Suzuki Wagon R Manual page 1119

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
D Faulty fuel injector resistor
D Faulty ECM (PCM)
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 Fuel pressure out of specification
D Closed loop system (A/F feed back
D Faulty injector
D Faulty fuel injector resistor
D Faulty ECM (PCM)
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
GENERAL INFORMATION AND ENGINE DIAGNOSIS 6-1-27
Spark plugs in Section 6F
High-tension cords in Section 6F
Ignition coil assembly in Section
6F
Refer to "Low compression"
section
Check for absence of filler neck
restrictor
EVAP control system in Section
6E1
Diagnostic Flow Table B-3
TP sensor in Section 6E1
ECT sensor or MAP sensor in
Section 6E1
Diagnostic Flow Table B-1
Fuel injector resistor in Section 6E1
See section 6F1
Check for absence of filler neck
restrictor.
Diagnostic Flow Table B-3
TP sensor in Section 6E1
ECT sensor or MAP sensor in
Section 6E1
Diagnostic Flow Table B-1
Fuel injector resistor in Section 6E1
Referring Item