DTC P2102: Throttle Actuator Control Motor Circuit Low; DTC P2103: Throttle Actuator Control Motor Circuit High: Procedure

1. Disconnect the throttle body assembly connector.
   Fig 1: Identifying Throttle Body Assembly Connector Terminal

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2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   2 (M+) - 1 (M-)	20°C (68°F)	0.3 to 100 Ω

3. Reconnect the throttle body assembly connector.

NG → See step   5 

OK: Go to next step 

1. Disconnect the throttle body connector.
   Fig 2: Identifying ECM Connector And Throttle Body Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   B20-2 (M+) - B29-42 (M+)	Always	Below 1 Ω
   B20-1 (M-) - B29-41 (M-)	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   B20-2 (M+) or B29-42 (M+) - Body ground	Always	10 kΩ or higher
   B20-1 (M-) or B29-41 (M-) - Body ground	Always	10 kΩ or higher

4. Reconnect the ECM connector.
5. Reconnect the throttle body connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (THROTTLE BODY - ECM) 

OK: Go to next step 

1. Check for foreign objects between the throttle valve and the housing.

   OK

   No foreign objects between throttle valve and housing.

NG → REMOVE FOREIGN OBJECT AND CLEAN THROTTLE BODY ASSEMBLY 

OK: Go to next step 

1. Check if the throttle valve opens and closes smoothly.

   OK

   Throttle valve opens and closes smoothly.

NG → See step   6 

OK → See step   7