Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Rear Differential Lock Solenoid Circuit High (P17C1)

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 (See page PROCEDURE ).

PROCEDURE

1.

CHECK DIFFERENTIAL LOCK COIL

(a) Disconnect the 4 wheel drive control ECU connector.

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

F12-1 (SL+) or F12-5 (SL-) - Body ground

Ignition switch ON

Below 1 V

Text in Illustration

*a

Front view of wire harness connector

(to 4 Wheel Drive Control ECU)

OK

REPLACE 4 WHEEL DRIVE CONTROL ECU

NG

2.

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

(a) Disconnect the F12 4 wheel drive control ECU connector.

(b) Disconnect the D28 differential lock coil connector.

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

F12-1 (SL+) or D28-2 (SL+) - Body ground

Ignition switch ON

Below 1 V

F12-5 (SL-) or D28-1 (SL-) - Body ground

Ignition switch ON

Below 1 V

OK

REPLACE DIFFERENTIAL LOCK COIL

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

Rear Differential Lock Solenoid Circuit Low (P17C0)
DESCRIPTION This DTC is output when a malfunction is detected due to a short to ground occurring in the differential lock coil drive circuit of the rear differential. DTC No. ...

Rear Differential Lock Control SW Stuck ON (P17CC)
DESCRIPTION This DTC is output when a malfunction of the differential lock switch is detected. DTC No. Detection Item DTC Detection Condition Trouble Area ...

Other materials:

Brake Warning Light Remains ON
DESCRIPTION The skid control ECU (brake actuator assembly) is connected to the combination meter assembly via CAN communication. If any of the following is detected, the brake warning light remains on: The skid control ECU (brake actuator assembly) connector is disconnected from the ...

System Diagram
SYSTEM DIAGRAM ...

System Description
SYSTEM DESCRIPTION 1. TOUCH SWITCH OUTLINE Touch switches are touch-sensitive (interactive) switches operated by touching the screen. When a switch is pressed, the outer film bends in to contact the inner glass at the pressed position. By doing this, the voltage ratio is measured and the pre ...

В© 2011-2019 Copyright www.ttguide.net