B1015

DTC Troubleshooting: B1000

DTC B1000: Communication Bus Line Error (BUS-OFF)

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to LOCK (0) and then back to ON (II).

3. Wait for at least 6 seconds.

4. Check for DTCs with the HDS.

Is DTC B1000 indicated?
YES - Go to step 5.

NO - Intermittent failure, the communication bus line is OK at this time. Check for loose or poor connections, or worn/shorted wires. If the connections are good, check the battery condition Testing and Inspection and the charging system.


5. Check for DTCs with the HDS.

Are DTCs B1005, B1007, B1008, B1011, B1013, B1014, B1015, and B1016 also indicated?
YES - Go to step 6.

NO - Replace the MICU.


6. Disconnect the appropriate connector at each control unit in the table one at a time. Clear the DTC and wait for at least 6 seconds, then recheck for DTCs after each unit is disconnected.





Is DTC B1000 indicated with each individual unit disconnected?
YES - Go to step 7.

NO - Replace the control unit that was disconnected and B1000 did not reset.


7. Disconnect all of the appropriate connectors for each of the units in the table.





8. Disconnect driver's under-dash fuse/relay box connectors X (39P), N (45P), J (30P), G (8P), D (17P), and T (6P).

9. Check for continuity between each of the driver's under-dash fuse/relay box terminals listed in the table below and body ground.





Is there continuity?
YES - Repair the short in the wire between the driver's under-dash fuse/relay box and the affected control unit.

NO - Replace the driver's under-dash fuse/relay box.

DTC Troubleshooting: B1013, B1014, B1015

DTC B1013: MICU Lost Communication with Driver's MPCS Unit (ASLOCKSW Message)

DTC B1014: MICU Lost Communication with Driver's MPCS Unit (DOORSW Message)

DTC B1015: MICU Lost Communication with Driver's MPCS Unit (DRLOCKSW Message)

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A. Troubleshooting - B-CAN System Diagnosis Test Mode A

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to LOCK (0) and then back to ON (II).

3. Wait for at least 6 seconds.

4. Check for DTCs with the HDS.

Is DTCs B1013, B1014, and/or B1015 indicated?
YES - Go to step 5.

NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections between the MICU and the driver's MPCS unit.


5. Check for DTCs with the HDS.

Are DTCs B1064 B1065, B1181, B1182, B1613, B1614, B1615, and B1811 all indicated?
YES - Do the driver's MPCS unit input test. Multiplex Integrated Control System Driver's MPCS Unit Input Test

NO - Check for an open in the communication circuit between the MICU and the gauge control module. If the circuit is OK, replace the MICU. If the circuit is bad, repair the open.