Description
This malfunction is detected when the A/T does not shift into 1GR position as instructed by TCM. This is not only caused by electrical malfunction (circuits open or shorted) but by mechanical malfunction such as control valve sticking, improper solenoid valve operation, etc.
DTC Logic
DTC DETECTION LOGIC
DTC | Trouble diagnosis name | DTC detection condition | Possible causes |
P073F | Unable to Engage Gear 1 | Under the following diagnosis
conditions, the gear ratio is
3.033 or more continuously for
2 seconds or more. - Diagnosis condition - Shifting is not in progress. - Input speed: 300 rpm or more - Output speed: 300 rpm or more - Engine speed: (Input speed - 50 rpm) or more− - Selector lever: D position - Gear: 1st - Throttle position: 3/8 or more |
- Low clutch solenoid valve - Control valve assembly |
Under the following diagnosis
conditions, the gear ratio is
3.033 or more continuously for
2 seconds or more. - Diagnosis condition - Shifting is not in progress. - Input speed: 300 rpm or more - Output speed: 300 rpm or more - Engine speed: (Input speed - 50 rpm) or more - Selector lever: 1 position - Throttle position: 0.7/8 or more |
- Low clutch solenoid valve - Control valve assembly |
DTC CONFIRMATION PROCEDURE
CAUTION:
1.PREPARATION BEFORE WORK
If another "DTC CONFIRMATION PROCEDURE" occurs just before, turn ignition switch OFF and wait for at least 10 seconds, then perform the next test.
>> GO TO 2.
2.CHECK DTC DETECTION (CHECK 1)
With CONSULT
NOTE: "1ST GR FNCTN P0731" can be used in this diagnosis.
Selector lever : D position
Gear : 1GR
Accelerator pedal position : 3/8 or more
Vehicle speed : 5 km/h (4 MPH) or more
3. Keep the current driving status for 2 seconds or more if CONSULT screen changes from "OUT OFCONDITION" to "TESTING".
CAUTION: When "TESTING" is not indicated on CONSULT for a long time, check "Self Diagnostic Results" in "TRANSMISSION". When a DTC other than "P073F" is detected, check the DTC. Refer to TM, "DTC Index".
With GST
1. Drive vehicle and maintain the following conditions for 2 seconds or more.
Selector lever : D position
Gear : 1GR
Accelerator pedal position : 3/8 or more
Vehicle speed : 5 km/h (4 MPH) or more
2. Check the first trip DTC.
Is "OUT OF CONDITION", "STOP VEHICLE", or "COMPLETED RESULT NG" displayed? / Is "P073F" detected?
YES-1 (OUT OF CONDITION.)>>Perform "step 2" again.
YES-2 (STOP VEHICLE.)>>GO TO 3.
YES-3 (COMPLETED RESULT NG)>>Go to TM, "Diagnosis Procedure".
YES-4 ("P073F" is detected.)>>Go to TM, "Diagnosis Procedure".
NO >> GO TO 3.
3. CHECK DTC DETECTION (CHECK 2)
With CONSULT
NOTE: "1ST GR FNCTN P0731" can be used in this diagnosis.
Selector lever : 1 position
Accelerator pedal position : 0.7/8 or more
Vehicle speed : 5 km/h (4 MPH) or more
3. Keep the current driving status for 2 seconds or more if CONSULT screen changes from "OUT OFCONDITION" to "TESTING".
CAUTION: When "TESTING" is not indicated on CONSULT for a long time, check "Self Diagnostic Results" in "TRANSMISSION". When a DTC other than "P073F" is detected, check the DTC. Refer to TM, "DTC Index".
With GST
1. Drive vehicle and maintain the following conditions for 2 seconds or more.
Selector lever : 1 position
Throttle position : 0.7/8 or more
Vehicle speed : 5 km/h (4 MPH) or more
2. Check the first trip DTC.
Is "OUT OF CONDITION", "STOP VEHICLE", or "COMPLETED RESULT NG" displayed? / Is "P073F" detected?
YES-1 (OUT OF CONDITION.)>>Perform step 3 again.
YES-2 (STOP VEHICLE.)>>GO TO 4.
YES-3 (COMPLETED RESULT NG)>>Go to TM, "Diagnosis Procedure".
YES-4 ("P073F" is detected.)>>Go to TM, "Diagnosis Procedure".
NO >> GO TO 4.
4.CHECK SYMPTOM
>> INSPECTION END
Diagnosis Procedure
1.MALFUNCTION CAUSE SIMULATION TEST
Refer to GI, "Intermittent Incident".
Is the check result normal?
YES >> Replace the transaxle assembly. Refer to TM, "Removal and Installation".
NO >> Repair or replace the malfunctioning parts.
Description This malfunction is detected when the A/T does not shift into reverse position as instructed by TCM. This is not only caused by electrical malfunction (circuits open or shorted) but by ...
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Exploded View
1. Circlip 2. Dust shield 3. Slide joint housing
4. Snap ring 5. Spider assembly 6. Boot band
7. Boot 8. Shaft 9. Damper band
10. Dynamic damper 11. Circlip 12. Joint sub-assembly
Wheel side
Disassembly and Assembly
DISASSEMBLY
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Fix shaft with a vise.
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Exploded View
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4. Front cable 5. Rear cable (LH) 6. Rear cable (RH)
Removal and Installation
REMOVAL
Remove rear wheel and tire assemblies using power tool. Refer to WT
"Adjustment".
Remove the center ...