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:
Disassembly
DISASSEMBLY
PROCEDURE
1. INSPECT 3RD GEAR THRUST CLEARANCE
(a) Using a dial indicator, measure the 3rd gear thrust clearance.
Standard clearance:
0.200 to 0.490 mm (0.0079 to 0.0192 in.)
If the clearance is outside the specification, replace the 3rd gear,
thrust washer, c ...
Removal
REMOVAL
PROCEDURE
1. REMOVE ROOF HEADLINING ASSEMBLY (for LED Type Stop Light)
for Double Cab:
(See page
)
for Access Cab:
(See page
)
2. REMOVE CENTER STOP LIGHT ASSEMBLY (for Bulb Type Stop Light)
(a) Apply protective tape around the center stop light as ...
Inspection
INSPECTION
PROCEDURE
1. INSPECT TRANSMISSION WIRE
(a) Measure the resistance according to the value(s) in the table below.
Text in Illustration
*a
Component without harness connected
(Transmission Wire)
Standard Resistance: ...
