AUTOMATIC TRANSMISSION (4 A/T) 7B-15
2. Diagnostic Trouble Code (DTC) Check, Record and Clearance
To check DTC, refer to “DTC CHECK” in this section. When a DTC exists, it means existence of a malfunction in
the system represented by that code but whether it still exists (current) or it occurred in the past and has gone
(history) is unknown. To know it, clear this DTC once (Refer to “DTC CLEARANCE” in this section.), perform test
drive and/or “TROUBLE SYMPTOM CONFIRMATION” in this section and then check DTC again as described in
“DTC CHECK”. Attempt to diagnose the trouble based on the DTC recorded in this step only or failure to clear
the DTC in this step may mislead 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 TCM for proper self-
diagnosis function.
3 and 4. Visual Inspection
As a preliminary step, perform visual check of the following items that support proper function of the automatic
transmission.
5. Trouble Symptom Confirmation
Check if what the customer claimed in “CUSTOMER COMPLAINT ANALYSIS” is actually found in the vehicle
and if that symptom is found, whether 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 :
• The symptom occurs under certain conditions.
----- Retry with the vehicle under different conditions.
• The trouble occurred only temporarily and normal operation has been restored.
----- Perform “DTC CHECK” and if the diagnostic trouble code is indicated, inspect according to the flow
table for that DTC.
6 and 7. Rechecking and Record of DTC
Refer to “DTC CHECK” in this section.
INSPECTION ITEM REFERRING SECTION
• Engine oil ----- level, leakage Section 0B
• Engine coolant ----- level, leakage Section 0B
• A/T fluid ----- level, leakage, color Section 0B
• Battery ----- fluid level, corrosion of terminal
• A/T fluid hoses ----- disconnection, looseness, deterioration
• Connectors of electric wire harness ----- disconnection, friction Section 8
• Fuses ----- burning Section 8
• Parts ----- installation, bolt ----- looseness
• Parts ----- deformation
• Other parts that can be checked visually
Also add following items at engine start.
• Indicator, warning lights in combination meter ----- ON
(indicating abnormality in system) or OFF
Section 8C
• Other parts that can be checked visually
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