Suzuki VL800 Service Manual page 569

4) Disconnect the ISC valve coupler and ECM coupler.
5) Check the continuity between terminals A and g, terminals
B and ^, terminals C and i, terminals D and \.

When using the multi-circuit tester, do not strongly
touch the terminal of the ECM coupler with a needle
pointed tester probe to prevent the terminal damage
or terminal bend.
 ISC valve wire continuity: Continuity ()
 09900-25008: Multi-circuit tester set
09900-25009: Needle pointed probe set
 Tester knob indication: Continuity test ()
Is the continuity OK?
YES Go to Step 2.
NO Bl, Y, G/W or Br wire open.
Step 2
1) Remove the throttle body. (Page 18-40)
2) Check the continuity between each ISC va ve terminal and
ground.
 ISC valve continuity: ∞ Ω (Infinity)
3) If OK, then measure the resistance between terminals A and
B, terminals C and D.
 ISC valve resistance: Approx. 80 Ω at 20 °C (68 °F)
Is the resistance OK?
YES If wire is OK, intermittent trouble or faulty ECM.
Replace the ISC valve with a new one.
NO
(Page 18-53)
(Terminal – Ground)
(Terminal A – Terminal B)
(Terminal C – Terminal D)
VL800/C/TK9 ('09-MODEL) 18-29
1
1
ECM coupler (Harness side)
2