FI SYSTEM DIAGNOSIS 5-59
Step 2
1) Turn the ignition switch OFF.
2) Disconnect the STVA lead wire coupler.
3) Check the continuity between each terminal and ground.
$ STVA continuity: ∞ Ω (Infinity)
(Terminal – Ground)
4) If OK, then measure the STVA resistance (between Black
wire
A and Pink wire
B) and (between Green wire
C and
W/BI wire
D).
$ STVA resistance: Approx. 7 Ω
(B/Lg
A – P/W
B)
(Green
C – W/B
D)
! 09900-25008: Multi-circuit tester set
% Tester knob indication: Resistance (Ω)
Is the resistance OK?
5) After repairing the trouble, clear the DTC using SDS tool.
(#5-26)
2
2
YES
• W/B, P/W, Green and B/Lg wire open or shorted
to ground, or poor
1,
2,
H and
I connection
• If wire and connection are OK, intermittent trou-
ble or faulty ECM.
• Recheck each terminal and wire harness for
open circuit and poor connection.
• Replace the ECM with a known good one, and
inspect it again.
NO
• Loose or poor contacts on the ECM coupler.
• Replace the STVA with a new one.
ECM coupler (Harness side)
2
(Black) (Gray)
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