Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Fail-safe Chart

FAIL-SAFE CHART

1. FAIL-SAFE OPERATION AND DEACTIVATION CONDITION

DIFFERENTIAL SYSTEM (w/ Differential Lock)

DTC No.

Fail-safe Operation

Fail-safe Deactivation Condition

U0122

All switching prohibited

When rear differential is locked, rear differential switches to free

CAN communication signal from skid control ECU is received and ignition switch is turned from off to ON

U0416

for 4WD:

Switching from 2WD to H4 and rear differential free to locked prohibited When rear differential is locked, rear differential switches to free

for 2WD:

Switching from rear differential free to locked prohibited

When rear differential is locked, rear differential switches to free

Wheel speed sensor malfunction signals from skid control ECU return to normal and ignition switch is turned from off to ON

P163B

for 4WD:

Switching from 2WD to H4 and rear differential free to locked prohibited When rear differential is locked, rear differential switches to free

for 2WD:

Switching from rear differential free to locked prohibited

When rear differential is locked, rear differential switches to free

4 wheel drive control ECU internal circuit returns to normal and ignition switch is turned from off to ON

P17BB

Switching from rear differential free to locked prohibited

When rear differential is locked, rear differential switches to free

Differential lock indicator switch signal returns to normal and ignition switch is turned from off to ON

P17BC

Switching from rear differential free to locked prohibited

When rear differential is locked, rear differential switches to free

Differential lock indicator switch signal returns to normal and ignition switch is turned from off to ON

P17C0

Switching from rear differential free to locked prohibited

When rear differential is locked, rear differential switches to free

Differential lock coil drive circuit of rear differential recovers from ground short and ignition switch is turned from off to ON

P17C1

Switching from rear differential free to locked prohibited

When rear differential is locked, rear differential switches to free

Differential lock coil drive circuit of rear differential recovers from battery short and ignition switch is turned from off to ON

P17CC

Switching from rear differential free to locked prohibited

When rear differential is locked, rear differential switches to free

Differential lock switch signal returns to normal and ignition switch is turned from off to ON

Dtc Check / Clear
DTC CHECK / CLEAR 1. CHECK DTC (a) Check the DTCs. (1) Turn the ignition switch off. (2) Connect the Techstream to the DLC3. (3) Turn the ignition switch to ON. (4) Turn the Techstream on. (5) ...

Freeze Frame Data
FREEZE FRAME DATA 1. FREEZE FRAME DATA (a) When a DTC is stored, the 4 wheel drive control ECU stores the current vehicle state as Freeze Frame Data. HINT: Freeze Frame Data at the time a DTC is ...

Other materials:

Road Test
ROAD TEST 1. PROBLEM SYMPTOM CONFIRMATION (a) Based on the result of the customer problem analysis, try to reproduce the symptoms. If the problem is that the transmission does not shift up or down, or that the shift point is too high or too low, conduct the following road test referring to t ...

Rear Power Outlet Socket
Components COMPONENTS ILLUSTRATION ILLUSTRATION Installation INSTALLATION PROCEDURE 1. INSTALL POWER OUTLET SOCKET ASSEMBLY (a) Install the clamp. (b) Connect the connector. (c) Using a torx socket wrench T30, install the 4 screws and the power outlet socket assemb ...

Lost Communication with ECM (U0100,U0142,U0155)
DESCRIPTION DTC No. DTC Detecting Condition Trouble Area U0100 No communication with ECM CAN communication system ECM U0142 No communication with main body ECU ...

В© 2011-2020 Copyright www.ttguide.net