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:

Air Conditioning Compressor Magnetic Clutch Circuit
DESCRIPTION When the air conditioning amplifier assembly is turned on, a magnetic clutch on signal is sent from the MGC terminal of the air conditioning amplifier assembly. Then, the MG CLT relay turns on to operate the magnetic clutch assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NO ...

Short in Curtain Shield Squib RH Circuit (B1830/57-B1833/57)
DESCRIPTION The front passenger side curtain shield squib circuit consists of the airbag sensor assembly and the curtain shield airbag assembly RH. The circuit signals the SRS to deploy when airbag deployment conditions are met. These DTCs are set when a malfunction is detected in the front pas ...

Inspection
INSPECTION PROCEDURE 1. INSPECT TIE ROD END SUB-ASSEMBLY (a) Flip the ball joint stud back and forth 5 times as shown in the illustration before installing the nut. (b) Using a torque wrench, turn the nut continuously at a rate of 2 to 4 seconds per turn and check the torque reading on the ...

© 2011-2023 Copyright www.ttguide.net