DTC DETECTION LOGIC
| DTC | Trouble diagnosis name | DTC detection condition | Possible causes |
| P0890 | Transmission control module power relay sense circuit low | The battery voltage supplied to the TCM is
less than 8.4 V continuously for 200 msec or
more under the following diagnosis condition: - Diagnosis condition - TCM power supply voltage: More than 11 V |
Harness or connector (TCM power supply (back-up) circuit is open or shorted.) |
DTC CONFIRMATION PROCEDURE
1.PREPARATION BEFORE WORK
If another "DTC CONFIRMATION PROCEDURE" occurs just before, turn ignition switch OFF and wait for at least 10 seconds, then perform the next test.
>> GO TO 2.
2.CHECK DTC DETECTION
Is "P0890" detected?
YES >> Go to TM "Diagnosis Procedure".
NO >> INSPECTION END
1.CHECK TCM POWER SUPPLY (BACK-UP) CIRCUIT

Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI "Intermittent Incident".
NO >> GO TO 2.
2.DETECT MALFUNCTIONING ITEMS
Check the following items:
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI "Intermittent Incident".
NO >> Repair or replace malfunctioning parts.
P0863 TCM CommunicationDTC Logic DTC DETECTION LOGIC DTC Trouble diagnosis name DTC detection condition Possible causes P0863 TCM Communication Circui An error is detected at the initial CA ...
Component parts
Component Parts Location
1 ABS actuator and electric unit (control
unit)
2 IPDM E/R 3 Brake fluid level switch
(view with IPDM E/R removed)
4 Front wheel sensor 5 Rear wheel sensor 6 VDC OFF switch
7 Steering angle sensor
(view with steering wheel and spiral
cable removed)
8 Stop lamp ...
Driver air bag module
Exploded View
1. Driver air bag module 2. Steering wheel
Removal and Installation
WARNING:
Always observe the following items for preventing accidental activation.
Before servicing, turn ignition switch OFF, disconnect both
battery terminals, then wait at least three
minutes or mor ...