Mazda RX-8 2004 Service Highlights page 177

ON-BOARD DIAGNOSTIC SYSTEM FUNCTION (TIRE PRESSURE MONITORING SYSTEM)
Malfunction Detection Function
• The malfunction detection function detects malfunctions in the input/output signal system of the tire pressure
monitoring system (TPMS) control module based on abnormal signals from the wheel units when the ignition
switch is at the ON position or driving the vehicle.
• The TPMS warning light illuminates for approx. 3.0 s when the ignition switch is turned to the ON position to
inspect for open circuits in the light.
Malfunction Display Function
• When the malfunction detection function detects a malfunction, the TPMS warning light illuminates to advise
the driver. Using the external tester communication function, DTCs can be output to the DLC-2 via the CAN
communication line. At the same time, malfunction detection results are sent to the memory functions.
Memory Function
• The memory function stores DTCs for malfunctions in input/output signal systems. With this function, once a
DTC is stored it is not cleared after the ignition switch has been turned off (LOCK position), even if the
malfunctioning signal system has returned to normal.
• Since the TPMS control module has a built-in non-volatile memory, DTCs are not cleared even if the battery is
removed. Therefore, it is necessary to clear the memory after performing repairs. Refer to the Workshop
Manual for the DTC clearing procedure.
DTC TABLE
Malfunction location
TPMS control module
System configuration malfunction
Wheel unit 1 internal fault
Wheel unit 2 internal fault
Wheel unit 3 internal fault
Wheel unit 4 internal fault
CAN bus communication error
CAN system communication error
Wheel unit 1 communication
malfunction
Wheel unit 2 communication
malfunction
Wheel unit 3 communication
malfunction
Wheel unit 4 communication
malfunction
End Of Sie
02–02–2
2004 Mazda RX-8 Service Highlights (3378–1U–03C)
ON-BOARD DIAGNOSTIC
DTC
(WDS or equivalent)
B1342
B2477
B2868
B2869
B2870
B2871
U0516
U1900
U2616
U2617
U2618
U2619
TPMS warning light
illumination condition
Illuminated
Not illuminated
Illuminated
Illuminated
Illuminated
Illuminated
Illuminated
Not illuminated
Illuminated
Illuminated
Illuminated
Illuminated
Revised 11/2004 (Ref. No. R086/04)
CHU020237020S02
TPMS warning light
illumination pattern
0.2 s
ON
OFF
1 s
–
2 s
ON
OFF
2 s
0.2 s
ON
OFF
1 s
–
1 s
ON
OFF
1 s