A SERVICE OF

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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.