Mazda RX-8 2004 Service Highlights page 346

DTC TABLE
System malfunction location
Battery power supply
EPS control module
EPS system (neutral position
setting not performed)
Torque sensor
EPS motor
CAN bus communication error
CAN communication error
CAN communication error
*1
: Illuminates after switching to fail mode.
*2
: Switches to fail mode (controlled by assist torque to allow safe driving).
*3
: If a malfunction is detected in the engine speed signal before the engine is started, assist control is not started
up.
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ON-BOARD DIAGNOSTIC SYSTEM PID/DATA MONITOR FUNCTION (ELECTRIC POWER STEERING)
• The PID/data monitor function is used for optionally selecting input/output signal monitor items pre-set in the
EPS control module and reading them out in real-time.
PID/DATA MONITOR TABLE
Command name
(WDS or equivalent)
B+
CCNT
EPS_MTR
EPSLAMP
RPM
TRQ_S_CORR
TRQ_SENS
VSS
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ON-BOARD DIAGNOSTIC SYSTEM ACTIVE COMMAND MODE FUNCTION (ELECTRIC POWER STEERING)
• The EPS system can be set to the neutral position using the active command mode function.
Active command mode
Command name
(WDS or equivalent)
TRQ_S_CAL
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ON-BOARD DIAGNOSTIC
DTC
EPS warning light illumination
B1318
B1342
B2141
B2278
C1099
U0073
U1900
U2023
Input/output part name
Battery positive voltage
DTC (amount detected)
EPS motor
EPS warning light
Engine speed signal
Torque sensor neutral position
Torque sensor
Vehicle speed signal
Output part name
EPS system (neutral position setting)
Fail-safe function
status
Illuminated
Illuminated
Illuminated
Illuminated
Illuminated
*1
Illuminated
*1
Illuminated
If there is an irregularity only in the
*1
Illuminated
Operation
ON/OFF
Control status
Control suspended
Control suspended
Control available
Control suspended
Control suspended
*2
Control available
*2
Control available
vehicle speed data:
*2
Control available
If there is any other irregularity:
*3
Control available
CHU060201038S03
Unit/operation
(WDS or equivalent)
V
—
A
ON/OFF
RPM
NM
NM
KPH/MPH
CHU060201038S04
Operation condition
Ignition switch at ON
06–02–3
06–02