Mazda Mazda6 Workshop Manual Supplement page 885

FOREWORD
Outline
• When the customer reports a vehicle malfunction, verify the DTC, then diagnose the malfunction according to
following flowchart.
— If a DTC exists, diagnose according to the applicable DTC inspection (See
— If a DTC exists, diagnose according to the applicable symptom troubleshooting (See
TROUBLESHOOTING
Repair the malfunctioning part by following the
DTC inspection, referring to DTC TABLE.
Read/clear diagnostic results
• This function allows you to read or clear DTCs in the water heater unit.
DTCs Reading Procedure
1. Perform the necessary vehicle preparation and visual inspection.
2. Connect SST (WDS or equivalent) to the vehicle
DLC-2 16-pin connector located as shown in the
figure.
3. Retrieve DTCs using WDS or equivalent.
KOEO Self Test/Combustion Test
1. Connect the SST (WDS or equivalent) to the
vehicle DLC-2 16-pin connector located as shown
in the figure.
2. Select the "Supplemental Heater Test" in the
"Supplemental Heater Menu" of the "Guided
Diagnosis" function.
3. Perform the KOEO Self Test/Combustion Test.
Note
• If the water heater unit is operating, the
water heater unit will reject the test
command. Perform the DTC reading
procedure after the water heater unit stops
operating.
End Of Sie
U–22
ON-BOARD DIAGNOSTIC
ON-BOARD DIAGNOSTIC
INDEX.)
Customer arrives
Connect the SST (WDS or equivalent).
Perform the KOEO Self Test/Combustion
Test.
Are any DTCs displayed?
Yes
U–22–2 DTC
No
Confirm the malfunction symptom and troubleshoot
the water heater system for the applicable
malfunction, referring to the TROUBLESHOOTING
INDEX.
DLC-2
DLC-2
A6E857001038201
TABLE.)
U–26
B6E0740TL01
A6E3970W002
A6E3970W002