No.10 Tcs Does Not Work Correctly; No.11 There Is Malfunction In; Warning Light, Tcs Off Light; No.1 Any Of The Following - Mazda 2002 6 Workshop Manual

TROUBLESHOOTING (ABS/TCS/DYNAMIC STABILITY CONTROL)

NO.10 TCS DOES NOT WORK CORRECTLY

10 TCS does not work correctly.
[TROUBLESHOOTING HINTS]
• There is difference in size or air pressure between the front and rear tires.
• There is malfunction in the engine control system.
• ABS/TCS HU/CM detects TCS system malfunction.
Diagnostic procedure
STEP
1 CHECK TIRE SIZE AND AIR PRESSURE
Inspect tire size and air pressure.
Are size and air pressure as specified?
2 CHECK FOR DTCS IN ABS/TCS HU/CM
Have DTCs been recorded in memory?
3 CHECK FOR DTCS IN PCM
Check the DTC for the PCM ON-BOARD
DIAGNOSTIC SYSTEM.
Have DTCs been recorded in memory?
4 CHECK TO MAKE SURE TORQUE
REDUCTION SIGNAL GOING FROM ABS/TCS
HU/CM TO PCM IS BEING RECEIVED
CORRECTLY
Select ENG TRQ (engine torque reduction
-
signal) using WDS or equivalent.
Increase the engine speed to 3,000 rpm.
Input 280 N·m ENG
or equivalent.
Does engine speed decrease?
End Of Sie NO.11 THERE IS MALFUNCTION IN THE SYSTEM EVEN THOUGH ABS WARNING LIGHT, BRAKE SYSTEM
WARNING LIGHT, TCS OFF LIGHT, TCS INDICATOR LIGHT DO NOT ILLUMINTE
There is a malfunction in system even though ABS warning light, BRAKE system warning light, TCS
11
OFF light, TCS indicator light do not illuminate.
[TROUBLESHOOTING HINTS]
• There is a difference in size or air pressure between the front and rear tires
Diagnostic procedure
STEP
1 CHECK FOR DTCs IN ABS/TCS HU/CM
Have DTCs been recorded in memory?
2 INSPECT ABS HYDRAULIC UNIT
Perform "ABS hydraulic unit system inspection".
Is system okay?
End Of Sie
NO.1 ANY OF THE FOLLOWING LIGHTS DO NOT ILLUMINATE WITH IGNITION SWITCH ON: (ABS
WARNING LIGHT, BRAKE SYSTEM WARNING LIGHT, DSC INDICATOR LIGHT AND/OR DSC OFF LIGHT)
Any of the following lights do not illuminate with ignition switch on: (ABS warning light, BRAKE
1
system warning light, DSC indicator light and/or
[TROUBLESHOOTING HINTS]
• Check each light in the instrument cluster for malfunction.
• Poor connection at DSC HU/CM connector
• ABS warning light circuit or BRAKE system warning light circuit shorted out
(when harness is shorted out between DSC HU/CM and ABS warning light or BRAKE system warning light, each
warning lights go off.)
• DSC indicator light circuit and/or
(when DSC indicator light circuit and/or
INSPECTION
TRQ to PCM using WDS
_
INSPECTION
DSC
OFF light circuit may be open.
DSC
OFF light circuit is open, each circuit's warning lights go off.)
Yes Go to next step.
No Replace with specified tires or adjust tire air pressure.
Yes Perform inspection using appropriate DTC.
No Go to next step.
Yes Perform inspection using appropriate DTC.
No Go to next step.
Yes System is normal.
Recheck customer's complaint.
No Replace ABS/TCS HU/CM.
Yes Perform inspection using appropriate DTC.
No Go to next step.
Yes Inspect conventional brake system.
No If wheels do not rotate:
Replace ABS/TCS HU/CM.
If wheels rotate but order in which wheels rotate is
incorrect:
Inspect brake pipe passage to ABS/TCS HU/CM.
DSC

OFF light).

A6E699067650W14
ACTION
A6E699067650W15
ACTION
A6E699067650W16
P–117
P