DTC P0756 [SJ6A-EL]

id050208808400

DTC P0756

Shift solenoid B malfunction (stuck off)

DETECTION CONDITION

• TCM detects that shift solenoid B does not change from off when engine is running
Diagnostic support note:
• MIL illuminates if TCM detects the above malfunction conditions in two consecutive drive cycles.
• PENDING CODE is available.
• FREEZE FRAME DATA is available.
• The AT warning light illuminates.
• DTC is stored in TCM memory.

POSSIBLE CAUSE

• ATF level low
• Deteriorated ATF
• Line pressure low
• Shift solenoid B stuck off
• Control valve body malfunction
• TCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
• Verify related Service Bulletins and/or on-line repair information availability.
• Is any related repair information available?
Yes
Perform repair or diagnosis according to the available repair information.
• If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
INSPECT FOR DTC
• Turn the ignition switch to the ON position (engine off).
• Inspect for DTCs.
• Are any other DTCs output?
Yes
Follow the applicable DTC inspection procedure, then go to the next step. (See DTC TABLE [SJ6A-EL].)
No
Go to the next step.
4
INSPECT ATF CONDITION
• Turn the ignition switch to the LOCK position.
• Inspect ATF condition.
- Transparent red: Normal
- Milky: Water mixed in fluid
- Reddish brown: Deteriorated ATF
• Is it normal?
Yes
Go to the next step.
No
If the ATF color milky or reddish brown, repair or replace AT, then go to Step 7.
5

INSPECT ATF LEVEL

• Start the engine.
• Warm up the AT.
• Is the ATF level within the specification?
Yes
Go to the next step.
No
Add ATF to the specified level, then go to Step 7.
6

INSPECT LINE PRESSURE

• Start the engine.
• Measure the line pressure.
• Are the line pressures within the specifications?
Yes
Go to the next step.
No
• All ranges: Replace the oil pump or control valve body, then go to the next step.
• Any ranges: Replace the AT, then go the next step.
7
VERIFY TROUBLESHOOTING OF DTC P0756 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the TCM memory using the M-MDS.
• Start the engine.
• Warm up AT.
• Drive the vehicle in D range and make sure that the gears shift smoothly from 1GR to 6GR.
• Is the PENDING CODE for this DTC present?
Yes
Replace the TCM, then go to the next step.
No
Go to the next step.
8
VERIFY AFTER REPAIR PROCEDURE
• Perform the "After Repair Procedure".
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
DTC troubleshooting completed.