Mazda 6 2002, Руководство по ремонту

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K–72
ON-BOARD DIAGNOSTIC
Diagnostic procedure
POSSIBLE
CAUSE
•
ATF level low
•
Deteriorated ATF
•
Shift solenoids A, B or C stuck
•
Pressure control solenoid stuck
•
Line pressure low
•
2-4 brake band slipping
•
Forward clutch slipping
•
Control valve stuck
•
Oil pump
•
PCM malfunction
STEP INSPECTION ACTION
1 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.
No Go to next step.
2 CHECK ATF CONDITION
•
Check ATF condition.
(See
K–12 AUTOMATIC TRANSAXLE FLUID
(ATF) INSPECTION .)
•
Is it okay?
Yes Go to next step.
No Replace ATF, then go to Step 8.
3 CHECK ATF LEVEL
•
Start engine.
•
Warm up ATX.
•
Is ATF level within specification?
(See
K–12 AUTOMATIC TRANSAXLE FLUID
(ATF) INSPECTION .)
Yes Go to next step.
No Adjust ATF level, then go to Step 8.
4 INSPECTION SHIFT SOLENOID VALVE A, B
AND C FOR CLICK SOUND
•
Perform inspection of operation. (See K–26
SOLENOID VALVE INSPECTION .)
•
Verify the click sound of shift solenoid A, B, and
C when applying B+ to each transaxle
connector terminal.
•
Was click heard from solenoids?
Yes Go to next step.
No Replace solenoid that you could not hear click sound, then
go to Step 8.
(See
K–28 SOLENOID VALVE REMOVAL/
INSTALLATION .)
5 INSPECT LINE PRESSURE
•
Start engine.
•
Measure line pressures.
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, then go to Step 8.
Any ranges: Replace control valve body, then go to Step 8.
(See
K–34 CONTROL VALVE BODY REMOVAL , K–35
CONTROL VALVE BODY INSTALLATION .)
6 INSPECT STALL SPEED
•
Measure stall speed in D range.
(See
K–7 Stall Test .)
Specification
2,000—2,600 rpm
•
Is stall speed within specification?
Yes Go to next step.
No Replace automatic transaxle, then go to Step8.
(See
K–29 AUTOMATIC TRANSAXLE REMOVAL/
INSTALLATION .)
7 INSPECT FREQUENCY OF INPUT/TURBINE
SPEED SENSOR WHEN DRIVING VEHICLE
•
Turn ignition key to OFF.
•
Connect WDS or equivalent.
•
Start engine.
•
Measure frequency of input/turbine speed
sensor while driving vehicle under the following
conditions:
— Vehicle speed:
40 km/h {24 mph} (VSS
PID)
— Drive in D range, 2nd gear
— Throttle opening angle:
about 25% (TP PID)
•
Was frequency of input/turbine speed sensor at
approx. 1,156 Hz ?
Yes Go to next step.
No Replace control valve body, then go to next step.
(See
K–34 CONTROL VALVE BODY REMOVAL , K–35
CONTROL VALVE BODY INSTALLATION .)
DTC P0732 Gear 2 incorrect (Incorrect Gear Ratio Detected)