A SERVICE OF

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4-8 FI SYSTEM DIAGNOSIS
SHORT CIRCUIT CHECK (WIRE HARNESS TO GROUND)
Disconnect the negative cable from the battery.
Disconnect the connectors/couplers at both ends of the circuit
to be checked.
NOTE:
If the circuit to be checked branches to other parts as shown,
disconnect all connectors/couplers of those parts. Otherwise,
diagnosis will be misled.
Measure resistance between terminal at one end of circuit (A
terminal in figure) and body ground. If continuity is indicated,
there is a short circuit to ground between terminals A and C.
1 Other parts
*1 To other parts
Disconnect the connector/coupler included in circuit (coupler
B) and measure resistance between terminal A and body
ground.
If continuity is indicated, the circuit is shorted to the ground
between terminals A and B.
1 ECM
*1 To other parts
*1
5 V
*1