Mazda 2002 6 Workshop Manual page 540

NO.22 NO ENGINE BRAKING IN HOLD MODE
22 No engine braking in hold mode
• Engine speed drops to idle but vehicle coasts when accelerator pedal is released during cruising at
medium to high speeds.
DESCRIPTION
• Engine speed drops to idle but vehicle coasts when accelerator pedal is released when in L range at
low vehicle speed.
1. Clutch slippage, burned (low and reverse brake)
• Line pressure low
• Shift solenoid D malfunction
• Shift solenoid E malfunction
• Shift solenoid C malfunction
• Control valve body malfunction
• Body GND malfunction
2. Signal malfunction
• TP sensor malfunction
POSSIBLE
• Vehicle speed sensor malfunction
CAUSE
• Sensor GND malfunction
• Input/turbine speed sensor malfunction
3. HOLD switch ON not judged by PCM (short, or open circuit, poor operation)
• HOLD switch signal malfunction
Note
• Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic
and Automatic Transaxle Basic Inspection are conducted.
Diagnostic procedure
STEP
• Do following symptoms concurrently occur?
1
— Engine flares up or slips during
acceleration.
— Engine flares up or slips when shifting.
End Of Sie
NO.23 TRANSAXLE OVERHEATS
23 Transaxle overheats
• Burnt smell emitted from transaxle.
DESCRIPTION
• Smoke emitted from transaxle.
• The malfunction is restricted to hindrance of coolant at the oil cooler. In addition, overheating of the
transaxle may be caused by a malfunction of the transaxle fluid temperature sensor.
1. Burned (TCC)
• Line pressure low
• Control valve body malfunction
• Accelerator cable misadjustment
2. Oil cooler malfunction (Foreign material mixed ATF)
POSSIBLE
3. Transaxle fluid temperature sensor malfunction
CAUSE
4. Excessive amount of ATF
5. Torque converter malfunction
Note
• Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic
and Automatic Transaxle Basic Inspection are conducted.
Diagnostic procedure
STEP
• Inspect for bent, damage, corrosion or kinks
1
of oil cooler pipes.
• Are oil cooler pipes okay?
• Perform the stall test.
2
(See K–7 Stall Test.)
• Is stall speed okay?
• Check the value at the following PID using
3
the WDS or equivalent.
(See F–45 PCM
— TP
• Is PID value okay?
TROUBLESHOOTING
INSPECTION
INSPECTION
INSPECTION.)
Yes Go to symptom troubleshooting NO.14 "Engine flares up or
slips when upshifting or downshifting" or No.15 "Engine
flares up or slips when accelerating vehicle".
No Repeat basic inspection and repair or replace any defective
parts according to inspection result.
(See K–112 BASIC INSPECTION.)
Yes Go to next step.
No Replace any defective parts.
Yes Go to next step.
No Repair or replace any defective parts.
Yes Go to next step.
No Repair or replace any defective parts.
A6E568001030W26
ACTION
A6E568001030W27
ACTION
K–129
K