DTC P0882

id050200802800

DTC P0882

TCM B+ low
DETECTION CONDITION
•  The TCM monitors the voltage of back-up battery positive terminal at TCM terminal 1A. If the TCM detects battery positive terminal voltage 4 V or less for 100 s or more, the TCM determines that the backup voltage circuit has malfunction.
Diagnostic support note
•  This is continuous monitor (CCM).
•  MIL illuminates if TCM detects the above malfunction condition during the first drive cycle.
•  PENDING CODE is not available.
•  FREEZE FRAME DATA is available.
•  AT warning light does not illuminate.
•  DTC is stored in TCM memory.
POSSIBLE CAUSE
•  Fuse malfunction (MAIN 120 A, BTN 30 A, ROOM 15 A)
•  Poor connection of TCM connector
•  Open circuit i in wiring harness between battery positive terminal and TCM terminal 1A
•  Short to ground in wiring harness between battery positive terminal and TCM terminal 1A
•  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 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 FUSE
•  Turn the ignition switch to the LOCK position.
•  Inspect the following fuses:
―  MAIN 120 A
―  BTN 30 A
―  ROOM 15 A
•  Is there any malfunction?
Yes
•  If fuse is blown, replace it, then go to Step 7.
•  If the fuse is not installed correctly, install it correctly, then go to Step 7.
No
Go to the next step.
4
INSPECT TCM CONNECTOR FOR POOR CONNECTION
•  Disconnect the battery cables.
•  Disconnect the TCM connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Are the connector and terminals normal?
Yes
Go to the next step.
No
Repair or replace the connector and/or terminal, then go to Step 7.
5
INSPECT B+ CIRCUIT FOR OPEN CIRCUIT
•  Disconnect the battery positive cable.
•  Inspect for continuity between the battery positive terminal (wiring harness-side) and TCM terminal 1A (wiring harness-side).
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness, then go to Step 7.
6
INSPECT MONITOR CIRCUIT FOR SHORT TO GROUND
•  Inspect for continuity between TCM terminal 1A (wiring harness-side) and body ground.
•  Is there continuity?
Yes
Repair or replace the wiring harness and install new fuse, then go to the next step.
No
Go to the next step.
7
VERIFY TROUBLESHOOTING OF DTC P0882 COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Turn the ignition switch to the ON position (engine off).
•  Clear DTC from TCM memory using the M-MDS.
•  Start the engine and warm it up completely.
•  Is the same DTC present?
Yes
Replace the TCM, then go to the next step.
(See TCM REMOVAL/INSTALLATION.)
No
Go to the next step.
8
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “After Repair Procedure”.
•  Are any DTC present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [RC4A-EL].)
No
DTC troubleshooting completed.