DESCRIPTION
When the transfer position switch is switched, the 2-4 terminal and LO terminal change to one of the following ON/OFF combinations listed in the table below.
Terminal |
2WD |
Between 2WD and H4 |
H4 |
Between H4 and L4 |
L4 |
---|---|---|---|---|---|
2-4 |
ON |
OFF |
ON |
OFF |
OFF |
LO |
OFF |
OFF |
ON |
OFF |
ON |
This DTC is detected if the transfer position switch 2-4 terminal and LO terminal signals are simultaneously received.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
---|---|---|---|
P279E |
Four Wheel Drive (4WD) Range Signal Circuit Range / Performance |
|
|
WIRING DIAGRAM
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - TRANSFER POSITION SWITCH) |
(a) Disconnect the F13 4 wheel drive control ECU connector.
(b) Disconnect the F15 transfer position switch connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F13-14 (2-4) - F15-2 (2-4) |
Always |
Below 1 Ω |
F13-13 (LO) - F15-3 (LO) |
Always |
Below 1 Ω |
F15-5 (GND) - Body ground |
Always |
Below 1 Ω |
F13-14 (2-4) or F15-2 (2-4) - Body ground |
Always |
10 kΩ or higher |
F13-13 (LO) or F15-3 (LO) - Body ground |
Always |
10 kΩ or higher |
F13-14 (2-4) or F15-2 (2-4) - F13-13 (LO) or F15-3 (LO) |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
2. |
CHECK TRANSFER POSITION SWITCH |
(a) Remove the transfer position switch with its connector still connected. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
F15-2 (2-4) - Body ground |
Ignition switch ON 2WD position |
Below 1.5 V |
Ignition switch ON H4 position |
Below 1.5 V |
|
Ignition switch ON L4 position |
10 to 14 V |
|
F15-3 (LO) - Body ground |
Ignition switch ON 2WD position |
10 to 14 V |
Ignition switch ON H4 position |
Below 1.5 V |
|
Ignition switch ON L4 position |
Below 1.5 V |
*a |
Component with harness connected (Transfer Position Switch) |
OK | ![]() |
REPLACE 4 WHEEL DRIVE CONTROL ECU |
NG | ![]() |
REPLACE TRANSFER POSITION SWITCH |
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT AIR CONDITIONER PRESSURE SENSOR (for Automatic Air Conditioning System)
(a) Check the wire harness.
(1) Disconnect the A34 air conditioner pressure sensor connector.
(2) Disconnect the A35 and A36 air conditioning amplifier assembly connector.
...
Open in One Side of Bus 2 Branch Line
DESCRIPTION
When the CAN bus main lines are normal (no open, short to ground, short to +B
or short between lines) and there is an ECU or sensor on the "Communication Bus
Check" screen that is indicated as not communicating or whose connection status
on the "Communication Bus Ch ...
Open in Bus 5 Main Bus Line
DESCRIPTION
There may be an open circuit in one of the CAN main bus lines when the resistance
between terminals 15 (CA5H) and 16 (CA5L) of the central gateway ECU (network gateway
ECU) is 70 Ω or higher.
Detection Item
Trouble Area
Resistance between ter ...