Suzuki Jimny Service Manual page 384

Condition
Excessive hydrocar-
bon (HC) emission or
Excessive carbon mon-
oxide (CO) emission
Excessive nitrogen
oxides (NOx) emission
Possible Cause
• Faulty ignition coil
• Fuel pressure out of specification
• Lead contamination of three way catalytic
converter
• Malfunctioning PCV system
• Faulty EVAP control system
• Closed loop system (A/F feed back com-
pensation) fails
– Faulty TP sensor
– Faulty ECT sensor or MAP sensor
– Faulty oxygen sensor
• Faulty injector
• Faulty ECM
Low compression
• Fuel pressure out of specification
• Lead contamination of three way catalytic
converter
• Closed loop system (A/F feed back com-
pensation) fails
– Faulty TP sensor
– Faulty ECT sensor or MAP sensor
– Faulty oxygen sensor
• Faulty injector
• Faulty ECM
• Faulty EGR system (if equipped)
ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-27
Reference Item
Ignition coil assembly in Section 6F.
Diagnostic Flow Table B-3
Maintenance in Section 6K.
PCV system in Section 6E.
EVAP control system in Section 6E.
Check oxygen sensor output voltage.
Refer to DTC P0130 (No.14) Table in
this section.
Diagnostic Flow Table B-1
Inspection of ECM and its circuit in
this section.
Previously outlined.
Diagnostic Flow Table B-3
Maintenance in Section 6K.
Check oxygen sensor output voltage
Refer to DTC P0130 (No.14) Table in
this section.
Diagnostic Flow Table B-1
Inspection of ECM and its circuit in
this section.
EGR system in Section 6E.