Suzuki WagonR+ RB310 Service Manual page 2388

Condition
Excessive Ignition system out of order
hydrocarbon (HC) D Faulty spark plug
emission or carbon D Leaky or disconnected high-tension cord
monoxide (CO) D Faulty ignition coil with ignitor
Low compression
Engine and emission control system out of
order
D Lead contamination of three way catalytic
D Faulty evaporative emission control system
D Fuel pressure out of specification
D Closed loop system (A/F feed back
D Faulty injector(s)
D Faulty ECM
Others
D Engine not at normal operating temperature
D Clogged air cleaner
D Vacuum leaks
Excessive nitrogen Ignition system out of order
oxides (NOx)
D Improper ignition timing
emission Engine and emission control system out of
order
D Lead contamination of catalytic converter
D Faulty EGR system (if equipped)
D Fuel pressure out of specification
D Closed loop system (A/F feed back
D Faulty injector(s)
D Faulty ECM
Possible Cause
converter
compensation) fails
– Faulty TP sensor
– Poor performance of ECT sensor or MAP
sensor
compensation) fails
– Faulty TP sensor
– Poor performance of ECT sensor or MAP
sensor
ENGINE DIAGNOSIS 6-29
Referring Item
Spark plugs in Section 6F1
High-tension cords in Section 6F1
Ignition coil assembly in Section
6F1
Refer to "Low compression"
section
Check for absence of filler neck
restrictor
EVAP control system in Section
6E
Diagnostic Flow Table B-3
TP sensor in Section 6E
ECT sensor or MAP sensor in
Section 6E
Diagnostic Flow Table B-1
See section 6F1
Check for adsence of filler neck
restrictor.
EGR system in Section 6E
Diagnostic Flow Table B-3
TP sensor in Section 6E
ECT sensor or MAP sensor in
Section 6E
Diagnostic Flow Table B-1