Error from FCM to Driving Support ECU (C1A72)

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