Inspection Procedure

1. Check that the starter operates normally and that the engine starts.

1. NO: GO TO ENGINE TROUBLESHOOTING 

YES: Go to next step 

1. See input signal check on PRE-CHECK .
2. Check the indicator light when shifting into except D position.

OK: Go to next step 

The indicator light goes off when shifting into except D position. 

Fig 1: Input Signal And Indicator Light Blinking Pattern Chart

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1. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN (  PROBLEM SYMPTOMS TABLE  ) 

NG: Go to next step 

1. Turn the ignition switch to ON.
2. Measure voltage between terminal 4 (D) of cruise control ECU assy connector and body ground when shifting into D position and other positions.

OK: Go to next step 

1. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN (  PROBLEM SYMPTOMS TABLE  ) 

NG: Go to next step 

Fig 2: Identifying Terminal D Of Cruise Control ECU Assy

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Check for open and short circuit in harness and connector between cruise control ECU assy and park/ neutral position switch (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).

1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

CHECK AND REPLACE CRUISE CONTROL ECU ASSY (See  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  )