Stratus Coupe L4-2.4L VIN G (2003)
Air/Fuel Mixture: Testing and Inspection
IDLE MIXTURE CHECK
Required Special Tool:
MB991502: Scan Tool (MUT-II)
1. Before inspection, set vehicles in the following condition:
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Engine coolant temperature: 80 - 95 °C (176 - 203 °F)
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Lights and all accessories: OFF
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Transaxle: Neutral (P range on vehicles with A/T)
CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or
disconnecting scan tool MB991502.
2. Connect scan tool MB991502 to the data link connector:
3. Check that the basic ignition timing is within the standard value.
Standard value: 5 ± 3 °BTDC
4. Start the engine and increase the engine speed to 2,500 rpm for 2 minutes.
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Set the CO, HC tester.
6. Check the CO contents and the HC contents at idle.
Standard value:
CO contents: 0.5 % or less
HC contents: 100 ppm or less
7. If the CO and HC contents do not remain inside the standard value; check the following items:
NOTE: Replace the catalytic converter when the CO and HC contents do not remain inside the standard value, even though the result of the
inspection is normal for all items.
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Diagnosis output
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Closed-loop control (When the closed-loop control is carried out normally, the output signal of the heated oxygen sensor changes between 0 -
400 mV and 600 - 1,000 mV at idle.)
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Fuel pressures
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Injector
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Ignition coil, spark plug cable, spark plug
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EGR system and EGR valve leak
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Evaporative emission control system
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Compression pressure
