VARIABLE GEAR RATIO STEERING SYSTEM, Diagnostic DTC:C15A5/65

DESCRIPTION

If the steering control ECU detects a malfunction in the lock mechanism, it will turn the master warning light on, store DTC C15A5/65, and stop VGRS operation.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (STEERING CONTROL ECU - STEERING ACTUATOR)

   

   
   

   1. Disconnect the E84 steering control ECU connector.

   2. Disconnect the E85 steering actuator connector.

   3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition E84-3 (LV) - E85-7 (LV+) Always Below 1 Ω E84-12 (LG) - E85-16 (LG+) E84-3 (LV) - Body ground Always 10 kΩ or higher E84-12 (LG) - Body ground

   4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition E84-3 (LV) - Body ground Engine switch on (IG) Below 1 V E84-12 (LG) - Body ground

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

2. CHECK STEERING ACTUATOR (STEERING CONTROL ECU - STEERING ACTUATOR)

   
   

   1. Disconnect the E84 steering control ECU connector.

   2. 

      Reconnect the E85 steering actuator connector.

   3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition E84-3 (LV) - E84-12 (LG) Always 10 to 100 Ω E84-3 (LV) - Body ground Always 10 kΩ or higher E84-12 (LG) - Body ground

      Result

      Result	Proceed to
      NG	A
      OK (for LHD)	B
      OK (for RHD)	C

   
   

   B

   REPLACE STEERING CONTROL ECU Click here

   C

   REPLACE STEERING CONTROL ECU Click here

   A

   REPLACE STEERING ACTUATOR ASSEMBLY Click here