Suzuki SY413 Service Manual page 2592

6-16 ENGINE (ENGINE WITHOUT WU TWC)
2. PROBLEM SYMPTOM CONFIRMATION
Check if what the customer claimed in Step 1 is actually found in the vehicle and if that symptom is found, wheth-
er it is identified as a failure. (This step should be shared with the customer if possible.)
When the symptom is not actually found, possibility is:
D The symptom occurs under certain conditions.
----- Retry with the vehicle under different conditions.
D The trouble occurred only temporarily and normal operation has been restored.
----- Perform Step 3 and if the diagnostic trouble code is indicated, inspect according to the flow chart for that
DTC.
3. DIAGNOSTIC TROUBLE CODE (DTC) CHECK, RECORD AND CLEAR
DTCs are indicated by the malfunction indicator lamp ("CHECK ENGINE" light). (Refer to "DIAGNOSTIC
TROUBLE CODE(S) CHECK" in Section 6E3.) When a DTC is indicated by this lamp, it means existence of
a malfunction in the system represented by that code but whether is still exists (current) or it occurred in the past
and has gone (history) is unknown. To know it, clear this DTC once (Refer to "DIAGNOSTIC TROUBLE
CODE(S) CLEAR" in Section 6E3.), perform Step 6 "TEST DRIVE AND/OR PROBLEM SYMPTOM" of "EN-
GINE DIAGNOSTIC FLOW CHART" in this section and then check DTC again as described in Step 7. Attempt
to diagnose the trouble based on the DTC recorded in this step or failure to clear the DTC in this step may mis-
lead the diagnosis or make diagnosing difficult. Even after checking the DTC with the SUZUKI SCAN TOOL,
diagnosis should be performed according to this flow chart to check ECM for proper self-diagnosis function.
4. VISUAL INSPECTION
As a preliminary step, perform visual check of the following items that support proper function of the engine.
D Engine oil ----- level, leakage
D Engine coolant ----- level, leakage
D Fuel ----- level, leakage
D Air cleaner element ----- dirt, clogging
D Battery ----- fluid level, corrosion of terminal
D Water pump belt ----- tension, damage
D Throttle cable ----- play, installation
D Vacuum hoses of air intake system ----- disconnection, looseness, deterio-
ration
D Connectors of electric wire harness ----- disconnection, friction
D Fuses ----- burning
D Parts ----- installation, bolt ----- looseness
D Parts ----- deformation
D Other parts that can be checked visually
Also add following items at engine start.
D Indicator, warning lights in combination meter ----- ON
(indicating abnormality in system) or OFF
D Abnormal air being inhaled from air intake system
D Exhaust system ----- leakage of exhaust gas, noise
D Other parts that can be checked visually
INSPECTION ITEM REFERRING Section
Section 0B
Section 0B
Section 0B
Section 0B
Section 0B
Section 6E3
Section 8
Section 8
Section 8
Section 6K