Mazda 6 2002, Workshop Manual

Page: 530 / 1248

TROUBLESHOOTING
K–119
K
End Of Sie
NO.6 LOW MAXIMUM SPEED AND POOR ACCELERATION
A6E568001030W10
Diagnostic procedure
2 Check the value at the following PID using the
WDS or equivalent.
(See
F–45 PCM INSPECTION .)
•
TP
Is PID value okay?
Yes Go to next step.
No Repair or replace any defective parts.
3 Disconnect PCM.
Is resistance between ground terminal at PCM
connector and body ground
less than 5.0
ohms ?
Yes Go to next step.
No Repair open ground circuit.
4 Check LPS PID value.
Is LPS PID value okay?
(See
F–45 PCM INSPECTION .)
Yes 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].)
No Repair or replace any defective parts.
STEP INSPECTION ACTION
6 Low maximum speed and poor acceleration
DESCRIPTION
•
Vehicle acceleration is poor at start.
•
Delayed acceleration when accelerator pedal is depressed while driving.
POSSIBLE
CAUSE
•
If the clutch is stuck or does not stay in 3GR, the malfunction is in engine circuit.
1. Clutch slipped, 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 of fail-safe function)
•
Short or open circuit in wiring
•
Poor connection of connector
•
The electronic parts of output and input system have malfunction
4. Insufficient starting torque (Suspected when in-gear condition, shift control and engine circuit are
normal)
•
The torque converter have malfunction (Poor operation, stuck)
5. Engagement of TCC operation range (Operation of fail-safe function)
•
Transaxle fluid temperature sensor malfunction (Short or open circuit)
6. Transaxle fixed in HOLD mode
•
HOLD switch malfunction
7. TR switch adjustment incorrect
Note
•
Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic
and Automatic Transaxle Basic Inspection are conducted.
STEP INSPECTION ACTION
1 With ignition switch at ON, does HOLD indicator
light indication correspond to HOLD switch
operation? Yes Go to next step.
No Go to No.26 "HOLD INDICATOR LIGHT DOES NOT
ILLUMINATE WHEN HOLD SWITCH IS TURNED ON.".
No.27 "HOLD INDICATOR LIGHT ILLUMINATES WHEN
HOLD SWITCH IS NOT TURNED ON."
2 Go to No.12 "Lack/loss of power".
(See
F–207 NO.12 LACK/LOSS OF
POWER-ACCELERATION/CRUISE .) Does CIS
system okay?
Yes Go to next step.
No Repair or replace any defective parts.