Suzuki Intruder VZR1800 Service Manual page 265

INSPECTION
Step 1
1) Remove the fuel tank. (#6-3)
2) Turn the ignition switch OFF.
3) Check the ISC valve coupler for loose or poor contacts.
4) If OK, then check the ISC valve lead wire continuity.
5) Disconnect the ISC valve coupler and ECM coupler.
(#5-37)
6) Check the continuity between terminals A and m, terminals
B and F, terminals C and Z, terminals D and l, terminals
E and F, and terminals F and Y.
"
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 Lbl, W/Y, Dgr, R/Bl or Lg wire open.
7) After repairing the trouble, clear the DTC using SDS tool.
(#5-26)
FI SYSTEM DIAGNOSIS
1
1
2
ECM coupler (Harness side)
(Black)
5-71
(Gray)