Toyota CH-R Service Manual: Torque Sensor Zero Point Adjustment Incomplete (C1516)

Toyota CH-R Service Manual / Power Assist Systems / Power Steering System / Torque Sensor Zero Point Adjustment Incomplete (C1516)

DESCRIPTION

This DTC does not indicate a malfunction. The power steering ECU assembly stores this DTC when it determines that torque sensor zero point calibration has not completed.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Return-to-normal Condition	Note
C1516	Torque Sensor Zero Point Adjustment Incomplete	Torque sensor zero point calibration is incomplete due to the steering wheel being touched during calibration.	-	EPS warning light: Comes on	Ignition switch ON again	There is no malfunction if this DTC is not output again after clearing the DTC and torque sensor calibration value, and performing zero point calibration.

CAUTION / NOTICE / HINT

NOTICE:

If the electric power steering column sub-assembly has been replaced, perform torque sensor zero point calibration.
Click here
If the power steering ECU assembly has been replaced, perform assist map writing and torque sensor zero point calibration.
Click here

PROCEDURE

1.	CHECK FOR DTC

(a) Clear the DTCs. (Step 1)

Click here

Chassis > EMPS > Clear DTCs

(b) Calibrate the torque sensor zero point. (Step 2)

Click here

Chassis > EMPS > Utility

Tester Display
Torque Sensor Adjustment

Click here

Chassis > EMPS > Trouble Codes

HINT:

If DTCs are output, perform steps (1) to (3) two more times.

Result	Proceed to
DTCs are still output after performing steering zero point calibration 3 times.	A
Normal system code is output.	B

END

2.	REPLACE POWER STEERING ECU ASSEMBLY

(a) Replace the power steering ECU assembly.

Click here

3.	CHECK FOR DTC

(a) Clear the DTCs. (Step 1)

Click here

Chassis > EMPS > Clear DTCs

(b) Calibrate the torque sensor zero point. (Step 2)

Click here

Chassis > EMPS > Utility

Tester Display
Torque Sensor Adjustment

Click here

Chassis > EMPS > Trouble Codes

HINT:

If DTCs are output, perform steps (1) to (3) two more times.

Result	Proceed to
DTCs are still output after performing steering zero point calibration 3 times.	A
Normal system code is output.	B

REPLACE ELECTRIC POWER STEERING COLUMN SUB-ASSEMBLY

END

Short in Motor Circuit (C1521-C1523,C1528,C1531-C1555)

DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note ...

EPS Warning Light Circuit

DESCRIPTION If the power steering ECU assembly detects a malfunction, the power steering ECU assembly stores a DTC and illuminates the EPS warning light. WIRING DIAGRAM CAUTION / NOTICE / HINT ...

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