Toyota 2GR-FE Manual page 501

TYPICAL ENABLING CONDITIONS
Monitor runs whenever following DTCs are not present
TYPICAL MALFUNCTION THRESHOLDS
P2120:
One of the following conditions is met:
VPA voltage when VPA2 is 0.04 V or more
VPA voltage
P2122:
VPA voltage when VPA2 is 0.04 V or more
P2123:
VPA voltage
P2125:
One of the following conditions is met:
VPA2 voltage when VPA 0.04 V or more
VPA2 voltage when VPA 0.4 to 3.45 V
P2127:
VPA2 voltage when VPA is 0.04 V or more
P2128:
VPA2 voltage when VPA is 0.4 to 3.45 V
P2138:
Either of following conditions A or B is met:
Condition A
Difference between VPA and VPA 2 voltages
Condition B
VPA voltage
VPA2 voltage
COMPONENT OPERATING RANGE
Parameter
VPA voltage
VPA2 voltage
Difference between VPA and VPA2 voltages
FAIL-SAFE
When any of DTCs P2120, P2121, P2122, P2123, P2125, P2127, P2128 and P2138 are set, the ECM
enters fail-safe mode. If either of the 2 sensor circuits malfunctions, the ECM uses the remaining circuit to
calculate the accelerator pedal position to allow the vehicle to continue driving. If both of the circuits
malfunction, the ECM regards the accelerator pedal as being released. As a result, the throttle valve is
closed and the engine idles.
Fail-safe mode continues until a pass condition is detected, and the engine switch is then turned off.
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
None
-
0.4 V or less
4.8 V or more
0.4 V or less
4.8 V or more
-
1.2 V or less
4.8 V or more
1.2 V or less
4.8 V or more
-
-
0.02 V or less
-
0.4 V or less
1.2 V or less
Standard Value
0.4 V to 4.8 V
0.5 V to 4.8 V
More than 0.02 V
ES–345
ES