Mazda 6 2002, Workshop Manual

Page: 717 / 1248

TROUBLESHOOTING (ABS/TCS/DYNAMIC STABILITY CONTROL)
P–121
P
NO.5 DSC
*2
OPERATES FREQUENTLY/DSC DOES NOT WORK CORRECTLY
*2
: DSC INDICATOR LIGHT
GOES ON AND OFF WHILE DSC OPERATES
A6E699067650W20
Diagnostic procedure
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NO.6 DSC INDICATOR LIGHT FLASHES (WHEN NEITHER THE TCS NOR THE DSC ARE OPERATING)
A6E699067650W021
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5
DSC (*2) operates frequently. /DSC does not work correctly.
(*2): DSC indicator light goes on and off while DSC operates.
[TROUBLESHOOTING HINTS]
•
DSC HU/CM detected malfunction (input and output device malfunction)
•
Poor installation with combine sensor and/or steering angle sensor
(If any of the above sensors are poorly installed, DSC may operate intermittently.)
•
When replacing DSC HU/CM, combine sensor or steering angle sensor, initialization is not performed.
(If initialization is not performed correctly, DSC may not work correctly.)
STEP INSPECTION ACTION
1 CHECK DSC HU/CM FOR DTCs
•
Check the DTC for the DSC ON-BOARD
DIAGNOSTIC SYSTEM.
•
Have DTCs been recorded in memory?
Yes Perform inspection using appropriate DTC.
No Go to next step.
2 VERIFY THAT EACH SENSOR IS INSTALLED
•
Are yaw rate sensor, lateral-G sensor and
steering angle sensor securely installed?
Yes Go to next step.
No Install malfunctioning sensor securely.
*3 VERIFY THAT EACH SENSOR IS INITIALIZED
•
Did each sensor initialize after replacement
of DTC unit, yaw rate sensor, lateral-G
sensor or steering angle sensor?
Yes Find malfunctioning part according to “INTERMITTENT
CONCERN TROUBLESHOOTING.”
No Perform initialization.
6 DSC indicator light flashes (when neither the TCS nor the DSC are operating)
[TROUBLESHOOTING HINTS]
•
Non-completion of module configuration.
(If the module configuration is not carried out after replacing the DSC HU/CM, a DSC indicator light will flash. In
this case, the DSC is not detected.)