1A-154 Engine General Information and Diagnosis:
DTC P2102: Throttle Actuator Control Motor Circuit Low
S7RS0B1104068
Wiring Diagram
Refer to “DTC P2101: Throttle Actuator Control Motor Circuit Range / Performance”.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Start engine and run it for 1 min. or more.
4) Check DTC.
DTC Troubleshooting
NOTE
• When measuring circuit voltage, resistance and/or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors referring to “Inspection of ECM and Its Circuits”.
• Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and
confirm that the trouble has been corrected.
DTC detecting condition Trouble area
Power supply voltage of throttle actuator control circuit is
less than 5 V for specified time even if throttle actuator
control relay is turned on.
(1 driving detection logic)
• Throttle actuator control relay circuit
• Throttle actuator control relay
•ECM
Step Action Yes No
1 Was “Engine and Emission Control System Check”
performed?
Go to Step 2. Go to “Engine and
Emission Control
System Check”.
2 Throttle actuator control relay circuit check
1) Remove ECM from its bracket with ECM connectors
connected.
2) Check for proper connection of ECM connector at “E23-
45” and “E23-32” terminals.
3) Turn ON ignition switch.
4) Measure voltage between “E23-32” terminal of ECM
connector and engine ground.
Is voltage 10 – 14 V?
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
Go to Step 3.
3 Is “TH MOT” fuse in god condition? Go to Step 4 Replace fuse and check
for short in circuits
connected to this fuse.
4 Throttle actuator control relay circuit check
1) Remove throttle actuator control relay from individual
circuit fuse box No.1 with ignition switch turned OFF.
2) Check for proper connection to throttle actuator control
relay at “BLK/RED”, “YEL/BLU”, “BLU/ORN” and “RED/
YEL” wire terminals.
3) Measure voltage between engine ground and each
“BLK/RED”, “YEL/BLU” wire terminal with ignition switch
turned ON.
Is each voltage 10 – 14 V?
Go to Step 5. “BLK/RED” wire and/or
“YEL/BLU” wire is open
or high resistance.
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