Inspection Procedure: Procedure

WARNING: This page is about a different car, the 2010 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT SPEED SENSOR INSTALLATION
1. Check the speed sensor (SP2) installation.
  
  Fig 1: Identifying No Clearance Between Sensor And Transmission Case
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK
  
  The installation bolt is tightened properly and there is no clearance between the sensor and transmission case.
NG → SECURELY INSTALL SPEED SENSOR OR REPLACE SPEED SENSOR

OK: Go to next step

INSPECT SPEED SENSOR (SP2)

Disconnect the speed sensor connector from the transmission.

Fig 2: Identifying Speed Sensor SP2 Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard resistance

Tester Connection	Specified Condition 20°C (68°F)
1 - 2	560 to 680 Ω

NG → REPLACE SPEED SENSOR (SP2)

OK: Go to next step

CHECK HARNESS AND CONNECTOR (SPEED SENSOR - ECM)

Connect the speed sensor connector.

Fig 3: Identifying ECM E4 Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Disconnect the ECM connector.

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

Standard resistance

Tester Connection	Specified Condition 20°C (68°F)
E4-23 (SP2+) - E4-22 (SP2-)	560 to 680 Ω

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

Standard resistance (Check for short)

Tester Connection	Specified Condition
E4-23 (SP2+) - Body ground	10 kΩ or higher
E4-22 (SP2-) - Body ground	↑

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK → REPLACE ECM