Suzuki SY413 Service Manual page 3468

6-44 ENGINE GENERAL INFORMATION AND DIAGNOSIS
DTC No.14 INJECTOR NEEDLE SENSOR CIRCUIT MALFUNCTION
CIRCUIT DESCRIPTION
1. Injector needle sensor
2. ECM
DTC DETECTING CONDITION
D No injector needle sensor signal for 2 seconds at engine
cranking.
Reference
Connect oscilloscope between terminals E92-7, E92-24 of ECM connector connected to ECM and check CKP sen-
sor signal.
Oscilloscope Waveforms
Waveform at idle speed
DTC CONFIRMATION PROCEDURE
1) Clear DTC and crank engine for 2 sec.
2) Select "DTC" mode on scan tool and check DTC.
POSSIBLE CAUSE
D Injector needle sensor circuit open or short.
D Injector damaged.
D
Injector needle sensor malfunction.
D ECM malfunction.
Waveform at 2500 rpm