Toyota Celica 2005 Repair Manual page 303

DI−104
TYPICAL MALFUNCTION THRESHOLDS
Detection Criteria
Closed throttle position learning value
COMPONENT OPERATING RANGE
Parameter
Closed throttle position learning value
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand−held tester or the OBD II scan tool. Freeze frame data records the
engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help deter-
mine if the vehicle was running or stopped, if the engine was warmed up or not, if the air−fuel ratio was lean
or rich, as well as other data from the time when a malfunction occurred.
1 Are there any other codes (besides DTC P0121) being output?
PREPARATION:
(a) Connect the hand−held tester or the OBD II scan tool to the DLC3.
(b) Turn the ignition switch ON and push the hand−held tester or the OBD II scan tool main switch ON.
(c) When using the hand−held tester, enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC
INFO / CURRENT CODES.
CHECK:
Read the DTCs.
RESULT:
Display (DTC output)
"P0121" and other DTCs
P0121
HINT:
If any other codes besides P0121 is output, perform the troubleshooting for those DTCs first.
A
Go to relevant DTC chart (See page DI−42).
2005 CELICA (RM1131U)
DIAGNOSTICS − ENGINE (1ZZ−FE)
26.254° (1.05 V) or more or less than 7.456° (0.298 V)
Less than 26.254° (1.05 V) and 7.456° (0.298 V) or more
B Replace throttle position sensor.
302
Threshold
Standard Value
Proceed to
A
B