Suzuki WagonR+ RB310 Service Manual page 1811

6-1-48 GENERAL INFORMATION AND ENGINE DIAGNOSIS
DTC P0120 THROTTLE POSITION CIRCUIT MALFUNCTION
CIRCUIT DESCRIPTION
Throttle
position
sensor
DTC DETECTING CONDITION
D Signal voltage high
or
D Signal voltage low
NOTE:
D When DTC P0105, P0110, P0115 and/or P0120 are indicated together, it is possible that "BRN/WHT" cir-
cuit is open.
D When DTC P0105, P0120 and/or P0510 are indicated together it is possible that "WHT/GRN" 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 MAP sensor
To other sensors
D "BRN/WHT" circuit open
D "GRY" circuit open or shorted to ground
D "WHT /GRN" circuit open or shorted to power or
ground
D TP sensor malfunction
D ECM (PCM) malfunction
POSSIBLE CAUSE