Solara V6-3.3L (3MZ-FE) (2004)
c. Check the voltage.
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.
Fig. 4
With each connector still connected, measure the voltage between the body ground and these terminals (in this order):
1. terminal 1 of connector A at the ECU 5 V output terminal,
2. terminal 1 of connector B, and
3. terminal 1 of connector C.
2. Example results:
If your results match the examples above,an open circuit exists in the wire harness between terminal 1 of connector B and terminal 1 of
connector C.
3. CHECK SHORT CIRCUIT
a. If the wire harness is ground shorted (Fig. 5), locate the section by conducting a resistance check with the body ground.
b. Check the resistance with the body ground.