DIAGNOSTIC PROCEDURE
DTC B2868, B2869, B2870, B2871 DIAGNOSTIC PROCEDURE
DTC U0127
DTC U0127 DETECTION CONDITION AND POSSIBLE CAUSE
DTC B2869
Wheel unit No.2 (internal malfunction)
DTC B2870
Wheel unit No.3 (internal malfunction)
DTC B2871
Wheel unit No.4 (internal malfunction)
DETECTION CONDITION
z
The instrument cluster receives error signals from the wheel unit.
POSSIBLE CAUSE
z
Internal malfunction of wheel unit
STEP
INSPECTION
ACTION
1
IDENTIFY MALFUNCTIONING WHEEL
UNIT
z
(See
MALFUNCTIONING WHEEL
UNIT IDENTIFICATION
.)
z
Identify the malfunctioning wheel unit.
z
Replace and register the wheel unit. (See
WHEEL UNIT ID
REGISTRATION
.)
z
Go to the next step.
2
VERIFY TROUBLESHOOTING
COMPLETED
z
Clear the DTC from the memory. (See
TIRE PRESSURE MONITORING
SYSTEM (TPMS
) ONBOARD
DIAGNOSIS.)
z
Drive the vehicle at a speed of
25 km/h
{15.5 mph} or more
for
10 min or
more.
z
Is the same DTC present?
Yes Go to Step 1.
No
Go to the next step.
3
VERIFY AFTER REPAIR PROCEDURE
z
Are there any other DTCs present?
Yes
Go to the applicable DTC inspection. (See
TIRE PRESSURE MONITORING
SYSTEM (TPMS
) ON-BOARD
DIAGNOSIS.)
No
DTC troubleshooting completed.
DTC U0127
z
Communication failure between instrument cluster and keyless
receiver
DETECTION
CONDITION
z
The instrument cluster cannot receive signal from the keyless CM or
keyless receiver.
With advanced keyless system
z
Open or short circuit in the wiring harness between the keyless CM
2008 Mazda CX-9 Grand Touring
2008 SUSPENSION On-Board Diagnostic (Suspension) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:25:36 AM
Page 12
© 2005 Mitchell Repair Information Company, LLC.
