Inspection Procedure

1. Turn the engine switch off.
2. Disconnect the 4WD control ECU connector (A32).
3. Measure the resistance according to the value(s) in STANDARD RESISTANCE DESCRIPTION TABLE  .

Standard resistance 

Fig 1: Identifying A32 Connector Terminals

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NG: REPAIR OR REPLACE 4WD CONTROL ECU BRANCH LINE OR CONNECTOR (CANH, CANL) 

OK: Go to next step. 

1. Measure the resistance according to the value(s) in WIRE HARNESS (IG1, GND) (RESISTANCE)  .

   Standard resistance 

   WIRE HARNESS (IG1, GND) (RESISTANCE)
   
   

   Tester Connection	Condition	Specified Value
   A32-30 (GND) - Body ground	Always	Below 1 ohms

2. Measure the voltage according to the value(s) in WIRE HARNESS (IG1, GND) (VOLTAGE)  .

Standard voltage 

Fig 2: Checking Wire Harness (IG1, GND)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE 4WD CONTROL ECU