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On-Board Diagnostic - Automatic Transaxle [FW6A-EL]: Other Mazda 3 BM

Automatic Trans 7 illustrations ~989 words

Action for Non-repeatable Malfunction

  1. If the malfunction does not recur, verify the malfunction cause by performing the following actions: Verify that no DTCs are stored. (See «ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [FW6A-EL]»(ref-579376-S25255133932013100700000) .) Based on the repair order form, attempt to drive the vehicle or perform tests to replicate the malfunction, record the data at that time, and detect the malfunction cause.
  2. If the malfunction does not recur after the above servicing, explain to the customer that the vehicle is normal.

Scheme 1724

Scheme 1724: Reading DTCs Procedure
  1. Connect the M-MDS (IDS) to the DLC-2. (Scheme 1724): Identifying Data Link Connector (DLC-2)
  2. After the vehicle is identified, select the following items from the initialization screen of the IDS. Select "Self Test". Select "Modules". Select "TCM". NOTE: Freeze frame data/snapshot data appears at the top of the help screen when the displayed DTC is selected. Freeze frame data The freeze frame data consists of data for vehicle and transaxle control system operation conditions when malfunctions in the transaxle control system are detected and stored in the TCM. Freeze frame data is stored at the instant the malfunction indicator lamp illuminates, and only a part of the DTC data is stored. Snapshot data The data for all DTCs currently detected is stored. Recorded DTC timing For DTCs with one drive cycle, data is recorded during the malfunction determination period. For DTCs with two drive cycles, data is recorded during non-determination (1st diagnosis) periods.
  3. Then, select the "Retrieve CMDTCs" and perform procedures according to directions on the IDS screen.
  4. Verify the DTC according to the directions on the screen. If any DTCs are displayed, perform troubleshooting according to the corresponding DTC inspection.
  5. After completion of repairs, clear all DTCs stored in the TCM. (See «FREEZE FRAME DATA ITEM TABLE»(ref-579376-S11575965682013100700000).)

Freeze frame data item table

Note. Refer to PID/DATA monitor table for confirm the transaxle control system operation status while the TCM does not store the DTC. (See ON-BOARD DIAGNOSTIC SYSTEM PID/DATA MONITOR INSPECTION [FW6A-EL] .) Freeze frame data items are not displayed, according to detected DTC.

Not applicable

Freeze frame data itemUnitDescriptionCorresponding PID/DATA monitor item
LOAD%Calculated engine loadLOAD
ECT°C {°F}Engine coolant temperatureECT
RPMRPMEngine speedRPM
VSKPH {MPH}Vehicle speedVSS
SPARKADV°Ignition timingSPARKADV
IAT°C {°F}Intake air temperatureIAT
TP%Throttle valve position No.1TP
RUNTMHh:mm:ssTime from engine start
VPWRVModule supply voltageVPWR
APP_D%Accelerator pedal position No.1APP1

Snapshot data item table

Note. Refer to PID/DATA monitor table for confirm the transaxle control system operation status while the TCM does not store the DTC. (See ON-BOARD DIAGNOSTIC SYSTEM PID/DATA MONITOR INSPECTION [FW6A-EL] .) Snapshot data items are not displayed, according to detected DTC.

Not applicable

Snapshot data itemUnitDescriptionCorresponding PID/DATA monitor item
LOAD%Calculated engine loadLOAD
ECT°C {°F}Engine coolant temperatureECT
RPMRPMEngine speedRPM
VSSKPH {MPH}Vehicle speedVSS
IAT°C {°F}Intake air temperatureIAT
EG_RUN_TIMETime from engine start
VPWRVModule supply voltageVPWR
APP1%Accelerator pedal position No.1APP1
GEAR_SEL1/2/3/4/5/6Gear shift positionGEAR_SEL
TSSRPMTurbine/input shaft speedTSS
TFT°C {°F}ATF temperatureTFT
OSSRPMOutput shaft speedOSS
LOCK_UPOFF/SLIP/OnTorque converter (TCC condition)LOCK_UP
OIL_PRES_SW2Off/OnOil pressure switch No.2 conditionOP_SW2
OIL_PRES_SW1Off/OnOil pressure switch No.1 conditionOP_SW1
SS_ON_OFFOff/OnOn/off solenoid conditionSS_ON-OFF
APP%Accelerator pedal position No.1APP1
G_INHIBIT_6Off/On6GR is inhibited due to malfunction.
G_INHIBIT_5Off/On5GR is inhibited due to malfunction.
G_INHIBIT_4Off/On4GR is inhibited due to malfunction.
G_INHIBIT_3Off/On3GR is inhibited due to malfunction.
G_INHIBIT_2Off/On2GR is inhibited due to malfunction.
G_INHIBIT_1Off/On1GR is inhibited due to malfunction.
G_INHIBIT_ROff/OnR position is inhibited due to malfunction.
G_INHIBIT_NOff/OnN position is inhibited due to malfunction.
OIL_PRES_SW4Off/OnOil pressure switch No.4 conditionOP_SW4
OIL_PRES_SW3Off/OnOil pressure switch No.3 conditionOP_SW3
EOP_RLYOff/OnElectric AT oil pump relay conditionEOP_RLY
SHIFT_CTRLDEFAULT/MANUAL/C_CONTROL/HIGH_TEMP/D_MANUAL/FAIL_SAFEShift control modeSHIFT_CTRL
SLIP_VALUERPMActual slip value between TSS and OSS
HTM_DISKm {mile}Travel distance since determination of ATF high temperature modeHTM_DIS

Clearing DTCs Procedures

  1. Connect the M-MDS (IDS) to the DLC-2. see scheme 4: Identifying Data Link Connector (DLC-2)
  2. After the vehicle is identified, select the following items from the initialization screen of the IDS. Select "Self Test". Select "Modules". Select "TCM".
  3. Verify the DTC according to the directions on the screen.
  4. Press the clear button on the DTC screen to clear the DTC.
  5. Switch the ignition to off.
  6. Switch the ignition to ON and wait for 5 s or more.
  7. Perform DTC inspection. (See «READING DTCS PROCEDURE»(ref-579439-S13719432922013100700000).)
  8. Verify that no DTCs are displayed.

Foreword

  1. The on-board diagnosis test displays DTCs for locations determined to be malfunctioning based on the operation results from the forced operation of each solenoid and selection of each gear. Therefore, this is an effective mode if DTCs which do not specify the malfunctioning location, such as a gear ratio malfunction, are displayed.
  2. When the following DTCs displayed, perform the on-board diagnostic test.
DTC No.Description
P0729:006GR incorrect ratio
P0731:001GR incorrect ratio
P0732:002GR incorrect ratio
P0733:003GR incorrect ratio
P0734:004GR incorrect ratio
P0735:005GR incorrect ratio
P0736:00Gear reverse incorrect ratio
P0780:00Gear shifting malfunction
P079A:00Shift solenoid No.3 stuck off/On/off solenoid stuck on
P1738:00Automatic transaxle internal malfunction
P1784:00Hi cut valve stuck off/R-3-5 cut valve stuck on
  1. When DTCs are displayed by the on-board diagnosis test, perform the instructions in the applicable DTC troubleshooting.
WARNINGThe on-board diagnosis test forcibly changes gears within the driving shift range while the engine is running. Before implementing the on-board diagnosis test, securely apply the parking brake and set the wheel blocks for both the front and rear wheels. Otherwise, the vehicle will move which could cause injury or property damage.

Note. The time required to perform the diagnostic is 2 to 3 min . If unsafe actions such as shift operation and brake pedal release are detected before the AT warning light flashes, the on-board diagnostic test mode is canceled and the AT warning light flashes 5 times .

Scheme 1725

Scheme 1725

Scheme 1726

Scheme 1726

Scheme 1727

Scheme 1727

Scheme 1728

Scheme 1728

Scheme 1729

Scheme 1729

Scheme 1730

Scheme 1730
  1. Apply the parking brake firmly, and set the wheel blocks for both the front and rear wheels.
  2. Inspect the ATF level. (See «AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION [FW6A-EL]»(ref-579370-S13857790222013100700000).)
  3. Connect the M-MDS (IDS) to the DLC-2. see scheme 5: Identifying Data Link Connector (DLC-2)
  4. Perform vehicle identification using the M-MDS.
  5. Start the engine.
  6. After the vehicle is identified, select the following items from the initialization screen of the IDS. Select "DataLogger". Select "Modules". Select "TCM".
  7. While checking the PID TFT (ATF temperature), warm-up the engine completely and allow the ATF temperature to reach 55 °C {131 °F} or more.
  8. Select the following items from the initialization screen of the IDS. Select "Self Test". Select "Modules". Select "TCM". Select "Retrieve CMDTCs".
  9. Perform the following steps (1) to (5) with the brake pedal depressed. (Scheme 1725): Pressing Brake Pedal NOTE: If the on-board diagnosis test is shut down (AT warning light flashes 5 times), resume the procedure from Step 1. Shift the selector lever to the R position. (Scheme 1726): Shifting Selector Lever To R Position Clear DTCs using the M-MDS and verify that the AT warning light flashes 2 times. (See «ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [FW6A-EL]»(ref-579376-S25255133932013100700000).) (Scheme 1727): AT Warning Light Within 5 s after the AT warning light flashes 2 times, shift the selector lever to the N position and verify that the AT warning light flashes 2 times. (Scheme 1728): Shifting Selector Lever To N Position Within 5 s after the AT warning light flashes 2 times, shift the selector lever to the D position and verify that the AT warning light flashes 3 times. (Scheme 1729): Shifting Selector Lever To D Position NOTE: Approx. 30 s is required until the AT warning light flashes. In addition, shift shock occurs a few times during stand-by. After the AT warning light flashes 3 times, shift the selector lever to the P position. (Scheme 1730): Shifting Selector Lever To P Position
  10. Release the brake pedal.
  11. Perform the DTC inspection using the M-MDS. (See «ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [FW6A-EL]»(ref-579376-S25255133932013100700000).) If any DTCs are displayed, perform troubleshooting according to the corresponding DTC inspection. (See «ON-BOARD DIAGNOSTIC SYSTEM WIRING DIAGRAM [FW6A-EL]»(ref-579376-S20286294132013100700000).)

Simulation Item Table

ItemDescriptionUnit/ConditionOperation condition
SS_ON-OFFOn/off solenoid conditionOff/OnUnder the following conditions: Vehicle stopped Idling at P or N position
SS1_CShift solenoid No.1 target currentAUnder the following conditions: Vehicle stopped Idling at P or N position
SS2_CShift solenoid No.2 target currentAUnder the following conditions: Vehicle stopped Idling at P or N position
SS3_CShift solenoid No.3 target currentAUnder the following conditions: Vehicle stopped Idling at P or N position
SS4_CShift solenoid No.4 target currentAUnder the following conditions: Vehicle stopped Idling at P or N position
SSLU_CTCC control solenoid target currentAUnder the following conditions: ATF temperature (PID: TFT) is 20 °C {68 °F} or more. Output shaft speed (PID: OSS) is 10 rpm or more. Turbine/input shaft speed (PID: TSS) is 1,000 rpm or more. Brake pedal released
SSP_CPressure control solenoid target currentAIdling at P or N position