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4·46
FI
SYSTEM
DIAGNOSIS
Step 2
1) Turn the ignition switch OFF.
2) Disconnect the STVA lead wire coupler.
3) Check the continuity between each wire and ground.
_ STVA
continuity:
00
n (Infinity)
If OK, then measure the STVA resistance. (between Pink and
Black wires) and (between W/BI and Green wires)
_ STVA resistance: Approx. 6.5 n
(@ Pink - 8 Black)
(@ W/BI - 8 Green)
iTWtl
09900-25008: Multi
circuit
tester set
~
Tester
knob
indication: Resistance
(n)
Is the resistance OK?
• Loose or poor contacts on the STVA coupler.
•
If wire and connection are OK, intermittent trou-
ble or faulty ECM.
YES
•
Recheck each terminal and wire harness for
open circuit and poor connection.
•
Replace the ECM with new one, and inspect it
again.
NO
Replace the STVA with a new one.