Suzuki Vitara (LY) 2016-2017 · Service Manual M16A · Diagnostic Information and Procedures

Poor engine power

Precautions: General safety (00)

Perform troubleshooting referring to the following points when ECM has detected no DTC and no abnormality has been found in Visual Inspection:M16A and Engine Basic Inspection:M16A.
Condition Possible Cause Action
Poor engine power
Faulty spark plug
Faulty ignition coil assembly
Faulty knock sensor
Clogged fuel hoses or pipes
Malfunctioning fuel pump
Air drawn in through intake manifold gasket or throttle body gasket
Check air intake system.
Engine overheating
Condition “Engine overheating”
Poor performance of ECT sensor or MAP sensor
Faulty electric throttle body assembly
Faulty APP sensor
Faulty fuel injector
Faulty ECM
Dragging brakes
Condition “Dragging brakes” in Brake Symptom Diagnosis
Slipping clutch (M/T model)
Condition “Slipping” in Clutch System Symptom Diagnosis:5 M/T
Low compression
VVT system out of order