P1023
2UR-FSE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1023: Camshaft Position Signal Output "B" Circuit
DTC P1023 - Camshaft Position Signal Output "B" Circuit
DTC P2614 - Camshaft Position Signal Output Circuit / Open
DESCRIPTION
The VVT-iE system changes the valve timing with the motor.
The camshaft control timing motor is equipped with a self diagnostic function, which is used to output diagnosis signals (VTM) to the ECM.
MONITOR DESCRIPTION
This DTC is output when a malfunction in the intake side camshaft timing control motor's rotation sensor is detected. The camshaft timing control motor is equipped with a self diagnostic function, which is used to output the duty ratio (when normal: 80%) as a signal (VTM) to the ECM. If the ECM receives a duty signal of 40%, a DTC is output immediately (1 trip detection logic). If the engine is idled for 10 seconds, a DTC is detected.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
INSPECTION PROCEDURE
HINT:
- When viewed from the rear of the engine assembly, Bank 1 is on the left side and Bank 2 is on the right side.
- Read freeze frame data using the intelligent tester or Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
PROCEDURE
1. REPLACE CAMSHAFT TIMING CONTROL MOTOR (for Bank 1 or Bank 2)
(a) Replace the camshaft timing control motor Removal.
NEXT -- Continue to next step.
2. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
(a) Connect the intelligent tester or Techstream to the DLC3.
(b) Put the engine in inspection mode Inspection Mode Procedure.
(c) Idle it for 10 seconds.
(d) Enter the following menus:
(1) Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
(2) Techstream - Select: Powertrain / Engine and ECT / Trouble Codes.
(e) Read the DTCs.
Result
B -- GO TO DTC CHART
A -- END