Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM100000000VIQB |
Model Year Start: 2016 |
Model: Sienna |
Prod Date Range: [12/2015 -
] |
Title: MF1A (TRANSFER / 4WD / AWD): ACTIVE TORQUE CONTROL 4WD SYSTEM: C1298; Linear Solenoid Circuit; 2016 - 2020 MY Sienna [12/2015 - ] |
DTC
|
C1298
|
Linear Solenoid Circuit
|
DESCRIPTION
The 4WD 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
|
When the following continues for 1 second or more:
- With the current of 0.8 A or more, an open or short in the electromagnetic solenoid circuit occurs.
|
-
4WD fuse
-
Wire harness and connector
-
Electromagnetic control coupling
-
4WD control ECU
|
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 HARNESS AND CONNECTOR (4WD CONTROL ECU - BATTERY)
|
(a) Disconnect the ECU connector.
|
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
K1-9 (BSLC) - Body Ground
|
Always
|
11 to 14 V
|
Text in Illustration
*a
|
Rear view of wire harness connector
(to 4WD Control ECU)
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
2.
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INSPECT ELECTRO MAGNETIC CONTROL COUPLING (ELECTROMAGNETIC SOLENOID)
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(a) Disconnect the coupling connector.
|
|
(b) Measure the resistance according to the value(s) in the table below.
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
|
Text in Illustration
*a
|
Electromagnetic Solenoid
|
OK
|
|
|
3.
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CHECK HARNESS AND CONNECTOR (ELECTROMAGNETIC CONTROL COUPLING - 4WD CONTROL ECU)
|
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
K1-13 (SLC+) - 1 (BSF)
|
Always
|
Below 1 Ω
|
K1-32 (SLC-) - 2 (SLC)
|
Always
|
Below 1 Ω
|
K1-13 (SLC+) - Body ground
|
Always
|
10 kΩ or higher
|
K1-32 (SLC-) - Body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
|