Check Short Circuit

Fig 1: Checking Short Circuit

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If the wire harness is ground shorted (Fig 1), locate the article by conducting a resistance check with the body ground (below).

Check the resistance with the body ground.

Fig 2: Checking Resistance Between Terminals 1 And 2 Of Connector A And Body Ground

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect connectors A and C and measure the resistance between terminals 1 and 2 of connector A and the body ground.

Resistance: 10 kΩ or higher

HINT:

Measure the resistance while lightly shaking the wire harness vertically and horizontally.

Fig 2:

CONNECTOR TERMINALS RESISTANCE

Tester Connection	Specified Condition
Connector A terminal 1 -Body ground	Below 1 kΩ
Connector A terminal 2 -Connector C terminal 2	10 kΩ or higher

If your results match the examples above, a short circuit exists between terminal 1 of connector A and terminal 1 of connector C.

Disconnect connector B and measure the resistance between terminal 1 of connector A and the body ground, and terminal 1 of connector B2 and the body ground.

Fig 3: Checking Resistance Between Terminal 1 Of Connector A And Body Ground

Fig 3:

CONNECTOR TERMINALS RESISTANCE

Tester Connection	Specified Condition
Connector A terminal 1 -Body ground	10 kΩ or higher
Connector B2 terminal 1 -Body ground	Below 1 kΩ

If your results match the examples above, a short circuit exists between terminal 1 of connector B2 and terminal 1 of connector C.