Mazda CX-9 2007 Service Highlights page 232

ON-BOARD DIAGNOSTIC [AW6A-EL, AW6AX-EL]
DTC On-board diagnostic
No. function
U0073 CAN BUS OFF
TCM cannot receive any
U0100
signals from PCM
TCM cannot receive any
U0121 signals from DSC/RSC
HU/CM
TCM cannot receive any
U0140
signals from BCM
Invalid data received from
U0415 DSC/RSC HU/CM (wheel
speed)
05-02–10
Detection condition
• Bus off error is detected.
• Communication error is detected
between TCM and PCM.
• Communication error is detected
between TCM and DSC/RSC HU/CM.
• Communication error detected
between TCM and BCM.
• Irregular input signals input from each
wheel speed sensor.
Fail-safe
• Reactive shift look function
• Emergency mode 1
• Fixes following signals as
indicated:
— Engine speed: 7,000
rpm
— Accelerator opening
angle: 0%
— Engine torque: MAX
— Idle: on
— Kick down: off
— Brake switch: on
— Engine coolant
temperature: 80 °C {176
°F}
— VSS used for all wheel
speeds
• Inhibits self learning
control
• Inhibits adaptive shift
control
• Reactive shift look function
• Emergency mode 1
• Fixes following signals as
indicated:
— Engine speed: 7,000
rpm
— Accelerator opening
angle: 0%
— Engine torque: MAX
— Idle: on
— Kick down: off
— Brake switch: on
— Engine coolant
temperature: 80 °C {176
°F}
• Inhibits self learning
control
• Inhibits driver adaptive
shift control
• VSS used for all wheel
speeds
• TCM considers that it is
not equipped with DSC/
RSC
• Inhibits cornering function
• Inhibits self learning
control
• VSS used for all wheel
speeds
TCC
Enabled
Enabled
Enabled
Enabled
Enabled