Suzuki WagonR+ RB310 Service Manual page 596

Condition
Overheating
Inoperative thermostat
Poor water pump performance
Clogged or leaky radiator
Improper engine oil grade
Clogged oil filter or oil strainer
Poor oil pump performance
Faulty radiator fan control system
Dragging brakes
Slipping clutch
Blown cylinder head gasket
Poor gasoline mile-
Leaks or loose connection of high-tension
age
cord
Faulty spark plug (improper gap, heavy
deposits and burned electrodes, etc.)
Malfunctioning EGR valve
High idle speed
Poor performance of TP sensor, ECT sensor
or MAF sensor
Faulty fuel injector(s)
Faulty ECM
Low Compression
Poor valve seating
Dragging brakes
Slipping clutch
Thermostat out of order
Improper tire pressure
VVT system out of order
ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE) 6-2-25
Possible Cause Reference Item
"Thermostat Inspection" in Section 6B2.
"Water Pump Inspection" in Section
6B2.
"Radiator Inspection" in Section 6B2.
"Engine Oil and Oil Filter Replacement"
in Section 0B.
"Oil Pressure Check" in Section 6A2.
"Oil Pressure Check" in Section 6A2.
"Table B-7 Radiator Fan Control Sys-
tem Check" in this section.
"Diagnosis Table" in Section 5.
"Diagnosis Table" in Section 7C.
"Valves and Cylinder Head Inspection"
in Section 6A2.
"High-tension Cords Inspection" in Sec-
tion 6F2.
"Spark Plugs Inspection" in Section
6F2.
"EGR Valve Inspection" Section 6E2.
"Improper Engine Idling or Engine Fails
to Idle" in this table.
"TP Sensor On-Vehicle Inspection",
"ECT Sensor Inspection" or "Mass Air
Flow (MAF) and Intake Air Temperature
(IAT) Sensor Inspection" in Section
6E2.
"Table B-1 Fuel Injector Circuit Check"
in this section.
"Low Compression" in this table.
"Valves and Cylinder Head Inspection"
in Section 6A2.
"Diagnosis Table" in Section 5.
"Diagnosis Table" in Section 7C.
"Thermostat Inspection" in Section 6B2.
"Replacement Tires" in Section 3F.
"Oil Control Valve Inspection" in Section
6E2.