Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: 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.

Detection Item

DTC Detection Condition

Trouble Area

P17C0

Rear Differential Lock Solenoid Circuit Low

  • 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: Short to ground 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

PROCEDURE

PROCEDURE

1.

CHECK DIFFERENTIAL LOCK COIL

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

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

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

Always

10 kΩ or higher

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

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

Always

10 kΩ or higher

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

Always

10 kΩ or higher

OK

REPLACE DIFFERENTIAL LOCK COIL

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

Invalid Data Received from Vehicle Dynamics Control Module (U0416)
DESCRIPTION This DTC is detected if a wheel speed malfunction signal is sent from the skid control ECU (brake actuator assembly). DTC No. Detection Item DTC Detect ...

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. D ...

Other materials:

Detachable pole antenna
The antenna can be removed. ■ Removing the antenna Place the included wrench around the antenna. When not in use, the wrench is stored in glove box. Loosen the antenna with the wrench and remove it. ■ Installing the antenna Tighten the antenna by one hand until it will not t ...

Terminals Of Ecu
TERMINALS OF ECU CHECK ECM HINT: The standard voltage, resistance and waveform between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals is also indicated. The result of checks should be compared with the standar ...

Inspection
INSPECTION PROCEDURE 1. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY (a) When there is a malfunction such as noise from a speaker or no sound at all, replace the speaker with a new one and check that the malfunction disappears. OK: Malfunction disappears. HINT: Connect the connectors to th ...

© 2011-2021 Copyright www.ttguide.net