DESCRIPTION
This is the A-TRAC main switch circuit. When the A-TRAC switch is turned on with the transfer in L4, the A-TRAC function is available and the A-TRAC indicator light illuminates.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When replacing the master cylinder solenoid, perform calibration (See page
).
PROCEDURE
1. |
CHECK CAN COMMUNICATION LINE |
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Select CAN Bus Check from the System Selection Menu screen and follow the
prompts on the screen to inspect the CAN bus (See page
).
OK:
CAN Bus Check indicates no malfunctions in CAN communication.
NG | ![]() |
GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
|
2. |
INSPECT TRACTION CONTROL SWITCH (A-TRAC SWITCH) |
(a) Remove the A-TRAC switch (See page ).
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG | ![]() |
REPLACE TRACTION CONTROL SWITCH (A-TRAC SWITCH) |
|
3. |
CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - A-TRAC SWITCH) |
(a) Disconnect the A6 skid control ECU connector.
(b) Disconnect the U3 A-TRAC switch connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A6-13 (ATRC) - U3-8 (ATRC) |
Always |
Below 1 Ω |
A6-13 (ATRC) - Body ground |
Always |
10 k Ω or higher |
U3-5 (E) - Body ground |
Always |
Below 1 Ω |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
READ VALUE USING TECHSTREAM (A-TRAC INDICATOR LIGHT) |
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Enter the following menus: Chassis / ABS/VSC/TRAC / Data List.
(f) Check the condition of the A-TRAC switch by operating the Techstream.
ABS/VSC/TRAC
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
A-TRAC Indicator Light |
A-TRAC indicator light/ ON or OFF |
ON: Indicator light on ON: Indicator light off |
- |
OK:
The Techstream displays ON or OFF according to A-TRAC switch operation.
OK | ![]() |
GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
NG | ![]() |
REPLACE MASTER CYLINDER SOLENOID |
Rear Washer does not Operate
DESCRIPTION
The windshield wiper switch controls the rear washer motor and pump.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following
inspection procedure.
PROCEDURE
...
Room Temperature Sensor Circuit (B1411/11)
DESCRIPTION
The cooler thermistor (room temperature sensor) for the front seat is installed
in the instrument panel to detect the room temperature and control the heater and
air conditioner auto mode. The resistance of the room temperature sensor changes ...