Communication Diagnosis Procedure

Check the communication between BCM and local control unit (LCU).

How To Perform Communication Diagnosis:

How To Perform Communication Diagnosis




Description
In this mode, a malfunction code is indicated by the number of flashes from the front map lamps and step lamps as shown.

After indicator lamp turns on for 2 seconds then off for 2 seconds, it flashes [cycling ON (0.5 sec.) /OFF (0.5 sec.) ] to indicate a malfunction code of the first digit. Then, 1 second after indicator lamp turns off, it again flashes [cycling ON (0.5 sec.) /OFF (0.5 sec.) ] to indicate a malfunction code of the second digit.

For example, the indicator lamp goes on and off for 0.5 seconds twice and after 1.0 seconds, it goes on and off for 0.5 seconds four times. This indicates malfunction code.

Malfunction Code Table Part 1:

Malfunction Code Table Part 2:

Malfunction Code Table

NOTE:
- For a specific local control unit (LCU), either "PAST COMM DATA" or "PAST NO RESPONSE" may be displayed instead of the above results. This is caused by the data record, so erase the records.
(The display only shows the fault records, they are not malfunctions caused during the diagnosis. One possible cause is that an irreproducible fault symptom occurred.)
- Follow the steps below to erase the memory
Carry out either disconnect BCM battery power supply or erase memory with CONSULT-II.
- With the battery connected, if the local control unit (LCU) connector is disconnected and left for approximately 1 minute, the BCM stores "NO RESPONSE" record.

Cancel Of Communication Diagnosis
If the following conditions are satisfied, the communication diagnosis is cancelled.
- Turn ignition switch OFF.
- Drive the vehicle more than 7 km/h (4 MPH).
- Ten minutes have passed since the diagnosis result indication start without any diagnosis cancel operation.

Communication System A Step 1:

Communication System A Step 2:

COMMUNICATION SYSTEM A

Communication System B Step 1 - 2:

COMMUNICATION SYSTEM B

Communication System C Step 1 - 2:

COMMUNICATION SYSTEM C