DESCRIPTION
The AWD control ECU receives signals from each sensor to control clutch pressure to distribute torque according to the driving conditions.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
C1298/98 |
When the following continues for 1 second or more: - With the current of the 0.8 A or more, an open or short in the electromagnetic solenoid circuit occurs. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
HINT:
Check the condition of each related circuit connector before troubleshooting
(See page ).
PROCEDURE
1. |
CHECK WIRE HARNESS (AWD CONTROL ECU - BATTERY) |
(a) Disconnect the ECU connector. |
|
(b) Measure the voltage of the wire harness side connector.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D38-9 (BSLC) - Body Ground |
Always |
11 to 14 V |
*1 |
Rear view of wire harness connector (to AWD Control ECU) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
2. |
INSPECT ELECTRO MAGNETIC CONTROL COUPLING (ELECTROMAGNETIC SOLENOID) |
(a) Remove the coupling connector. |
|
(b) Measure the resistance of the solenoid.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
1 (BSF) - 2 (SLC) |
Always |
2.2 to 2.6 Ω |
1 (BSF) - Body ground |
Always |
10 kΩ or higher |
2 (SLC) - Body ground |
Always |
10 kΩ or higher |
*1 |
Electromagnetic Solenoid |
NG | ![]() |
REPLACE ELECTRO MAGNETIC CONTROL COUPLING |
|
3. |
CHECK WIRE HARNESS (ELECTROMAGNETIC CONTROL COUPLING - AWD CONTROL ECU) |
(a) Disconnect the ECU connector. |
|
(b) Measure the resistance of the wire harness side connector.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D38-13 (SLC+) - O1-1 (BSF) |
Always |
Below 1 Ω |
D38-32 (SLC-) - O1-2 (SLC) |
Always |
Below 1 Ω |
D38-13 (SLC+) - Body ground |
Always |
10 kΩ or higher |
D38-32 (SLC-) - Body ground |
Always |
10 kΩ or higher |
*1 |
Front view of wire harness connector (to Electromagnetic Solenoid) |
*2 |
Rear view of wire harness connector (to AWD Control ECU) |
OK | ![]() |
REPLACE AWD CONTROL ECU |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Data List / Active Test
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches,
sensors, actuators and other items to be read without removing any parts. This non-intrusive
inspection can be very useful bec ...
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE FUEL SENDER GAUGE
2. SEPARATE FUEL SUCTION PLATE SUB-ASSEMBLY
(a) Disconnect the fuel pump connector from the fuel suction plate.
NOTICE:
Do not damage the wire harness.
...
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably needs adjustment
or repair. Contact your Toyota dealer as soon as possible.
- Visible symptoms
• Fluid leaks under the vehicle
(Water dripping from the air conditioning after use i ...