Mazda 6 2002 - Dtc P0752

ON-BOARD DIAGNOSTIC
K83
K
End Of Sie
DTC P0752
A6E567001030W21
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: 1,1601,320 kPa {11.913.4 kgf/cm
2
,
170190 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 P0751
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.
STEP INSPECTION ACTION
DTC P0752 Shift solenoid A stuck ON
DETECTION
CONDITION
• When P0734 is not generated, and all conditions below satisfied in 1GR and 2GR.
 ATF temperature 20 °
°°
°C {68 °
°°
°F} or above.
 Engine run.
 Either of P0705 or P0706 output, or D range is selected.
 Brake pedal depressed.
 Throttle opening angle closed throttle position.
 Vehicle speed 0 km/h {0 mph}.
 Input/turbine speed sensor signal 187.5 rpm or above.
 Any of the following not generated: DTC P0500, P0706, P0707, P0708, P0712, P0713, P0715, P0751,
P0752, P0753, P0756, P0757, P0758, P0761, P0762, P0763, P0766, P0767, P0767, P0768, P0771,
P0772, P0773.
Diagnostic support note:
• This is a continuous monitor (CCM).
• MIL illuminates if PCM detects the above malfunction condition in two consecutive drive cycles or in one
drive cycle while the DTC for the same malfunction has been stored in the PCM.
• PENDING CODE is available if PCM detects the above malfunction condition during first drive cycle.
• FREEZE FRAME DATA is available.
• HOLD indicator light flashes.
• DTC is stored in the PCM memory.
POSSIBLE
CAUSE
• ATF level low
• Deteriorated ATF
• Shift solenoid A stuck
• Control valve stuck
• PCM malfunction