DTC C1B13/23: Motor Rotation Angle Not Detected: Procedure

1. Check for DTCs. Refer to DTC CHECK / CLEAR [12/2011 - ] .
   RESULT
   
   

   Result	Proceed to
   DTC C1B13/23 is output as a past DTC	A
   DTC C1B13/23 is output as a current DTC	B

B → See step   4 

A: Go to next step 

1. Perform actuator forced activation. Refer to ON-VEHICLE INSPECTION [12/2011 - ] .

NEXT: Go to next step 

1. Check for DTCs. Refer to DTC CHECK / CLEAR [12/2011 - ] .
   RESULT
   
   

   Result	Proceed to
   DTC C1B13/23 is output as a current DTC	A
   DTC C1B13/23 is output as a past DTC	B

B → See step   8 

A: Go to next step 

1. Turn the engine switch off.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG).
4. Turn the Techstream on.
5. Display the DTCs on the Techstream screen. Refer to DTC CHECK / CLEAR [12/2011 - ] .
6. Select DTC "C1B13/23", and check the freeze frame data for "Motor Resolver SIN Phase Offset" and "Motor Resolver COS Phase Offset". Refer to FREEZE FRAME DATA [12/2011 - ] .
   RESULT
   
   

   Result	Proceed to
   "Motor Resolver SIN Phase Offset" and "Motor Resolver COS Phase Offset" are 5 V or higher	A
   "Motor Resolver SIN Phase Offset" and "Motor Resolver COS Phase Offset" are below 5 V	B

B → See step   7 

A: Go to next step 

1. Turn the engine switch off.
2. Disconnect the rear steering link assembly connector from the DRS ECU (rear steering control ECU).
3. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   z15-3 (MRV) - z15-2 (MRG)	Always	26 to 64 Ω
   z15-8 (MS1) - z15-2 (MRG)	Always	92 to 230 Ω
   z15-7 (MS2) - z15-2 (MRG)	Always	98 to 247 Ω
   z15-3 (MRV) - z15-8 (MS1)	Always	118 to 294 Ω
   z15-3 (MRV) - z15-7 (MS2)	Always	124 to 311 Ω
   z15-8 (MS1) - z15-7 (MS2)	Always	190 to 477 Ω
   z15-3 (MRV) - Body ground	Always	100 kΩ or higher
   z15-2 (MRG) - Body ground	Always	100 kΩ or higher
   z15-8 (MS1) - Body ground	Always	100 kΩ or higher
   z15-7 (MS2) - Body ground	Always	100 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of rear steering link assembly connector (to DRS ECU [Rear Steering Control ECU])

NG → See step   6 

OK → See step   7