Mazda 6 2002, Workshop Manual

Page: 500 / 1248

ON-BOARD DIAGNOSTIC
K–89
K
DTC P0757
A6E567001030W24
Diagnostic procedure
DTC P0757 Shift solenoid B stuck ON
DETECTION
CONDITION
•
When either of DTC P0731 and P0733 are not generated, and both the following conditions are satisfied.
— When all conditions below satisfied while driving in 2GR.
•
ATF temperature 20
°
C {68
°
F} or above .
•
Driving in D range.
•
Engine run.
•
Turbine speed within 225—4,988 rpm .
•
Differential gear case (output) revolution speed 35 rpm or above .
•
Revolution ratio of forward clutch drum revolution to differential gear case revolution below 1.249 or
more than 2.157 .
•
Any of the following not generated: DTC P0500, P0705, P0706, P0710, P0715,P0751, P0752,
P0753, P0756, P0757, P0758, P0761, P0762, P0763, P0766, P0767, P0768, P0771, P0772, P0773.
— When all conditions below satisfied with driving in 4GR.
•
ATF temperature 20
°
C {68
°
F} or above .
•
Driving in D range.
•
Engine run.
•
Turbine speed within 225—4,988 rpm .
•
Differential gear case (output) revolution speed 35 rpm or above .
•
Vehicle speed 50 km/h {31 mph} .
•
Throttle opening angle closed throttle position.
•
Revolution ratio of forward clutch drum revolution to differential gear case revolution below 0.6 or
1.249 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 B stuck
•
Control valve stuck
•
PCM malfunction
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 .)