Toyota Celica 2005, Repair Manual

Page: 592 / 2497

− DIAGNOSTICS ENGINE (2ZZ − GE)
DI − 393
2005 CELICA (RM1131U)
DTC No. DTC Detection Condition
Main trouble
Condition (a) of DTC P0120, P0122, P0123, P0220, P0222 or P0223 continues
for 10 sec. with idling, but for 2 sec. without idling
(Open or short in throttle position sensor circuit)
P0122 (a) VTA1 x 0.2 V
S Throttle position sensor
S VTA1 circuit short
S VC circuit open
S ECM
P0123 (a) VTA1 y 4.8 V
S Throttle position sensor
S VTA1 circuit open
S E2 circuit open
S VC and VTA1 circuits are short − circuited
S ECM
P0120
Detection conditions for DTCs P0122 and P0123 are not satis-
fied but condition (a) is satisfied
(a) VTA1 x 0.2 V or VTA1 y 4.8 V
S
Throttle position sensor
S ECM
P0222 (a) VTA2 x 0.5 V
S Throttle position sensor
S VTA2 circuit short
S VC circuit open
S ECM
P0223 (a) VTA2 y 4.8 V and 0.2 x VTA1 x 1.8 V
S Throttle position sensor
S VTA2 circuit open
S E2 circuit open
S
VC and VTA2 circuits are short − circuited
S ECM
P0220
Detection conditions for DTCs P0222 and P0223 are not satis-
fied but condition (a) is satisfied
(a) VTA2 x 0.5 V or VTA2 y 4.8 V and 0.2 x VTA1 x 1.8 V
S Throttle position sensor
S
ECM
P2135
Condition (a) continues for 0.5 sec. or more, or
condition (b) continues for 0.4 sec. or more:
(a) |VTA1 − VTA2| x 0.02 V
(b) VTA1 x 0.2 V and VTA2 x 0.5 V
S VTA1 and VTA2 circuits are short − circuited
S Throttle position sensor
S ECM
HINT:
S
After confirming DTCs, use the hand − held tester or the OBD II scan tool to confirm the throttle valve
opening percentage and closed throttle position switch condition.
S
The THROTTLE POS means the VTA1 signal and the THROTTLE POS #2 means the VTA2 signal.
Reference (Normal condition):
Tester display Accelerator pedal released Accelerator pedal fully depressed
THROTTLE POS 6 to 20 % 64 to 96 %
THROTTLE POS #2 2.15 to 3.05 V 4.5 to 5.5 V
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