Inspection Procedure

1. Disconnect the A36 sensor connector.
Fig 1: Disconnecting A36 Laser Sensor Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage of the wire harness side connector.

   Standard voltage 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   A36-5 (IGB) - Body ground	Ignition switch on	10 to 14 V

NG:  Go to step  3

OK: Go to Next Step 

1. Disconnect the ECM A24 connector.
Fig 2: Disconnecting A24 ECM Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value (s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   A36-1 (LGND) - A24-31 (LGND)	Always	Below 1 Ω
   A36-1 (LGND) - Body ground	Always	10 kΩ or higher
   A36-2 (SGND) - Body ground	Always	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  

1. Disconnect the cruise control ECU (distance control ECU) connector.
Fig 3: Disconnecting Cruise Control ECU Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value (s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   A20-13 (IGB) - A36-5 (IGB)	Always	Below 1 Ω
   A20-13 (IGB) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE