POWER STEERING SYSTEM Drive Mode Select Switch Circuit

DESCRIPTION

The characteristics of the electronic throttle, EPS and automatic transaxle change by operating the drive mode select switch (combination switch assembly).

PROCEDURE

1. Click here

   CHECK THE PROBLEM SYMPTOMS

   
   

   1. Check each symptom by checking the suspected areas in the table below.

      Result
      Result Proceed to SPORT, SPORT S/S+ mode or NORMAL mode is abnormal. A ECO mode is abnormal. B

   
   
   • AClick here
   • B

     GO TO AIR CONDITIONING SYSTEMClick here

2. Click here

   CHECK CAN COMMUNICATION SYSTEM

   
   

   1. Check for DTCs.

      Click here

      Result
      Result Proceed to CAN communication system DTCs are not output. A CAN communication system DTCs are output. B

   
   
   • AClick here
   • B

     GO TO CAN COMMUNICATION SYSTEMClick here

3. Click here

   CHECK HARNESS AND CONNECTOR (DRIVE MODE SELECT SWITCH (COMBINATION SWITCH ASSEMBLY) - BODY GROUND)

   
   

   1. Turn the engine switch off.

   2. 

      *a	Front view of wire harness connector (to Drive mode select switch (combination switch assembly))

      Disconnect the O78 drive mode select switch (combination switch assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition O78-16 (E) - Body ground Always Below 1 Ω

      Result
      Proceed to OK NG

   
   
   • OKClick here
   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR

4. Click here

   INSPECT DRIVE MODE SELECT SWITCH (COMBINATION SWITCH ASSEMBLY)

   
   

   1. Inspect drive mode select switch (combination switch assembly).

      Click here

      OK
      Drive mode select switch (combination switch assembly) is normal.

      Result
      Proceed to OK NG

   
   
   • OKClick here
   • NG

     REPLACE COMBINATION SWITCH ASSEMBLYClick here

5. Click here

   CHECK HARNESS AND CONNECTOR (DRIVE MODE SELECT SWITCH (COMBINATION SWITCH ASSEMBLY) - ECM)

   
   

   1. Reconnect the O78 drive mode select switch (combination switch assembly) connector.

   2. 

      *a	Rear view of wire harness connector (to ECM)

      Disconnect the A77 ECM connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition A77-21 (PWMS) - Body ground SPORT mode switch being turned and held Below 50 Ω A77-21 (PWMS) - Body ground SPORT mode switch not turned 10 kΩ or higher A77-25 (SPCN) - Body ground NORMAL mode switch being pushed and held Below 50 Ω A77-25 (SPCN) - Body ground NORMAL mode switch not pushed 10 kΩ or higher

      Result
      Proceed to OK NG

   
   
   • OK

     REPLACE ECMClick here

   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR