DTC P0755, P0757, P0758 [5R55S]

id0502c1815000

DTC P0755

Shift solenoid B circuit malfunction (open or short circuit)

DTC P0757

Shift solenoid B malfunction (stuck on)

DTC P0758

Shift solenoid B circuit malfunction (open or short circuit)
DETECTION CONDITION
•  P0755: Open or short circuit in circuit between shift solenoid B and TCM, or in shift solenoid B internal circuit.
•  P0757: Shift solenoid B mechanically stuck on.
•  P0758: Open or short circuit in circuit between shift solenoid B and TCM, or in shift solenoid B internal circuit.
POSSIBLE CAUSE
•  Shift solenoid B malfunction.
•  Short to ground in wiring harness between AT connector terminal I (wiring harness-side) and TCM terminal CK (wiring harness-side).
•  Short to ground in wiring harness between AT connector terminal F (wiring harness-side) and TCM terminal C (wiring harness-side).
•  Short to power supply in wiring harness between AT connector terminal F (wiring harness-side) and TCM terminal C (wiring harness-side).
•  Open circuit in wiring harness between AT connector terminal I (wiring harness-side) and TCM terminal CK (wiring harness-side).
•  Open circuit in wiring harness between AT connector terminal F (wiring harness-side) and TCM terminal C (wiring harness-side).
•  Damaged connector between AT connector and TCM.
•  TCM malfunction.

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
•  Has the 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 SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
INSPECT AT CONNECTOR FOR POOR CONNECTION
•  Turn the engine switch to the LOCK position.
•  Inspect AT connector connection.
•  Disconnect the AT connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Is the connection normal?
Yes
Go to the next step.
No
Repair or replace the connector and/or terminals, then go to Step 10.
4
INSPECT POWER SUPPLY CIRCUIT
•  Turn the engine switch to the ON position (engine off).
•  Inspect voltage at AT connector terminal I (wiring harness-side).
•  Is the voltage approx. 12 V?
Yes
Go to the next step.
No
Go to Step 6.
5
INSPECT RESISTANCE
•  Turn the engine switch to the LOCK position.
•  Inspect resistance between AT terminal I and F (transmission case side).
•  Is resistance within 16—45 ohms?
Yes
Go to the next step.
No
Replace the shift solenoid B, then go to Step 10.
6
INSPECT TCM CONNECTOR FOR POOR CONNECTION
•  Disconnect the TCM connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Is the connection normal?
Yes
Go to the next step.
No
Repair or replace connector and/or terminals, then go to Step 10.
7
INSPECT SHIFT SOLENOID B CIRCUIT FOR OPEN CIRCUIT
•  Inspect for continuity between the TCM terminal (wiring harness-side) and the AT connector terminal (wiring harness-side).
―  CK and I
―  C and F
•  Is there continuity between terminals?
Yes
Go to the next step.
No
Repair or replace the wiring harness, then go to Step 10.
8
INSPECT SHIFT SOLENOID B CIRCUIT FOR SHORT TO GROUND
•  Inspect continuity between AT connector terminal (wiring harness-side) and body ground.
―  I and body ground
―  F and body ground
•  Is there continuity?
Yes
Repair or replace the wiring harness, then go to the Step 10.
No
Go to the next step.
9
INSPECT SHIFT SOLENOID B CIRCUIT FOR SHORT TO POWER SUPPLY
•  Turn the engine switch to the ON position (engine off).
•  Inspect voltage at AT connector terminal F (wiring harness-side).
•  Is the voltage 0 V?
Yes
Go to the next step.
No
Repair or replace the wiring harness, then go to the next step.
10
VERIFY TROUBLESHOOTING OF DTC P0755, P0757 OR P0758 COMPLETED
•  Make sure to reconnect all the disconnected connectors.
•  Clear the DTC from memory using the IDS/PDS.
•  Perform the “After Repair Procedure”.
•  Are any DTCs present?
Yes
Replace the TCM, then go to the next step.
(See TCM REMOVAL/INSTALLATION [5R55S].)
No
Go to the next step.
11
VERIFY DTCS
•  Are DTCs except for P0755, P0757 and P0758 output?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [5R55S].)
No
DTC troubleshooting completed.