Suzuki Engine 2002 GRAND VITARA SQ625, Руководство по обслуживанию

Страница: 97 / 834

6-92 ENGINE GENERAL INFORMATION AND DIAGNOSIS (G16/J20 ENGINES)
DTC CONFIRMATION PROCEDURE
1) Connect scan tool to DLC with ignition switch OFF.
2) Turn ON ignition switch and clear DTC, pending DTC and freeze frame data by using scan tool.
3) Crank engine for 3 seconds or more and keep it at idle for 1 min. if engine start.
4) Check DTC and pending DTC by using scan tool.
TROUBLESHOOTING (DTC P0340/DTC No.42)
NOTE:
Check to make sure that the following conditions are satisfied when using this “DTC Confirmation
Procedure”.
• Intake air temp. : –8°C, 18°F or higher
• Engine coolant temp. : –8 – 110°C (18 – 230°F)
• Altitude (barometric pressure) : 2400 m, 8000 ft or less (560 mmHg, 75 kPa or more)
Step Action Yes No
1 Was “Engine Diag. Flow Table” performed? Go to Step 2. Go to “Engine Diag.
Flow Table”.
2 Is engine cranked? Go to Step 3. Go to Section 6G or
6G1.
3 Is there DTC P1500 (Engine starter signal circuit)? Go to DTC P1500
Diag. Flow Table. Go to Step 4.
4 Check CMP Sensor and connector for proper installa-
tion.
Is CMP sensor installed properly and connector con-
nected securely? Go to Step 5. Correct.
5 Check Wire Harness and Connection.
1) Disconnect connector from CMP sensor.
2) Check for proper connection to CMP sensor at
each terminal.
3) If OK, turn ignition switch ON and check for volt-
age between “BLU/BLK” and “PPL/RED” termi-
nals of sensor connector (1) disconnected.
Is voltage 10 – 14 V?
Go to Step. 6. “BLU/BLK” or “PPL/
RED” wire open, short
or poor connection.
6 Check for voltage between “YEL/BLU” and “PPL/
RED” terminals of sensor connector disconnected.
Is voltage 4 – 5 V? Go to Step 7. “YEL/BLU” wire open,
short or poor connec-
tion.
If wire and connection
are OK, substitute a
known-good ECM
(PCM) and recheck.
7 Is G16 engine model? Go to Step 8. Go to Step 10.