Diagnosis procedure
1.Check connector
Is the inspection result normal? Yes >> go to 2.
No >> repair the terminal and connector.
2.Check harness for open circuit

Is the measurement value within the specification? Yes >> go to 3.
No >> repair the ecm branch line.
3.Check power supply and ground circuit
Check the power supply and the ground circuit of the ECM. Refer to EC-164, "Diagnosis Procedure".
Is the inspection result normal? YES (Present error)>>Replace the ECM. Refer to EC-485, "Removal and Installation".
YES (Past error)>>Error was detected in the ECM branch line.
NO >> Repair the power supply and the ground circuit.
Main line between ipdm-e and dlc circuit
Abs branch line circuitTilt operation
Pull the lock lever down 1 and adjust the steering
wheel up or down 2 to the desired position.
Push the lock lever up 1 firmly to lock the
steering wheel in place.
WARNINGDo not adjust the steering wheel while
driving. You could lose control of your
vehicle and cause an accide ...
P0863 TCM Communication
DTC Logic
DTC DETECTION LOGIC
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
Possible causes
P0863
TCM COMMUNICATION
(TCM Communication Circuit)
An error is detected at the initial CAN diagnosis of TCM.
TCM
DTC CONFIRMATIO ...
Removal and installation
Ipdm e/r
Exploded view
Ipdm e/r
Ipdm e/r cover a
Ipdm e/r cover b
Removal and installation
Caution:
Ipdm e/r integrated relays are not serviceable and must not be removed
from unit.
Removal
Remove inlet air duct (upper). Refer to em-25, "removal and
installation". ...