Suzuki WagonR+ RB310 Service Manual page 2410

DTC P0120 (DTC No.13) THROTTLE POSITION CIRCUIT MALFUNCTION
CIRCUIT DESCRIPTION
Throttle
position
sensor
DTC DETECTING CONDITION
D Signal voltage high
D Signal voltage low
NOTE:
When DTC P0105, P0110, P0115 and/or P0120 are indicated together, it is possible that "Br/W" or "W/G"
circuit is open.
DTC CONFIRMATION PROCEDURE
1) Clear DTC, start engine and keep it at idle for 1 min.
2) Select "DTC" mode on scan tool and check DTC.
To other sensors
To other sensors
E21-10
E23-5
E21-22
D "Br/W" circuit open
D "Gr" circuit open or shorted to ground
D "W/G" circuit open or shorted to power or ground
D TP sensor malfunction
D ECM malfunction
NOTE:
When this DTC and P1700 are stored together,
also clear DTC stored in TCM after completion
of repair.
ENGINE DIAGNOSIS 6-51
POSSIBLE CAUSE