Suzuki GRAND VITARA Owner's Manual page 184

1A-129 Engine General Information and Diagnosis:
Step
5 Ground circuit check
1) Turn ignition switch to OFF position.
2) Measure resistance between "BLK/YEL" wire terminal of
CKP sensor connector and engine ground.
Is measured resistance value less than 3
6 Was terminal "B+" voltage in Step 3 within specification?
7 Engine start signal check
1) Check starting motor circuit for opening and short
referring to Step 2 of "DTC P0616: Starter Relay Circuit
Low: " and Step 3 and 4 of "DTC P0617: Starter Relay
Circuit High: ".
Is check result satisfactory?
8 CKP sensor check
1) Check CKP sensor and sensor plate tooth referring to
"Camshaft Position (CMP) Sensor Inspection: in Section
1C".
Is check result satisfactory?
Action
Ω
?
Yes
Go to Step 6.
Go to Step 7.
Go to Step 8.
Substitute a known-
good ECM and recheck.
No
"BLK/YEL" wire is open
or high resistance.
"BLU/BLK" wire is open
circuit. If wire and
connection are OK,
substitute a known-
good ECM and recheck.
Repair or replace.
Replace CKP sensor
and/or sensor plate.