Suzuki GA413, Service Manual

Page: 445 / 1246

ENGINE AND EMISSION CONTROL SYSTEM 6E-35
DTC NO.23 CRANKSHAFT POSITION SENSOR CIRCUIT
(NO SIGNAL FROM CKP SENSOR EVEN THOUGH ENGINE STARTER SIGNAL HAS
BEEN INPUTTED FOR MORE THAN 2 SECONDS)
WIRING DIAGRAM
1. CKP sensing rotor
2. CKP sensor
3. CKP sensor connector
4. Shield wire
5. ECM connector (B)
6. ECM
TROUBLE SHOOTING
STEP ACTION YES NO
1 Did you perform “ENGINE DIAGNOSTIC FLOW
TABLE” in Section 6?
Go to Step 2. Go to“ENGINE DIAG-
NOSTIC FLOW TABLE”.
2 1) With ignition switch OFF position, disconnect
ECM electrical connectors.
2) Measure resistance from terminal “a” to “b” of
ECM connector.
Is resistance within 360-460 at 20 C (68 F)?
Go to Step 3. “W/Bl” or “R/Bl” wire
open or short.
Poor connection of CKP
sensor connector termi-
nal.
3 1) Perform “CKP Sensor On-vehicle Inspection” in
this section.
Is resistance within specified value?
Go to Step 4. Faulty CKP sensor.
4 1) Remove CKP sensor.
2) Visually inspect CKP sensor signal rotor for
damage.
Was any damage found?
Faulty CKP sensor sig-
nal rotor.
Poor connection of ECM
connector terminal.
If OK, substitute a
known-good ECM and
recheck CKP.
NOTE:
Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” in this section and
confirm that the trouble has been corrected.