Mazda RX-8 2004 Service Highlights page 268

DTC No.
U0073 CAN bus off
U0100 TCM cannot receive any signals from PCM
MIL: Malfunction Indicator Lamp
DC: Drive Cycle
CCM: Comprehensive Component Monitor
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MEMORY FUNCTION
• The memory function stores malfunction information detected in the malfunction detection function. Once
malfunction information is stored, the memory will not be cleared even when the ignition switch is turned off
(LOCK position) or the malfunction is repaired.
• The stored memory (malfunction information) can be cleared using the WDS or equivalent, or by disconnecting
the negative battery cable.
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MALFUNCTION INDICATION FUNCTION
• The malfunction indication function illuminates the MIL or AT warning light when the malfunction detection
function determines there is a malfunction.
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FAIL-SAFE FUNCTION
• In the fail-safe function, minimum vehicle drivability is obtained by changing the signals that are determined to
be malfunctions by the malfunction detection function to the preset values, and limiting TCM control.
DTC On-board diagnostic
No. function
Transmission range (TR)
P0705 switch circuit malfunction
(short to power supply)
Transmission range (TR)
switch circuit malfunction
P0706
(open circuit/short to
ground)
M range switch, up switch
or down switch circuit
P0707
malfunction (open circuit/
short to ground)
Steering shift switch circuit
P0708 malfunction (open circuit/
short to ground)
Transmission fluid
P0711 temperature (TFT) sensor
malfunction (stuck)
Transmission fluid
temperature (TFT) sensor
P0712
circuit malfunction (short to
ground)
ON-BOARD DIAGNOSTIC
Condition
Detection condition
• Two or more range signals are input
from the TR switch for 12 s or more.
• No range signal is input from the TR
switch for 100 s or more.
M range switch circuit malfunction
• M range switch off with up or down
switch on.
• M range switch remains on for 10 s or
more except in D range.
Up switch or down switch circuit
malfunction
• When all of the following conditions
are met:
— M range switch off.
— Except D range.
— Up or down switch remains on for
10 s or more.
• Signal from shift control switch is 0.5
V or less, or 4.7 V or more for 10 s
or more.
• ATF temperature remains 20 °C {68
°F} or less for 6.5 min or more.
• Signal from TFT sensor is 0.1 V or
less for 150 s or more.
AT warning
MIL light DC
illuminated
OFF NO 1
ON YES 1
Fail-safe
• Driving restricted to 3GR
• Stops operation of TCC
solenoid valve (OFF).
• Driving restricted to 3GR
• Stops operation of TCC
solenoid valve (OFF).
M range switch circuit
malfunction
• Inhibits manual mode
Up switch or down switch
circuit malfunction
• Inhibits manual shifting
using the up switch or
down switch
• Inhibits manual shifting
using the steering shift
switch
N/A
• Engine coolant
temperature signal is used
for shifting.
• Feedback control disabled
• Torque reduction control
disabled
• If the ECT has a
malfunction, ATF
temperature is controlled
at 80 °C {176 °F}
Monitor Memory
item function
×
CCM
×
CCM
CHU050201026S04
CHU050201026S05
CHU050201026S06
TCC
05–02
Disabled
Disabled
Enabled
Enabled
Enabled
Enabled
05–02–3