Mazda CX-7 2007 Workshop Manual page 615

MALFUNCTIONING WHEEL UNIT IDENTIFICATION
Note
• The tire pressure monitoring system (TPMS) does not identify the location of the malfunctioning wheel
unit on the vehicle (RF, LF, LR, RR). The TPMS identifies each wheel unit as No.1, No.2, No.3 and No.4. In
order to identify the location of the wheel unit, perform the following procedure.
1. Adjust the air pressure as follows:
— RF: 220 kPa {2.2 kgf/cm
— LF: 240 kPa {2.4 kgf/cm
— LR: 260 kPa {2.6 kgf/cm
— RR: 280 kPa {2.8 kgf/cm
2. Turn the ignition switch off.
3. Connect the M-MDS to the DLC-2.
4. Turn the ignition switch to the ON position.
5. Drive the vehicle at a speed of 25 km/h {15.5 mph} or more for 2 min or more.
6. Select the following PIDs using the M-MDS, and monitor them.
— WU1_P
— WU2_P
— WU3_P
— WU4_P
7. Determine which wheel unit identification code
matches which wheel and tire by comparing the
PID monitor values with the air pressure values
set in Step 1.
8. Select the ID_LAST PID using the M-MDS, and
take a note of four displayed identification codes.
9. Inspect the DTCs using the M-MDS.
End Of Sie
ON-BOARD DIAGNOSTIC
2
, 32 psi}
2
, 35 psi}
2
, 38 psi}
2
, 40 psi}
AIR PRESSURE
VALUE SET IN STEP.1
RF 220 KPA
LF 240 KPA
LR 260 KPA
RR 280 KPA
FR: WU2_P
FL: WU1_P
RL: WU4_P
RR: WU3_P
id020200800300
02-02
PID MONITOR VALUE
WU1_P 240 KPA
WU2_P 220 KPA
WU3_P 280 KPA
WU4_P 260 KPA
acxuuw00001191
02-02–7