Diagnosis - Suzuki Jimny Service Manual

SYSTEM WIRING DIAGRAM
1. Ignition switch
2. Main relay
3. Ignition coil assembly for No.1 and No.4 spark plugs
4. Ignition coil assembly for No.2 and No.3 spark plugs
5. CMP sensor
6. CKP sensor
Condition
Engine cranks, but will
not start or hard to
start (No spark)
Poor fuel economy or
engine performance
7. No.1 spark plug
8. No.2 spark plug
9. No.3 spark plug
10. No.4 spark plug
11. Sensed information (MAP sensor, ECT sensor, IAT sensor, TP sensor, Knock sensor, VSS, Park/
Neutral position signal, Electric load signal, Engine start signal, Test switch terminal)

Diagnosis

Possible Cause
Blown fuse for ignition coil
Loose connection or disconnection of lead wire
or high-tension cord(s)
Faulty high-tension cord(s)
Faulty spark plug(s)
Faulty ignition coil
Faulty CKP sensor or CKP sensor plate
Faulty ECM
Incorrect ignition timing
Faulty spark plug(s) or high-tension cord(s)
Faulty ignition coil assembly
Faulty CKP sensor or CKP sensor plate
Faulty ECM
IGNITION SYSTEM (ELECTRONIC IGNITION SYSTEM 6F-3
Correction
Replace.
Connect securely.
Replace.
Adjust, clean or replace.
Replace ignition coil assembly.
Clean, tighten or replace.
Replace.
Check related sensors and CKP
sensor plate.
Adjust, clean or replace.
Replace.
Clean, tighten or replace.
Replace.