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Home >> Mazda >> 2011 >> 6 s Touring Plus >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 19 (Symptom Troubleshooting [Automatic Transaxle - FS5A-El]) >> No. 14 Engine Flares Up Or Slips When Upshifting Or Downshifting >> Diagnostic procedure

Diagnostic procedure

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NO. 14 ENGINE FLARES UP OR SLIPS WHEN UPSHIFTING OR DOWNSHIFTING (FS5A-EL) DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 INSPECT SHIFTING FOR MALFUNCTION 
  • Is shift point normal?
Yes Go to the next step.
No Go to NO. 9 ABNORMAL SHIFTING .
2 INSPECT THROTTLE OPENING SIGNAL FOR MALFUNCTION 
Yes Go to the next step.
No Inspect the PCM PID APR (See ON-BOARD DIAGNOSTIC TEST .) Repair or replace as necessary.
3 INSPECT TCM FOR POOR GND 
  • Disconnect the TCM connector,
  • Is the resistance between the ground terminal at the TCM connector and the body ground less than 5.0 ohms?
Yes Go to the next step.
No Repair the open ground circuit. Reconnect the TCM connector.
4 VERIFY IF MALFUNCTION CAUSE IS LINE PRESSURE CONTROL SIGNAL OR TRANSAXLE (INCLUDING CONTROL VALVE BODY) 
Yes Overhaul the control valve body and repair or replace any malfunctioning parts.
(See AUTOMATIC TRANSAXLE - [FS5A-EL] -- MAZDA6 )
If any problem remains, overhaul the transaxle and repair or replace any malfunctioning parts.
(See AUTOMATIC TRANSAXLE - [FS5A-EL] -- MAZDA6 )
No Repair or replace any malfunctioning parts.
5
  • Verify the test results.
    • If normal, return to the diagnostic index to service any additional symptoms.
    • If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis.
      • If the vehicle is repaired, troubleshooting is completed.
      • If the vehicle is not repaired or additional diagnostic information is not available, replace the TCM.