P1126

DTC P1126 Magnetic Clutch Circuit

CIRCUIT DESCRIPTION

DTC Detecting Condition:

Magnetic clutch is mounted between the throttle motor and the valve, and it connects the throttle motor with the throttle valve. Therefore, the throttle motor opens and closes the throttle valve through the magnetic clutch.

If the electric throttle control system has a malfunction, the magnetic clutch separates the throttle motor from the throttle valve so that the throttle valve cannot be operated by the throttle motor.

If this DTC is stored, the ECM shuts down the power for the throttle motor and the magnetic clutch, and the throttle valve is fully closed by the return spring.

However, the opening angle of the throttle valve can be controlled by the accelerator pedal through the throttle cable.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunction Thresholds:

The ECM monitors both the magnetic clutch current and the throttle position sensor to confirm proper operation of the throttle motor and magnetic clutch. If the clutch current is out of the range, the ECM will interpret this as a malfunction of the magnetic clutch. If the throttle position sensor value does not change when the throttle motor is operated, the ECM will conclude that the magnetic clutch is "stuck".

If the ECM detects a malfunction in the magnetic clutch, it will:
- Illuminate the MIL and set a DTC.
- Disconnect the electrical supply to the throttle motor.
- Disengage the magnetic clutch (With the magnetic clutch disengaged, the throttle motor is disconnected from the throttle valve).

Wiring Diagram:

INSPECTION PROCEDURE

Step 1:

Step 2 - 3:

Step 4:

HINT: Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, as well as other data from the time when a malfunction occurred.