Suzuki VZ800 Service Manual page 214

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)
4) If OK, then measure the STVA resistance (between Black
wire A and Pink wire B) and (between Green wire C and W/
Bl wire D).
 STVA resistance: Approx. 6.5 Ω
 09900-25008: Multi-circuit tester set
 Tester knob indication: Resistance (Ω)
Is the resistance OK?
• B/Lg, P/W, Green and Black wire open or
shorted to ground, or poor Y, [, d and f con-
nection
• If wire and connection are OK, intermittent trou-
YES 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.
• Loose or poor contacts on the ECM coupler
NO
• Replace the STVA with a new one.
5) After repairing the trouble, clear the DTC using SDS tool.
(5-25)
(Terminal – Ground)
(Black A – Pink B)
(Green C – W/Bl D)
2
2
2
ECM coupler (Harness side)
FI SYSTEM 5-57