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P1121 APS PWM Output Circuit Malfunction

AutoHex Online Help: Hyundai TERRACAN(HP) 2003
DTC TROUBLESHOOTING PROCEDURE

DTC P1121

THROTTLE POSITION SENSOR SIGNAL INVALID

DTC DETECTING CONDITION

Item

Detecting Contion

Possible cause

DTC Strategy

? Check for GROUND SHORT/OPE

? Open or short in circuit

Enable Conditions

?

Threshold Value

? TCU detects TPS data is FFH

Diagnostic Time

? for 0.2sec

Fail Safe

? TCU judges Throttle Opening is 0% for shifting.

? Line Pressure is full

? No Torque Reduction at shifting/Coast Down/L-UP.

Pass Criteria

? To detect TPS data is between 20h~ F5h for 2.0sec. continuously.