Dtc P0340 (Dtc No.42) Camshaft Position Sensor Circuit Malfunction - Suzuki 2000 Grand Vitara SQ625 Service Manual

6-1-92 ENGINE (H25 ENGINE)
DTC P0340 CAMSHAFT POSITION SENSOR CIRCUIT MALFUNCTION
(DTC No.42)
WIRING DIAGRAM
TERMINAL ARRANGEMENT OF ECM (PCM) COUPLER (VIEWED FROM HARNESS SIDE)
SYSTEM DESCRIPTION
CMP sensor detects REF signal and POS signal.
_ REF signal: 6 pulses/1 revolution of camshaft. Each of REF signals has different wavelength. Based on REF
signal, ECM (PCM) judges which cylinder is at TDC.
_ POS signal: 360 pulses/1 revolution of camshaft. Each of POS signals has equivalent wavelength. Based on
POS signal, ECM (PCM) judges the wavelength of REF signals, engine speed and piston position.
DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITION
Engine start signal is input but CMP sensor signal is not input
for 5 sec.
CMP sensor signal is input less than 10 while 2 CKP sensor
signal is input.
TROUBLE AREA
CMP sensor
CMP sensor circuit
Engine start signal circuit
ECM (PCM)
1. CMP sensor
2. Main relay