DTC Troubleshooting: C1022-14
DTC C1022-14: Power Source Failure for Pump Motor
NOTE: Before you troubleshoot, review the general troubleshooting information.

DTC Description
DTC
Freeze Frame
C1022-14 Power Source Failure for Pump Motor
    

1.
Problem verification:

Problem verification
?1.
Turn the vehicle to the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Turn the vehicle to the OFF (LOCK) mode.

?4.
Test-drive the vehicle at 9 mph (15 km/h) or more for 20 seconds or more.
NOTE: Drive the vehicle on the road, not on a lift.

?5.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
C1022-14 Power Source Failure for Pump Motor
    

Is DTC C1022-14 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.
Fuse check:

Fuse check
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Check the following fuse.
Fuse
No. A3-3 (40 A)
Location
Under-hood fuse/relay box

Is the fuse OK?

     
YES
     
     
     
The fuse is OK. Reinstall the fuse, then go to step 5.
     
NO
     
     
     
Go to step 3.
3.
Shorted wire check (+B ABS/VSA MTR line):

Shorted wire check (+B ABS/VSA MTR line)
?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
 
VSA modulator-control unit 46P connector: disconnected
Test point 1
VSA modulator-control unit 46P connector No. 3
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
Repair a short to body ground in the wire between the No. A3-3 (40 A) fuse in the under-hood fuse/relay box and the VSA modulator-control unit.?
     
NO
     
     
     
The +B ABS/VSA MTR wire is not shorted to body ground. Install a new No. A3-3 (40 A) fuse in the under-hood fuse/relay box, then go to step 4.
4.
VSA modulator-control unit check:

VSA modulator-control unit check
?1.
Reconnect the following connector.
VSA modulator-control unit 46P connector

?2.
Turn the vehicle to the ON mode.

?3.
Clear the DTC with the HDS.


?4.
Turn the vehicle to the OFF (LOCK) mode.

?5.
Test-drive the vehicle at 9 mph (15 km/h) or more for 20 seconds or more.
NOTE: Drive the vehicle on the road, not on a lift.

?6.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
C1022-14 Power Source Failure for Pump Motor
    

Is DTC C1022-14 indicated?

     
YES
     
     
     
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
     
     
     
Troubleshooting is complete.?
5.
Open wire check (+B ABS/VSA MTR line):

Open wire check (+B ABS/VSA MTR line)
?1.
Disconnect the following connector.
VSA modulator-control unit 46P connector

?2.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
VSA modulator-control unit 46P connector: disconnected
Test point 1
VSA modulator-control unit 46P connector No. 3
Test point 2
Body ground

Is there battery voltage?

     
YES
     
     
     
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 No. A3-3 (40 A) fuse in the under-hood fuse/relay box and the VSA modulator-control unit.?