Suzuki 2000 Grand Vitara SQ625 Service Manual page 79

DTC P0340 (DTC No.42) CAMSHAFT POSITION SENSOR CIRCUIT MALFUNCTION
WIRING DIAGRAM
G16 Engine
Reference
Connect oscilloscope between terminals C51-2-26 and C51-3-26 (ground) of ECM (PCM) connector connected
to ECM (PCM) and check CMP sensor signal.
Oscilloscope Waveforms
G16 Engine
2 V / Div.
Waveforms at specified idle speed
DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITION
D CMP sensor signal is not inputted for 3 sec. even
though engine start signal is being inputted.
J20 Engine
J20 Engine
2 V / Div.
20 ms / Div.
D CMP sensor circuit
D CMP sensor
D Engine starter signal circuit
D ECM (PCM)
ENGINE DIAGNOSIS (G16 / J20 ENGINES) 6-75
Waveforms at specified idle speed
TROUBLE AREA
1. Signal rotor on camshaft
2. CMP sensor
3. To main relay
20 ms / Div.