Toyota FJ Cruiser (GSJ 10, 15 series). Instruction - part 87
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES–303
ES
HINT:
When any of these DTCs are set, check the APP sensor voltage by selecting the following menu items on
an intelligent tester: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / ACCEL POS #1 and
ACCEL POS #2.
HINT:
Accelerator pedal positions are expressed as voltages.
MONITOR DESCRIPTION
When either of the output voltages of VPA or VPA2 deviates from the standard range, or the difference
between the output voltages of the 2 sensor circuits is less than the threshold, the ECM determines that
there is a malfunction in the APP sensor. The ECM then illuminates the MIL and sets a DTC.
Example:
When the output voltage of VPA drops to below 0.4 V for more than 0.5 seconds when the accelerator
pedal is fully depressed, DTC P2122 is set.
If the malfunction is not repaired successfully, a DTC is set 2 seconds after the engine is next started.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
P2120:
Trouble Areas
ACCEL POS #1
When Accelerator
Pedal Released
ACCEL POS #2
When Accelerator
Pedal Released
ACCEL POS #1
When Accelerator
Pedal Depressed
ACCEL POS #2
When Accelerator
Pedal Depressed
VCP circuit open
0 to 0.2 V
0 to 0.2 V
0 to 0.2 V
0 to 0.2 V
Open or ground short in VPA circuit
0 to 0.2 V
1.2 to 2.0 V
0 to 0.2 V
3.4 to 5.0 V
Open or ground short in VPA2 circuit
0.5 to 1.1 V
0 to 0.2 V
2.6 to 4.5 V
0 to 0.2 V
EPA circuit open
4.5 to 5.0 V
4.5 to 5.0 V
4.5 to 5.0 V
4.5 to 5.0 V
Normal condition
0.5 to 1.1 V
1.2 to 2.0 V
2.6 to 4.5 V
3.4 to 5.0 V
Related DTCs
P2120: Accelerator Pedal Position (APP) sensor 1 range check (fluctuating)
P2122: APP sensor 1 range check (low voltage)
P2123: APP sensor 1 range check (high voltage)
P2125: APP sensor 2 range check (fluctuating)
P2127: APP sensor 2 range check (low voltage)
P2128: APP sensor 2 range check (high voltage)
P2138: APP sensor range check (correlation)
Required Sensors/Components (Main)
APP sensor
Required Sensors/Components (Related)
-
Frequency of Operation
Continuous
Duration
0.5 seconds: P2120, P2122, P2125 and P2127
2.0 seconds: P2123, P2128 and P2138
MIL Operation
Immediate
Sequence of Operation
None
Monitor runs whenever following DTCs not present
None
Ignition switch
ON
Electronic throttle actuator power
ON
Either of the following conditions is met:
Condition 1 or 2
1. VPA1 voltage when VPA2 voltage is 0.04 V or more
0.4 V or less
2. VPA1 voltage
4.8 V or more