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Symptom Troubleshooting - Transmission: Specifications Mazda Tribute I рестайлинг

Automatic Trans 6 illustrations ~1375 words

Fluid Leakage in Torque Converter Area

Use the following procedures to locate the exact source of leakage in the torque converter area. Leakage at the front of transaxle, as evidenced by fluid around the converter housing, may have several sources. By careful observation, it is possible in many instances to pinpoint the source of the leak before removing the transaxle from the vehicle. The paths which the fluid can take to reach the bottom of the converter housing are as follows

Scheme 1

Scheme 1: Leakage Points
Scheme 1: Leakage Points
  1. Fluid leaking by the converter impeller hub seal lip will tend to move along the drive hub and onto the back of the impeller housing. Except in the case of a total seal failure, fluid leakage by the lip of the seal will be deposited on the inside of the converter housing only, near the outside diameter of the housing.
  2. Fluid leakage by the outside diameter of the converter impeller hub seal and the case will follow the same path as leaks by the inside diameter of the seal.
  3. Fluid leakage from the converter-to-flexplate stud weld will appear at the outside diameter of the torque converter, on the back face of flexplate, and in the converter housing only near the flexplate. If a converter-to-flexplate stud leak is suspected, remove converter and pressure check.
  4. Engine oil leaks are sometimes incorrectly diagnosed as transaxle pump seal leaks. The following areas of possible leakage should be checked to determine if engine oil leakage is causing the concern. Leakage at the valve cover may allow oil to flow over the converter housing or seep down between the converter housing and cylinder block causing oil to be present in or at the bottom of the converter housing. Oil plug leaks will allow oil to flow down the rear face of the cylinder block to the converter housing. Leakage at the crankshaft seal will work back to the flexplate and then into the converter housing.

TORQUE CONVERTER DIAGNOSIS

Prior to installing a new or remanufactured torque converter, all diagnostic procedures must be followed. This is to prevent the unnecessary installation of new or remanufactured torque converters. Only after a complete diagnostic evaluation can the decision be made to install a new or remanufactured torque converter.

Begin with the normal diagnostic procedures as follows

  1. Preliminary Inspection.
  2. Know and Understand the Customers Concern.
  3. Verify the Concern - Carry out the Torque Converter Operation Test.
  4. Carry out Diagnostic Procedures. Carry out On-Board Diagnostics. Repair all non-transaxle related DTCs first. Repair all transaxle DTCs. Rerun on-board diagnostics to verify repair. Carry out Line Pressure Test. See «SPECIAL TESTING PROCEDURES»(ref-221905-S18262634212006022600000). Carry out Stall Speed Test. See «SPECIAL TESTING PROCEDURES»(ref-221905-S18262634212006022600000). Carry out Diagnosis by Symptom. See «DIAGNOSIS BY SYMPTOM»(ref-221905-S10402263932006022600000) Use the index to locate the appropriate routine that best describes the symptom(s). The routine will list all possible components that may cause or contribute to the symptom. Check each component listed, diagnose, and repair as required, before repairing the torque converter.

Torque Converter Clutch Operation Test

This test verifies that the torque converter clutch control system and the torque converter are operating correctly.

Carry out the test as follows

  1. Carry out On-Board Diagnostic Test.
  2. Connect a tachometer to the engine.
  3. Bring engine to normal operating temperature by driving the vehicle at highway speeds for approximately 15 minutes in DRIVE position.
  4. After normal operating temperatures are reached, maintain a constant vehicle speed of about 80 km/h (50 mph) and tap the brake pedal with the left foot.
  5. Engine rpm should increase when the brake pedal is tapped, and should decrease about five seconds after the brake pedal is released. If this does not occur, see «TORQUE CONVERTER OPERATION CONCERNS»(ref-221905-S11955936432006022600000). See «TORQUE CONVERTER DIAGNOSIS»(ref-221905-S04014456202006022600000). If the vehicle is at a stop and stalls in DRIVE at idle, move the transaxle range selector lever to the manual 1 position, see «TORQUE CONVERTER OPERATION CONCERNS»(ref-221905-S11955936432006022600000). See «TORQUE CONVERTER DIAGNOSIS»(ref-221905-S04014456202006022600000). Repair as required. If the vehicle does not stall in manual 1, see «DIAGNOSIS BY SYMPTOM»(ref-221905-S10402263932006022600000).

TORQUE CONVERTER CLUTCH (TCC) SOLENOID

TORQUE CONVERTER CLUTCH (TCC) SOLENOID INSPECTION AND ACTION 5 TORQUE CONVERTER CLUTCH (TCC) SOLENOID STEP INSPECTION ACTION 1 ELECTRONIC DIAGNOSTICS Key OFF. Make sure the transaxle vehicle harness connector is fully seated, terminals are fully engaged in connector and in good condition before proceeding. Connect the diagnostic tool. Key ON, Engine OFF (KOEO). Carry out KOEO Test until continuous DTCs have been displayed. Select Output State Test Mode (OTM). Select the mode "ALL ON". Push START to turn outputs "ON". Push STOP to turn outputs "OFF". Does vehicle enter OTM? Yes REMAIN in OTM. Go to next step. No PRESS START. If vehicle does not enter OTM, See SYMPTOM TROUBLESHOOTING CHART - CHARGING SYSTEM. 2 CHECK ELECTRICAL SIGNAL OPERATION CAUTION: Do not pry on the connector. This will damage the connector and can result in a transaxle concern. Press button and pull up on the transaxle vehicle harness connector. Key OFF. Disconnect the Transaxle Hardware Unit 0140-227. Use a mirror to inspect both ends of the connector for damaged or pushed out pins, corrosion, loose wires and missing or damaged seals. Key ON, Engine OFF (KOEO). Measure the voltage between 0140-227 pin 3 W/R and 0140-227 pin 4 V/Y of the transaxle vehicle harness connector. While observing the VOM, press "START" and "STOP" to cycle solenoid output on and off. Does the suspected solenoid output voltage change at least 0.5 volt? Yes Go to step 5. No Go to next step. 3 CHECK CONTINUITY OF SOLENOID SIGNAL AND VPWR HARNESS CIRCUITS Key OFF. Disconnect the PCM 0140-175t/275t. Disconnect the PCM 0140-175b/275b. Disconnect the Transaxle Hardware Unit 0140-227. Measure the resistance between 0140-175t/275t pin 46 V/Y and 0140-227 pin 4 V/Y. Measure the resistance between 0140-175b/275b pin 35 W/R and 0140-175b/275b pin 36 W/R and 0140-227 pin 3 W/R. Is each resistance less than 5 ohms? Yes Go to next step. No REPAIR open circuits). RECONNECT all components. RERUN Quick Test. 4 CHECK SOLENOID/HARNESS FOR SHORTS TO POWER AND GROUND Disconnect the PCM 0140-175t/275t. Disconnect the PCM 0140-175b/275b. Disconnect the Transaxle Hardware Unit 0140-227. Measure the resistance between 0140-175t/275t pin 46 V/Y and 0140-175b/275b pin 35 W/R and 0140-175b/275b pin 36 W/R. Measure the resistance between 0140-175t/275t pin 46 V/Y and 0140-175t/275t pin 41 GY/R, 0140-175b/275b pin 47 B, 0140-175b/275b pin 48 B and 0140-175b/275b pin 49 B and chassis ground. Is each resistance less than 10,000 ohms? Yes Go to next step. No REPAIR short circuit(s). RECONNECT all components. RERUN Quick Test. 5 TRANSAXLE FUNCTIONAL TEST CAUTION: Do not pry on the connector. This will damage the connector and can result in a transaxle concern. Press button and pull up on the transaxle vehicle harness connector. NOTE: LED will turn GREEN when solenoid activates and turns OFF when deactivated. LED will turn RED if an activated solenoid/harness is shorted to B+. LED will remain OFF if an activated solenoid/harness is shorted to ground or no continuity (open circuit). Disconnect the Transaxle Connector. Reconnect the Transmission Tester. Carry out the TCC Solenoid Function Test as outlined in the Transmission Tester Manual. Does TCC (LED green) activate when tester switch is pressed? Yes Go to next step. No Go to step 7. 6 TRANSAXLE DRIVE CYCLE TEST Reconnect the PCM. Carry out Dynamic Testing as outlined in the Transmission Tester Manual. Does TCC activate (LED green) and engine rpm drop? Yes INSTALL a new PCM. RECONNECT all components. RERUN On-Board Diagnostic tests. If symptoms are still present, See DIAGNOSIS BY SYMPTOM. No Go to next step. 7 CHECK RESISTANCE OF SOLENOID/HARNESS Set Bench/Drive switch to BENCH mode. Rotate gear select switch to OHMS CHECK position. Measure the resistance between TCC jack and VPWR jack on the Transmission Tester. Is the resistance between 12.5 and 19.0 ohms? Yes Go to next step. No INSTALL a new solenoid body assembly. 8 CHECK SOLENOID/HARNESS FOR SHORT TO GROUND Measure the resistance between BAT-jack (engine ground) and TCC jack, and VPWR jack on Transmission Tester. Is the resistance greater than 10,000 ohms? Yes INSTALL a new solenoid body assembly. No See DIAGNOSIS BY SYMPTOM to diagnose torque converter clutch

Scheme 2

Scheme 2: TORQUE CONVERTER CLUTCH (TCC) SOLENOID
Scheme 2: TORQUE CONVERTER CLUTCH (TCC) SOLENOID

Scheme 3

Scheme 3
Scheme 3

Scheme 4

Scheme 4
Scheme 4

Scheme 5

Scheme 5
Scheme 5

Scheme 6

Scheme 6
Scheme 6

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