Toyota Camry (XV70): Linear Solenoid Circuit (C1298)
DESCRIPTION
The 4WD ECU assembly receives signals from each sensor to control clutch fluid pressure for limiting the center differential operation, which distributes torque according to the driving conditions.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|---|---|---|---|
|
C1298 | Linear Solenoid Circuit |
When all of the following continue for 1 second or more:
|
|
|
Vehicle Condition | |||
|---|---|---|---|
|
Pattern 1 | Pattern 2 | ||
|
Diagnosis Condition | IG1 voltage is 9.5 V or more, the current requested by the 4WD linear solenoid (transmission coupling assembly) is 0 A. |
○ | - |
|
IG1 voltage is 9.5 V or more, the current requested by the 4WD linear solenoid (transmission coupling assembly) is greater than 0.8 A. |
- | ○ | |
|
Malfunction Status | Short occurs in the 4WD linear solenoid circuit. |
○ | - |
|
Open occurs in the 4WD linear solenoid circuit. |
- | ○ | |
|
Detection Time | 1 second or more |
1 second or more | |
|
Number of Trips | 1 trip |
1 trip | |
HINT:
DTC will be output when conditions for either of the patterns in the table above is met.
WIRING DIAGRAM
PROCEDURE
| 1. |
CHECK HARNESS AND CONNECTOR (4WD ECU ASSEMBLY - TRANSMISSION COUPLING ASSEMBLY) |
| (a) Disconnect the K145 4WD ECU assembly connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
K145-2 (SLC+) - K145-1 (SLC-) |
20 |
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Control Module Communication Bus Off (U0073,U0100,U0126,U0129)
DESCRIPTION The 4WD ECU assembly inputs the signals sent from the ECM, skid control ECU (brake actuator assembly) and steering sensor via CAN communication.
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Reassembly
REASSEMBLY CAUTION / NOTICE / HINT
HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
PROCEDURE 1. INSTALL FRONT AXLE OUTBOARD JOINT BOOT
(a) Secure the drive shaft in a vise between aluminum plates. NOTICE:
Do not overtighten the
On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE
1. INSPECT BRAKE FLUID LEVEL IN RESERVOIR
(a) Check the fluid level. If the brake fluid level is lower than the MIN line, inspect for brake fluid leaks and brake pad wear. If necessary, refill the reservoir with brake fluid to the MAX line after repair or repl
