Turn the vehicle to the OFF (LOCK) mode, then wait 5 seconds or more.
NOTE: Do not open and close the driver's door.
?4.
Turn the vehicle to the ON mode.
?5.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
U0047-00 CAN Communication Failure (Ch2 Bus OFF)
Is DTC U0047-00 indicated?
YES
The failure is duplicated. Go to step 2.
NO
Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.?
2.
EBB CAN circuit resistance check:
EBB CAN circuit resistance check
?1.
Turn the vehicle to the OFF (LOCK) mode with driver's door open.
?2.
Wait for 3 minutes.
NOTE: Do not close the driver's door.
?3.
Disconnect the following connector.
Electric brake booster 26P connector
?4.
Measure the resistance between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Electric brake booster 26P connector: disconnected
The EBB CAN H, EBB CAN L wires are OK. Check for loose terminals and poor connections in the VSA modulator-control unit 46P connector. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the VSA modulator-control unit.?
NO
Repair an open in the wire between the electric brake booster and the VSA modulator-control unit.?
5.
Shorted wire check (EBB CAN H, EBB CAN L lines):
Shorted wire check (EBB CAN H, EBB CAN L lines)
?1.
Disconnect the following connector.
VSA modulator-control unit 46P connector
?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Electric brake booster 26P connector: disconnected
VSA modulator-control unit 46P connector: disconnected
Repair a short to ground in the wire between the electric brake booster and the VSA modulator-control unit.?
NO
The EBB CAN H, EBB CAN L wires are OK. Check for loose terminals and poor connections in the electric brake booster 26P connector. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the electric brake booster.?