Dtc P0120 (Dtc No.21, 22) Throttle Position Circuit Malfunction - Suzuki Engine 2002 GRAND VITARA SQ420 Service Manual

DTC P0120 (DTC No.21, 22) Throttle Position Circuit Malfunction

WIRING DIAGRAM
1. Throttle position sensor
DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITION
Following conditions are detected for 5 sec. continuously.
• Engine running
• Signal voltage low or high
DTC CONFIRMATION PROCEDURE
1) Connect scan tool to DLC with ignition switch OFF.
2) Turn ON ignition switch and clear DTC, pending DTC and freeze frame data by using scan tool and run
engine at idle speed for 10 sec. or more.
3) Check DTC and pending DTC by using scan tool.
ENGINE GENERAL INFORMATION AND DIAGNOSIS (G16/J20 ENGINES) 6-67
2. ECM (PCM)
TROUBLE AREA
• TP sensor circuit open or short
• TP sensor
• ECM (PCM)