DTC C1528: Motor Rotation Angle Sensor [09/2014 - ]: Procedure

1. Check the connection of the power steering ECU assembly and power steering link assembly connectors.
2. Visually inspect the terminals of the power steering ECU assembly and power steering link assembly connectors.

   Result

   Result	Proceed to
   Normal	A
   Connectors not properly connected	B
   Power steering ECU assembly connector terminals abnormal	C
   Power steering link assembly connector terminals abnormal	D

Result: 

B 

CONNECT CONNECTORS PROPERLY 

Result: 

C 

REPLACE POWER STEERING ECU ASSEMBLY. Refer to  REMOVAL [09/2014 - ] 

Result: 

D 

REPLACE POWER STEERING LINK ASSEMBLY. Refer to  REMOVAL [09/2014 - 05/2018]  , or refer to  REMOVAL [05/2018 - 03/2019]  , or refer to  REMOVAL [03/2019 - ] 

Result: 

A 

See step  2

1. Disconnect the C2 motor rotation angle sensor connector.
2. Disconnect the C5 power steering ECU assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C2-2 (RZG) - C5-1 (RZG)	Always	Below 1 Ω
   C2-4 (RZCS) - C5-8 (RZCS)	Always	Below 1 Ω
   C2-1 (RZSN) - C5-7 (RZSN)	Always	Below 1 Ω
   C2-3 (RZV) - C5-3 (RZV)	Always	Below 1 Ω
   C2-2 (RZG) - Body ground	Always	10 kΩ or higher
   C2-4 (RZCS) - Body ground	Always	10 kΩ or higher
   C2-1 (RZSN) - Body ground	Always	10 kΩ or higher
   C2-3 (RZV) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Disconnect the C2 motor rotation angle sensor connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 (RZSN) - 2 (RZG)	Always	50 to 140 Ω
   3 (RZV) - 2 (RZG)	Always	15 to 45 Ω
   4 (RZCS) - 2 (RZG)	Always	50 to 140 Ω

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Motor Rotation Angle Sensor)

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE POWER STEERING LINK ASSEMBLY. Refer to  REMOVAL [09/2014 - 05/2018]  , or refer to  REMOVAL [05/2018 - 03/2019]  , or refer to  REMOVAL [03/2019 - ] 

Result: 

OK 

See step  4

1. Replace the power steering ECU assembly.

   Refer to REMOVAL [09/2014 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

1. Perform assist map writing, rotation angle sensor initialization and torque sensor zero point calibration.

   Refer to CALIBRATION [09/2014 - 03/2019] , or refer to CALIBRATION [03/2019 - ]

   Chassis > EMPS > Utility 

   Tester Display
   Torque Sensor Adjustment

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  6

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [09/2014 - 08/2016] , or refer to DTC CHECK / CLEAR [08/2016 - 11/2017] , or refer to DTC CHECK / CLEAR [11/2017 - 03/2019] , or refer to DTC CHECK / CLEAR [03/2019 - ]

   Chassis > EMPS > Clear DTCs 

2. Start the engine.
3. Check for DTCs.

   Refer to DTC CHECK / CLEAR [09/2014 - 08/2016] , or refer to DTC CHECK / CLEAR [08/2016 - 11/2017] , or refer to DTC CHECK / CLEAR [11/2017 - 03/2019] , or refer to DTC CHECK / CLEAR [03/2019 - ]

   Chassis > EMPS > Trouble Codes 

   Result

   Result	Proceed to
   DTC C1528 is not output.	A
   DTC C1528 is output.	B

Result: 

A 

END 

Result: 

B 

REPLACE POWER STEERING LINK ASSEMBLY. Refer to  REMOVAL [09/2014 - 05/2018]  , or refer to  REMOVAL [05/2018 - 03/2019]  , or refer to  REMOVAL [03/2019 - ]