VSA System Symptom Troubleshooting - ABS indicator, brake system indicator, and VSA indicator do not go off
ABS indicator, brake system indicator, and VSA indicator do not go off
1.
DTC check:

DTC check
?1.
Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

?2.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
     

Are there DTCs indicated?

     
YES
     
     
     
Do the DTC troubleshooting.?
     
NO
     
     
     
Go to step 2.
2.
Fuse check 1:

Fuse check 1
?1.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

?2.
Check the following fuse.
Fuse
No. B10 (7.5 A)
Location
Under-dash fuse/relay box

Is the fuse OK?

     
YES
     
     
     
The fuse is OK. Reinstall the fuse, then go to step 3.
     
NO
     
     
     
Replace the fuse. Turn the ignition switch to ON (II), then turn it to LOCK (0) again, or select the ON mode, then the OFF mode. If the fuse blows again, repair the short to ground on the No. B10 (7.5 A) fuse circuit.?
3.
Fuse check 2:

Fuse check 2
?1.
Check the following fuse.
Fuse
No. A2-6 (40 A)
Location
Under-hood fuse/relay box

Is the fuse OK?

     
YES
     
     
     
The fuse is OK. Reinstall the fuse, then go to step 4.
     
NO
     
     
     
Replace the fuse. If the fuse blows again, repair the short to ground on the No. A2-6 (40 A) fuse circuit.?
4.
Gauge control module operation check:

Gauge control module operation check
?1.
Do the gauge control module self-diagnostic function.

Is the gauge control module OK?

     
YES
     
     
     
Go to step 5.
     
NO
     
     
     
5.
Open wire check (IG1 VSA/ABS line):

Open wire check (IG1 VSA/ABS line)
?1.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

?2.
Disconnect the following connector.

?3.
Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

?4.
Measure the voltage between test points 1 and 2.
Test condition
IG ON (II) or ON mode
 
VSA modulator-control unit 21P connector: disconnected
Test circuit
IG1 VSA/ABS
Test point 1
VSA modulator-control unit 21P connector No. 6 (YEL)
Test point 2
Body ground


Is there battery voltage?

     
YES
     
     
     
The IG1 VSA/ABS wire is OK. Go to step 6.
     
NO
     
     
     
Repair an open in the wire between the No. B10 (7.5 A) fuse in the under-dash fuse/relay box and the VSA modulator-control unit.?
6.
Open wire check (GND line):

Open wire check (GND line)
?1.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

?2.
Check for continuity between test points 1 and 2.
Test condition
IG LOCK (0) or OFF mode
 
VSA modulator-control unit 21P connector: disconnected
Test circuit
GND
Test point 1
VSA modulator-control unit 21P connector No. 1 (BLK)
Test point 2
Body ground


Is there continuity?

     
YES
     
     
     
The GND wire is OK. Go to step 7.
     
NO
     
     
     
Repair an open in the wire between the VSA modulator-control unit and body ground (G202).?
7.
Open wire check (+B ABS/VSA FSR line):

Open wire check (+B ABS/VSA FSR line)
?1.
Measure the voltage between test points 1 and 2.
Test condition
IG LOCK (0) or OFF mode
 
VSA modulator-control unit 21P connector: disconnected
Test circuit
+B ABS/VSA FSR
Test point 1
VSA modulator-control unit 21P connector No. 3 (WHT)
Test point 2
Body ground


Is there battery voltage?

     
YES
     
     
     
The +B ABS/VSA FSR wire is OK. Go to step 8.
     
NO
     
     
     
Repair an open in the wire between the No. A2-6 (40 A) fuse in the under-hood fuse/relay box and the VSA modulator-control unit.?
8.
Open wire check (F CAN-L, F CAN-H lines):

Open wire check (F CAN-L, F CAN-H lines)
?1.
Disconnect the following connector.

?2.
Check for continuity between test points 1 and 2.
Test condition
IG LOCK (0) or OFF mode
 
VSA modulator-control unit 21P connector: disconnected
 
Gauge control module connector A (32P): disconnected
Test circuit
F CAN-L
Test point 1
VSA modulator-control unit 21P connector No. 15 (RED)
Test point 2
Gauge control module connector A (32P) No. A20 (RED)

Test circuit
F CAN-H
Test point 1
VSA modulator-control unit 21P connector No. 8 (WHT)
Test point 2
Gauge control module connector A (32P) No. A19 (WHT)


Is there continuity?

     
YES
     
     
     
The F CAN-L and F CAN-H wires are OK. Go to step 9.
     
NO
     
     
     
Repair an open in the wire between the gauge control module and the VSA modulator-control unit.?
9.
VSA modulator-control unit check (update):

VSA modulator-control unit check (update)
?1.
Reconnect the following connectors.

?2.
Update the VSA modulator-control unit if it does not have the latest software.

?3.
Turn the ignition switch to LOCK (0), then turn it to ON (II) again, or select the OFF mode, then the ON mode.

?4.
Check the ABS indicator, the brake system indicator, and the VSA indicator for several seconds when the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

Do the indicators come on then go off?

     
YES
     
     
     
Troubleshooting is complete.?
     
NO
     
     
     
Check for loose terminals in the VSA modulator-control unit 21P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit.?