Mazda 6 2002 - Page 458

K84
ON-BOARD DIAGNOSTIC
Diagnostic procedure
End Of Sie
STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
• Has FREEZE FRAME PID DATA been
recorded?
Yes Go to next step.
No Record FREEZE FRAME PID DATA on repair order, then
go to next step.
2 VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
• Check for related Service Bulletins availability.
• Is any related repair information available?
Yes Perform repair or diagnosis according to available repair
information.
• If vehicle is not repaired, go to next step.
No Go to next step.
3 CHECK ATF CONDITION
• Turn ignition key to OFF.
• Check ATF condition.
 Clear red: Normal
 Milky: Water mixed in fluid
 Reddish brown: Deteriorated ATF
• Is it okay?
(See K12 Automatic Transaxle Fluid (ATF)
Condition Inspection.)
Yes Go to next step.
No If ATF color milky or reddish brown, replace ATF, then go to
Step 5.
(See K13 AUTOMATIC TRANSAXLE FLUID (ATF)
REPLACEMENT.)
4 CHECK ATF LEVEL
• Start engine.
• Warm up ATX.
• Is ATF level within specification?
(See K12 Automatic Transaxle Fluid (ATF) Level
Inspection.)
Yes Go to next step.
No Adjust ATF level, then go to Step 7.
(See K12 Automatic Transaxle Fluid (ATF) Level
Inspection.)
5 INSPECT LINE PRESSURE
• Start engine.
• Measure line pressure.
Specification
Idle: 330470 kPa {3.44.7 kgf/cm
2
, 4966
psi}
Stall: 1,2001,360 kPa {12.313.8 kgf/cm
2
,
175196 psi}
• Is line pressure within specification?
(See K6 Line Pressure Test.)
Yes Go to next step.
No • All ranges: Replace oil pump or control valve body, then
go to Step 7.
• Any ranges: Replace ATX, then go to Step 7.
(See K29 AUTOMATIC TRANSAXLE REMOVAL/
INSTALLATION.)
(See ATX Workshop Manual FN4A-EL (9999-95-FN4A-
99).)
6 CHECK OPERATION OF EACH VALVE AND
EACH SPRING
• Turn ignition key to OFF.
• Remove control valve body.
• Disassemble control valve body.
• Is each valve operation okay and is return
spring okay?
(See K34 CONTROL VALVE BODY REMOVAL,
K35 CONTROL VALVE BODY INSTALLATION.)
(See ATX Workshop Manual FN4A-EL (9999-95-
FN4A-99).)
Yes Replace ATX, then go to next step.
(See K29 AUTOMATIC TRANSAXLE REMOVAL/
INSTALLATION.)
(See ATX Workshop Manual FN4A-EL (9999-95-FN4A-
99).)
No Repair or replace shift valve and return spring, then go to
next step.
(See K34 CONTROL VALVE BODY REMOVAL, K35
CONTROL VALVE BODY INSTALLATION.)
(See ATX Workshop Manual FN4A-EL (9999-95-FN4A-
99).)
7 VERIFY TROUBLESHOOTING OF DTC P0752
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear DTC from memory using WDS or
equivalent.
• Start engine.
• Warm up ATX.
• Drive the vehicle under the following conditions
and make sure that gears shift smoothly from
1GR to 4GR.
 ATF temperature: 20 °
°°
°C {68 °
°°
°F} or above
 Drive in D range
• Is pending code present?
Yes Replace PCM, then go to next step.
(See F43 PCM REMOVAL/INSTALLATION.)
No Go to next step.
8 VERIFY AFTER REPAIR PROCEDURE
• Perform After Repair Procedure.
(See K52 AFTER REPAIR PROCEDURE.)
• Are any DTCs present?
Yes Go to applicable DTC inspection.
No Troubleshooting completed.