Inspection Procedure

INSPECT TERMINAL VOLTAGE (OD - BODY GROUND)

Fig 1: Inspecting Voltage Between Terminal OD And Ground
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the cruise control ECU connector.
2. Turn the ignition switch ON.
3. Measure the voltage between terminal OD of cruise control ECU and body ground.
  OK:
  
  Voltage: 10 - 14 V
  
  OK: CHECK AND REPLACE CRUISE CONTROL ECU ASSY (See CRUISE CONTROL SYSTEM )
  
  NG
INSPECT TERMINAL VOLTAGE (OD1 - E1)

Fig 2: Measuring Voltage Between Terminal OD1 And E1 Of ECM Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Measure the voltage between terminal OD1 and E1 of ECM.
  OK:
  
  Voltage: 10-14 V
  
  OK: REPAIR OR REPLACE HARNESS OR CONNECTOR
  
  NG
  
  CHECK AND REPLACE ECM