- Turn the engine switch off.
- Turn the engine switch on (IG) and turn the Techstream on [A].
- Start the engine.
- With the vehicle stationary, fully depress and release the accelerator pedal [B].
- Idle the engine for 2 seconds or more [C].
- Enter the following menus: Powertrain / Engine / Utility / All Readiness.
- Input the DTC: P0120, P0121, P0122, P0123, P0220, P0222, P0223 or P2135.
- Check the DTC judgment result [D].
HINT
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or UNKNOWN, perform steps [B] and [D] again.
- If the test result is UNKNOWN, enter the following menus: Powertrain / Engine / Trouble Codes / Pending.
- Read Pending DTCs.
HINT
If a pending DTC is output, the system is malfunctioning.
- If the test result is INCOMPLETE or UNKNOWN and no pending DTC is output, perform a universal trip and check for permanent DTCs
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/DTC
Check / Clear.
HINT
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.
FAIL-SAFE
When any of these DTCs, as well as other DTCs relating to electronic throttle control system malfunctions are set, the ECM enters fail-safe mode.
During fail-safe mode, the ECM cuts the current to the throttle actuator, and the throttle valve is returned to a 6锟斤拷 throttle angle by the return spring.
The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel-cut) and ignition timing, in accordance with the
accelerator pedal opening angle, to allow the vehicle to continue at a minimal speed. If the accelerator pedal is depressed firmly and gently, the
vehicle can be driven slowly.
Fail-safe mode continues until a pass condition is detected, and the engine switch is then turned off.
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