DIFFERENTIAL SYSTEM(w/ Differential Lock), Diagnostic DTC:P17C1

DTC Code DTC Name
P17C1 Rear Differential Lock Solenoid Circuit High

DESCRIPTION

This DTC is output when a malfunction is detected due to a battery short occurring in the differential lock coil drive circuit of the rear differential.

DTC No. Detection Item DTC Detection Condition Trouble Area
P17C1 Rear Differential Lock Solenoid Circuit High

  • Diagnosis Condition: Directly after ignition switch is turned to ON, or when rear differential is switched between free and locked (differential lock coil operating) with ignition switch turned to ON

  • Malfunction Status: Battery short in differential lock coil drive circuit

  • Malfunction Time: 0.05 seconds or more

  • Other: 1 trip detection logic

  • Wire harness and connector

  • 4 wheel drive control ECU

  • Differential lock coil

WIRING DIAGRAM

Refer to DTC P17C0.

Click here

PROCEDURE


  1. CHECK DIFFERENTIAL LOCK COIL


    1. Disconnect the C61 4 wheel drive control ECU connector.

    2. B003R4GC04
      *a

      Front view of wire harness connector

      (to 4 Wheel Drive Control ECU)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      C61-1 (SL+) or C61-5 (SL-) - Body ground Ignition switch ON Below 1 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE 4 WHEEL DRIVE CONTROL ECU Click here

    NG

  2. CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - DIFFERENTIAL LOCK COIL)


    1. Disconnect the C61 4 wheel drive control ECU connector.

    2. Disconnect the e1 differential lock coil connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      C61-1 (SL+) or e1-2 (M1) - Body ground Ignition switch ON Below 1 V
      C61-5 (SL-) or e1-1 (M2) - Body ground Ignition switch ON Below 1 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE DIFFERENTIAL LOCK COIL w/ Differential Lock: Click here
    REPLACE DIFFERENTIAL LOCK COIL for DANA Made w/ Differential Lock: Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR