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Home >> Mazda >> 2016 >> 6 Touring, Standard Trans >> Repair and Diagnosis (Single Page) >> Brakes >> Anti-Lock Brakes >> Symptom Troubleshooting [Dynamic Stability Control] >> No. 7 Hill Launch Assist (HLA) Operates Even On A Downhill/Hill Launch Assist (HLA) Does Not Operate On A Slope >> Diagnostic procedure

Diagnostic procedure

STEP INSPECTION ACTION
1 VERIFY DTC FOR RELATED MODULES  Yes Go to the applicable DTC inspection.
(See DTC TABLE [DYNAMIC STABILITY CONTROL (DSC)] .)
(See DTC TABLE [SKYACTIV-G 2.5] .)
(See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [FW6A-EL] .)
(See DTC TABLE [INSTRUMENT CLUSTER] .)
No Go to the next step.
2 VERIFY IF FALSE DETECTION OF INCLINATION ANGLE CAUSED BY MALFUNCTIONING SAS CONTROL MODULE INSTALLATION 
  • Inspect the SAS control module installation condition for the following:
  • Is the module installed with any twisting?
  • Is the module installed correctly?
 Yes Go to the next step.
No Repair the SAS control module installation condition.
(See SAS CONTROL MODULE REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM] .)
(See SAS CONTROL MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .)
3 VERIFY IF MALFUNCTION CAUSED BY INITIALIZATION PROCEDURE FOR LOW-G SENSOR NOT PERFORMED 
  • Verify if malfunction caused by initialization procedure for low-G sensor not performed.
  • Has the initialization for the low-G sensor been performed after replacing the DSC HU/CM and the SAS control module?
 Yes Go to the next step.
No Perform the initialization procedure.
(See DSC RELATED PARTS SENSOR INITIALIZATION PROCEDURE .)
4 VERIFY IF MALFUNCTION CAUSED BY TIRE MALFUNCTION PERFORMED 
  • Inspect the tire pressure and condition.
  • Are tire pressure and condition normal?
 Yes Go to the next step.
No If the pressure is incorrect, adjust the tire pressure to the specification.
If the tires are worn, replace the tires.
5 INSPECT RELATED MODULES FOR MALFUNCTION CAUSED BY FALSE SIGNAL 
  • Access the following DSC HU/CM, PCM and instrument cluster PIDs using the M-MDS:

    (See PID/DATA MONITOR INSPECTION [DYNAMIC STABILITY CONTROL (DSC)] .)

    (See PCM INSPECTION [SKYACTIV-G 2.5] .)

    (See ON-BOARD DIAGNOSTIC SYSTEM PID/DATA MONITOR INSPECTION [FW6A-EL] .)

    (See PID/DATA MONITOR INSPECTION [INSTRUMENT CLUSTER] .)

    DSC HU/CM 

    • BRAKE_SW (Brake signal)
    • LON_ACCL_C (Low-G sensor (longitudinal G) calculated value signal)
    • LON_ACCL_R (Low-G sensor (longitudinal G) raw value signal)
    • BRK_F_P_C (Brake fluid pressure calculated value signal)
    • BRK_F_P_R (Brake fluid pressure raw value signal)
    • WSPD_LF (ABS wheel-speed sensor (LF) signal)
    • WSPD_RF (ABS wheel-speed sensor (RF) signal)
    • WSPD_LR (ABS wheel-speed sensor (LR) signal)
    • WSPD_RR (ABS wheel-speed sensor (RR) signal)

    PCM 

    • RPM (Engine speed signal)
    • APP (APP sensor signal)
    • CPP (Clutch pedal signal: MTX)
    • M_GEAR (Manual gear position signal: MTX)
    • GEAR (Gear commanded signal: ATX)

    TCM (ATX) 

    • TR (Transaxle range sensor signal)

    INSTRUMENT CLUSTER 

    • P_BRAKE_SW (Parking brake signal)
  • Are all PID values normal?
 Yes Inspect the followings:
  • Brake (foot brake/parking brake) drag
  • Engine output malfunction

Repair or replace any malfunctioning parts according to the inspection result.
No Inspect the related parts and wiring harness.
Repair or replace any malfunctioning parts according to the inspection result.
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