- 4WD fuse
- Wire harness and connector
- Electromagnetic control coupling
- 4WD control ECU
| Last Modified: 08-28-2024 | 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. |
|
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
![2016 - 2020 MY Sienna [12/2015 - ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: ELECTRONIC CIRCUIT INSPECTION PROCEDURE](/t3Portal/stylegraphics/info.gif)
).
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 |
|
|
2. |
INSPECT ELECTRO MAGNETIC CONTROL COUPLING (ELECTROMAGNETIC SOLENOID) |
|
(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 |
| NG |
|
|
|
3. |
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 |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|