Suzuki Wagon R Plus RB310, Service Manual

Page: 505 / 846

6F2-4 IGNITION SYSTEM (M13 ENGINE)
Diagnosis
Ignition System Symptom Diagnosis
Condition Possible Cause Correction
Engine cranks, but will
not start or hard to
start (No spark) Blown fuse for ignition coil Replace.
Loose connection or disconnection of lead wire
or high-tension cord(s) Connect securely.
Faulty high-tension cord(s) Replace.
Faulty spark plug(s) Replace.
Faulty ignition coil Replace ignition coil assembly.
Faulty CKP sensor or CKP sensor plate Clean, tighten or replace.
Faulty CMP sensor or sensor rotor tooth of
camshaft Clean, tighten or replace.
Faulty ECM Replace.
Poor fuel economy or
engine performance Incorrect ignition timing Check related sensors and CKP
sensor plate.
Faulty spark plug(s) or high-tension cord(s) Adjust, clean or replace.
Faulty ignition coil assembly Replace.
Faulty CKP sensor or CKP sensor plate Clean, tighten or replace.
Faulty CMP sensor or sensor rotor tooth of
camshaft Clean, tighten or replace.
Faulty ECM Replace.