Mazda 6 2002, Workshop Manual

Page: 531 / 1248

K–120
TROUBLESHOOTING
End Of Sie
NO.7 NO SHIFTING
A6E568001030W11
End Of Sie
NO.8 DOES NOT SHIFT TO FOURTH GEAR (4GR)
A6E568001030W12
3 Disconnect solenoid connector.
Does vehicle operate as follows?
D, S ranges: 3GR (fixed) L range: 1GR (fixed)
R position: Reverse
Yes Go to next step.
No Overhaul control valve body and repair or replace any
defective parts. If problem remains, overhaul transaxle and
repair or replace any defective parts.
(See ATX workshop manual (FN4A-EL) [1623-10-98E].)
(See ATX workshop manual supplement (FN4A-EL)
[1746-1*-02C].)
4 Drive vehicle in D, S, and L ranges except HOLD
mode. Does vehicle start from stop in first gear? Yes Go to next step.
No Check the value at the following PIDs using the WDS or
equivalent.
(See
F–45 PCM INSPECTION .)
•
TP
•
VSS
•
TSS
•
TR
Repair or replace any defective parts.
5 Check the value at the following PIDs using the
WDS or equivalent.
(See
F–45 PCM INSPECTION .)
•
SSA/SS1
•
SSB/SS2
•
SSC/SS3
Are PID values okay?
Yes Go to next step.
No Check the value at the following PIDs using the NGS tester.
(See
F–45 PCM INSPECTION .)
•
TP
•
VSS
•
TSS
Repair or replace any defective parts.
6 Perform the stall test. (See K–7 Stall Test .)
Is stall speed okay?
Yes Reverify symptoms of malfunction.
No Overhaul transaxle and repair or replace any defective
parts. (See ATX workshop manual (FN4A-EL)
[1623-10-98E].) (See ATX workshop manual supplement
(FN4A-EL) [1746-1*-02C].)
STEP INSPECTION ACTION
7 No shifting
DESCRIPTION
•
Single shift range only.
•
Sometimes it shifts correctly.
POSSIBLE
CAUSE
•
When the gear position is fixed in 3GR due to the fail-safe operation, the malfunction is in the ATX.
•
Perform malfunction diagnosis according to No.6 "Low maximum speed and poor acceleration".
1. Clutch slippage, burned
•
Line pressure low
•
Shift solenoid D malfunction
•
Shift solenoid E malfunction
•
Shift solenoid A malfunction
•
Shift solenoid B malfunction
•
Shift solenoid C malfunction
•
Pressure control solenoid malfunction
•
Body GND malfunction
•
Control valve body malfunction
2. Signal malfunction
•
Vehicle speed sensor malfunction
•
Sensor GND malfunction
•
TP sensor malfunction
•
Input/turbine speed sensor malfunction
3. Transaxle fixed in 3GR (Operation in fail-safe function)
•
Short or open circuit in wiring
•
Poor connection of connector
•
Disconnected shift solenoid connector
•
Poor ground of shift solenoid
4. Transaxle fixed in HOLD mode
•
HOLD switch malfunction
8 Does not shift to fourth gear (4GR)
DESCRIPTION
•
Vehicle does not upshift from 3GR to 4GR even though vehicle speed increased.
•
Vehicle does not shift to 4GR even though accelerator pedal is released in D range at 60 km/h {37
mph} .