Diagnosis Procedure
WARNING: Always observe the following items for preventing accidental activation.
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose connection (unit side and connector side).
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace the main harness.
2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT
Check the air bag diagnosis sensor unit. Refer to SRC "Work Flow".
Is the inspection result normal?
YES >> Replace the main harness.
NO >> Replace parts whose air bag system has a malfunction.
TCM Branch line circuitDiagnosis Procedure 1.CHECK CONNECTOR 1. Turn the ignition switch OFF. 2. Disconnect the battery cable from the negative terminal. 3. Check the following terminals and connectors for damage, bend ...

Diagnosis Procedure 1.CHECK CONNECTOR 1. Turn the ignition switch OFF. 2. Disconnect the battery cable from the negative terminal. 3. Check the terminals and connectors of the AV control unit for ...
Compression pressure
Inspection
Warm up engine and then turn it off.
Release fuel pressure.
Remove ignition coil and spark plug from each cylinder.
Connect engine tachometer (not required in use of CONSULT).
Install compression gauge (B) with an adapter (A) (commercial
service tool) onto spark plug hole.
...
U0140 Lost communication (BCM)
DTC Logic
DTC DETECTION LOGIC
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
U0140
Lost Communication With Body
Control Module
When the ignition switch is ON,
TCM is unable to receive the
CAN communications signal
from BCM continuously ...