Mazda Mazda6 - Page 606

TROUBLESHOOTING
K2–191
K2
End Of Sie
NO.7 NO SHIFTING
A6E578001030210
End Of Sie
3 • Stop engine.
• Inspect shift solenoid A, B, or C.
• Are they okay?
Yes Go to next step.
No • Inspect for shift solenoid mechanical stuck.
(See K2–88 SOLENOID VALVE INSPECTION.)
— If shift solenoids okay, inspect for open or short circuit
between TCM connector terminals 2W, 2T, 2X and
pressure control solenoid connector terminals I, G, or
F.
4 • Remove torque converter.
• Inspect torque converter.
(See ATX Workshop Manual.)
• Is torque converter okay?
Yes • Overhaul control valve body and repair or replace any
defective parts.
(See ATX Workshop Manual.)
— If problem remains, replace or overhaul transaxle and
repair or replace any defective parts.
(See K2–99 AUTOMATIC TRANSAXLE AND
TRANSFER REMOVAL/INSTALLATION.)
(See ATX Workshop Manual.)
No Replace torque converter.
5 • Verify test results.
— If okay, return to diagnostic index to service any additional symptoms.
— If malfunction remains, inspect related Service Informations and perform repair or diagnosis.
— If vehicle repaired, troubleshooting completed.
— If vehicle not repaired or additional diagnostic information not available, replace TCM.
STEP INSPECTION ACTION
7 No shifting
DESCRIPTION
• Single shift range only.
• Sometimes it shifts correctly.
POSSIBLE
CAUSE
• When gear position is fixed in 4GR due to the fail-safe operation, malfunction is in the ATX.
• Perform malfunction diagnosis according to No.6 “Low maximum speed and poor acceleration”.
— Clutch burned
• Line pressure low
• Incorrect throttle position signal
• Malfunction of VSS
• Malfunction of input/turbine speed sensor
• Malfunction of sensor ground
• Malfunction of shift solenoid A, B or C
• Malfunction of control valve body
— 4GR is fixed (Operation in fail-safe function)
• Short or open circuit in wiring
• Poor connection of connector
• Poor ground of shift solenoid
• Electrical parts of output and input system malfunctioning
Note
• Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic
and Automatic Transaxle Basic Inspection are conducted.