Toyota 2GR-FE Manual page 484

ES–328
DTC
DTC
SYSTEM DESCRIPTION
The throttle actuator is operated by the ECM and opens and closes the throttle valve using the gears.
The opening angle of the throttle valve is detected by the Throttle Position (TP) sensor, which is mounted
on the throttle body. The TP sensor provides feedback to the ECM. This feedback allows the ECM to
appropriately control the throttle actuator and monitor the throttle opening angle as the ECM responds to
driver inputs.
HINT:
This ETCS (Electronic Throttle Control System) does not use a throttle cable.
DTC No.
ES
P2102
P2103
MONITOR DESCRIPTION
The ECM monitors the electrical current through the electronic actuator, and detects malfunctions and
open circuits in the throttle actuator based on this value. If the current is outside the standard range, the
ECM determines that there is a malfunction in the throttle actuator. In addition, if the throttle valve does
not function properly (for example, stuck on), the ECM determines that there is a malfunction. The ECM
then illuminates the MIL and sets a DTC.
Example:
When the electrical current is more than 10 A, or less than 0.5 A and the throttle actuator duty ratio
exceeds 80 %, the ECM interprets this as the current being outside the standard range, and illuminates
the MIL and sets a DTC.
If the malfunction is not repaired successfully, a DTC is set when the engine is quickly revved up to a
high rpm several times after the engine has idled for 5 seconds after engine start.
MONITOR STRATEGY
Related DTCs
Required Sensors/Components (Main)
Required Sensors/Components (Related)
Frequency of Operation
Duration
MIL Operation
Sequence of Operation
TYPICAL ENABLING CONDITIONS
All:
Monitor runs whenever following DTCs are not present
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
P2102 Throttle Actuator Control Motor Circuit Low
P2103 Throttle Actuator Control Motor Circuit High
DTC Detection Condition
Conditions (a) and (b) continue for 2.0 seconds (1 trip
detection logic):
(a) Throttle actuator duty ratio 80 % or more
(b) Throttle actuator current 0.5 A or less
Either of the following conditions is met:
• Hybrid IC diagnosis signal fails
• Hybrid IC current limiter port fails
• Open in throttle actuator circuit
• Throttle actuator
• ECM
• Short in throttle actuator circuit
• Throttle actuator
• Throttle valve
• Throttle body assembly
• ECM
P2102: Throttle actuator current (low current)
P2103: Throttle actuator current (high current)
Throttle actuator (throttle body)
None
Continuous
P2102 (Throttle actuator current (low current)): 2 seconds
P2103 (Throttle actuator current (high current)): 25 times or 0.6
seconds
Immediate
None
None
Trouble Area