TRANSFER SYSTEM, Diagnostic DTC:P17A9

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DESCRIPTION

This DTC is output when a short to ground in the high-low transfer shift motor, center differential lock shift motor and differential lock shift motor* drive circuit is detected.

• *: w/ Rear Differential Lock

• *: w/ Rear Differential Lock

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PROCEDURE

1. Click here

   CHECK ACTUATOR ASSEMBLY (TRANSFER SHIFT MOTOR OR LOCK SHIFT MOTOR)

   
   

   1. Disconnect the A28 4 wheel drive control ECU connector.

   2. 

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

      Standard Resistance
      Table 1. Transfer Shift Actuator Assembly (High-low Transfer Shift Motor) Side Tester Connection Condition Specified Condition A28-2 (HM1) or A28-6 (HM2) - Body ground Always 10 kΩ or higher
      Table 2. Transfer Shift Actuator Assembly (Center Differential Lock Shift Motor) Side Tester Connection Condition Specified Condition A28-8 (TM1) or A28-7 (TM2) - Body ground Always 10 kΩ or higher
      Table 3. Differential Lock Shift Actuator (Differential Lock Shift Motor) Side (w/ Rear Differential Lock) Tester Connection Condition Specified Condition A28-3 (M1) or A28-9 (M2) - Body ground Always 10 kΩ or higher

      Table 4. Text in Illustration

      *A	w/ Rear Differential Lock
      *a	Front view of wire harness connector (to 4 Wheel Drive Control ECU)

      Result
      Result Proceed to OK for LHD A for RHD B NG (transfer shift actuator assembly (high-low transfer shift motor) side) C NG (transfer shift actuator assembly (center differential lock shift motor) side) D NG (differential lock shift actuator (differential lock shift motor) side (w/ Rear Differential Lock)) E

   
   
   • A

     REPLACE 4 WHEEL DRIVE CONTROL ECU (Click here)

   • B

     REPLACE 4 WHEEL DRIVE CONTROL ECU (Click here)

   • CClick here
   • DClick here
   • EClick here
2. Click here

   CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU AND TRANSFER SHIFT ACTUATOR ASSEMBLY - BODY GROUND)

   
   

   1. Disconnect the A28 4 wheel drive control ECU connector.

   2. Disconnect the C38 transfer shift actuator assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition A28-2 (HM1) or C38-1 (HM1) - Body ground Always 10 kΩ or higher A28-6 (HM2) or C38-2 (HM2) - Body ground Always 10 kΩ or higher

   
   
   • OK

     REPLACE TRANSFER SHIFT ACTUATOR ASSEMBLY (Click here)

   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR

3. Click here

   CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU AND TRANSFER SHIFT ACTUATOR ASSEMBLY - BODY GROUND)

   
   

   1. Disconnect the A28 4 wheel drive control ECU connector.

   2. Disconnect the C37 transfer shift actuator assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition A28-8 (TM1) or C37-1 (TM1) - Body ground Always 10 kΩ or higher A28-7 (TM2) or C37-2 (TM1) - Body ground Always 10 kΩ or higher

   
   
   • OK

     REPLACE TRANSFER SHIFT ACTUATOR ASSEMBLY (Click here)

   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR

4. Click here

   CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU AND DIFFERENTIAL LOCK SHIFT ACTUATOR - BODY GROUND)

   
   

   1. Disconnect the A28 4 wheel drive control ECU connector.

   2. Disconnect the f1 differential lock shift actuator connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition A28-3 (M1) or f1-3 - Body ground Always 10 kΩ or higher A28-9 (M2) or f1-2 - Body ground Always 10 kΩ or higher

   
   
   • OK

     REPLACE DIFFERENTIAL LOCK SHIFT ACTUATOR (Click here)

   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR