Inspection Procedure

1. Disconnect the distance control ECU and laser sensor connectors.
2. Measure the resistance according to the value(s) in the table below.

Standard: 

Fig 1: Disconnecting Distance Control ECU Connector

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Fig 2: Disconnecting Laser Sensor Connector

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NG: REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR 

OK: Go To Next Step. 

1. Reconnect the cruise control ECU (distance control ECU) connector.
2. Turn the ignition switch to the ON position.
3. Measure the voltage according to the value(s) in the table below.

   Standard: 

   CRUISE CONTROL ECU TERMINALS VOLTAGE SPECIFICATION
   
   

   Tester connection	Condition	Specified value
   D2-13 (IGB) - Body ground	Ignition SW ON	10 to 14 V

   Fig 3: Identifying Cruise Control ECU Terminals

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4. Check the signal waveform between terminal LRRD (D2-23) of the cruise control ECU (distance control ECU) and body ground.
   1. OK: 
   2. A waveform similar to that in the illustration to the left is output. 

HINT:

• Gauge set: 2 V/DIV, 5 ms/DIV
• Condition: Ignition switch ON

NG: REPLACE CRUISE CONTROL ECU ASSY (SEE  REPLACEMENT  ) 

Fig 4: Signal Waveform Graph

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OK: REPLACE LASER SENSOR (SEE  REPLACEMENT  )