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Inspection Procedure

WARNING: This page is about a different car, the 2004 Toyota Corolla and 2003 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FUSE (ECU-IG) 
    1. Remove the ECU-IG fuse from the instrument panel J/B.
    2. Check the continuity of the ECU-IG fuse.

      OK: Continuity 

      Fig 1: Identifying Fuse (ECU-IG)
      G02861231Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE FUSE 
    2. OK: GO TO NEXT STEP. 
  2. INSPECT TERMINAL VOLTAGE (B) 
    1. Remove the cruise control ECU assy with connector still connected.
    2. Turn the ignition switch to ON.
    3. Measure voltage between terminals 2 (B) and 16 (GND) of the cruise control ECU assy connector.

      OK: 

      Voltage: 10-16 V 

      Fig 2: Identifying Terminal Voltage (B)
      G02861232Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE (See  PROBLEM SYMPTOMS TABLE  ) 
    2. NG: GO TO NEXT STEP. 
  3. CHECK HARNESS AND CONNECTOR (BETWEEN CRUISE CONTROL ECU ASSY AND BODY GROUND) 
    1. Measure resistance between terminal 16 (GND) of the cruise control ECU assy connector and body ground.

      OK: 

      Resistance: Below 1 Ω 

      Fig 3: Identifying Connector Terminal (GND)
      G02861233Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: CHECK AND REPAIR HARNESS AND CONNECTOR BETWEEN CRUISE CONTROL ECU ASSY AND BATTERY 
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