TERMINALS OF ECU
1. CHECK 4WD CONTROL ECU
(a) Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
F47-6 (RLY1) - F46-4 (GND) |
G - W-B |
Rear differential lock actuator limit switch |
Ignition switch ON Rear differential lock actuator limit switch on |
Below 1.5 V |
Ignition switch ON Rear differential lock actuator limit switch off |
11 to 14 V |
|||
F47-7 (RLY2) - F46-4 (GND) |
P - W-B |
Rear differential lock actuator limit switch |
Ignition switch ON Rear differential lock actuator limit switch on |
Below 1.5 V |
Ignition switch ON Rear differential lock actuator limit switch off |
11 to 14 V |
|||
F47-11 (R) - F46-4 (GND) |
SB - W-B |
Rear differential lock switch |
Ignition switch ON Rear differential lock switch on |
Below 1.5 V |
Ignition switch ON Rear differential lock switch off |
11 to 14 V |
|||
F47-14 (RLP) - F46-4 (GND) |
V - W-B |
Rear differential lock detection switch |
Ignition switch ON Rear differential lock detection switch on |
Below 1.5 V |
Ignition switch ON Rear differential lock detection switch off |
9.5 to 14 V |
|||
F46-8 (M1) - F46-4 (GND) |
LG - W-B |
Differential lock actuator motor |
Ignition switch ON Differential lock switch off → on (Differential lock switch OFF → ON (For 5 seconds after power supplied or until switching of limit switch is complete during FREE to LOCK switching)) |
11 to 14 V |
Ignition switch ON Differential lock switch off → on (Differential lock actuator motor stopped) |
Below 1.5 V |
|||
F46-3 (IG) - F46-4 (GND) |
R - W-B |
IG power |
Ignition switch ON |
11 to 14 V |
F46-4 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
F46-7 (M2) - F46-4 (GND) |
L - W-B |
Differential lock actuator motor |
Ignition switch ON Differential lock switch on → off (Differential lock switch ON → OFF (For 5 seconds after power supplied or until switching of limit switch is complete during LOCK to FREE switching)) |
11 to 14 V |
Ignition switch ON Differential lock switch on → off (Differential lock actuator motor stopped) |
Below 1.5 V |
|||
F47-19 (CANH) - F46-4 (GND) |
G - W-B |
CAN communication line |
Ignition switch ON |
Pulse generation (see waveform 1) |
F47-20 (CANL) - F46-4 (GND) |
W - W-B |
CAN communication line |
Ignition switch ON |
Pulse generation (see waveform 2) |
(b) Using an oscilloscope, check waveform 1.
Waveform 1 (Reference)
Item |
Content |
---|---|
Terminal No. (Symbols) |
F47-19 (CANH) - F46-4 (GND) |
Tool setting |
1 V/DIV., 10 μsec./DIV. |
Condition |
Engine stopped and ignition switch ON |
*1 |
Waveform 1 |
HINT:
The waveform varies depending on the CAN communication signal.
(c) Using an oscilloscope, check waveform 1.
Waveform 2 (Reference)
Item |
Content |
---|---|
Terminal No. (Symbols) |
F47-20 (CANL) - F46-4 (GND) |
Tool setting |
1 V/DIV., 10 μsec./DIV. |
Condition |
Engine stopped and ignition switch ON |
*1 |
Waveform 2 |
HINT:
The waveform varies depending on the CAN communication signal.
Inspection
INSPECTION
PROCEDURE
1. INSPECT PROPELLER SHAFT ASSEMBLY
(a) Using a dial indicator, check the propeller shaft runout.
Maximum runout:
0.4 mm (0.0157 in.)
If the shaft runout is more than the maximum, replace the shaft.
...
Diagnosis System
DIAGNOSIS SYSTEM
1. CHECK DLC3
(a) Check the DLC3 (See page ).
2. FUNCTION OF POWER STEERING WARNING LIGHT
(a) When a malfunction is detected in the power steering system, the power steering
warning light in the combination meter comes on to inform the ...