Highlander 2WD V6-3.3L (3MZ-FE) Hybrid (2006)
1. In a circuit in which voltage is applied to the ECU connector terminal, an open circuit can be checked by conducting a voltage check.
With each connector still connected, measure the voltage between the body ground and these terminals (in this order): 1) terminal 1 of
connector A, 2) terminal 1 of connector B, and 3) terminal 1 of connector C.
If the results match the examples given, an open circuit exists in the wire harness between terminal 1 of connector B and terminal 1 of
connector C.
Check For Short Circuit
CHECK FOR SHORT CIRCUIT
a. If the wire harness is ground shorted (Fig. 5), locate the section by conducting a resistance check with the body ground (given).
b. Check the resistance with the body ground.