Suzuki RA410 Manual page 254

6-10 ENGINE
9. TROUBLESHOOTING FOR DTC
Based on the DTC indicated in Step 6 or 7 and referring to the applicable DTC diag. flow table in SECTION
6E1, locate the cause of the trouble, namely in a sensor, switch, wire harness, connector, actuator, ECM/PCM
or other part and repair or replace faulty parts.
10. CHECK FOR INTERMITTENT PROBLEM
Check parts where an intermittent trouble is easy to occur (e.g., wire harness, connector, etc.), referring to IN-
TERMITTENT AND POOR CONNECTION in SECTION 0A and related circuit of DTC recorded in Step 2.
11. FINAL CONFIRMATION TEST
Confirm that the problem symptom has gone and the engine is free from any abnormal conditions. If what has
been repaired is related to the DTC, clear the DTC once, perform DTC confirmation procedure referring to DTC
CONFIRMATION PROCEDURE in SECTION 6E1 and confirm that no malfunction DTC (a normal code) is
indicated.
ENGINE DIAGNOSIS TABLE
Condition
Hard starting
(Engine cranks OK)
Possible Cause
Engine and emission control system
out of order
Faulty CMP sensing rotor
Faulty idle air control system
Faulty ECT sensor or MAP sensor
Faulty ECM/PCM
Low compression
Compression leak from valve seat
Sticking valve stem
Weak or damaged valve springs
Compression leak at cylinder head gasket
Sticking or damaged piston ring
Worn piston, ring or cylinder
Others
Malfunctioning PCV valve
Reference Item
CMP sensing rotor inspection in
SECTION 6F1.
Diag. Flow Table B-4 in SECTION
6E1.
ECT sensor or MAP sensor in
SECTION 6E1.
Inspection of ECM/PCM and its
circuit in SECTION 6E1.
Compression check in SECTION 6A4.
Valve inspection in SECTION 6A4.
Valve inspection in SECTION 6A4.
Valve spring inspection in SECTION
6A4.
Cylinder head inspection in SECTION
6A4.
Piston ring inspection in SECTION
6A4.
Cylinder, piston and piston ring
inspection in SECTION 6A4.
PCV system inspection in SECTION
6E1.