DTC Troubleshooting: C0020-14, C1022-14
DTC C0020-14: Pump Motor Circuit Failure (Stuck OFF)
DTC C1022-14: Power Source Failure for Pump Motor
NOTE: Before you troubleshoot, review the general troubleshooting information.

DTC Description
DTC
Freeze Frame
C0020-14 Pump Motor Circuit Failure (Stuck OFF)
    
C1022-14 Power Source Failure for Pump Motor
    

1.
DTC check:

DTC check
?1.
Turn the vehicle to the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Turn the vehicle to the OFF (LOCK) mode, then start the engine.

?4.
Wait 20 seconds or more.

?5.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
C0020-12 Pump Motor Circuit Failure (Stuck ON)
    
C0020-14 Pump Motor Circuit Failure (Stuck OFF)
    
C1022-14 Power Source Failure for Pump Motor
    

Is DTC C0020-14 or C1022-14 indicated?

     
YES
     
     
     
If only DTC C0020-14 or C1022-14 are indicated, go to step 2.
     
YES
     
     
     
If DTC C0020-12 is also indicated, go to DTC C0020-12.?
     
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. A2-7 (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 38P connector

?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
VSA modulator-control unit 38P connector: disconnected
Test point 1
VSA modulator-control unit 38P connector No. 2
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
Repair a short to body ground in the wire between the No. A2-7 (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 new No. A2-7 (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 38P 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, then start the engine.

?5.
Wait 20 seconds or more.

?6.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
C0020-14 Pump Motor Circuit Failure (Stuck OFF)
    
C1022-14 Power Source Failure for Pump Motor
    

Is DTC C0020-14 or C1022-14 indicated?

     
YES
     
     
     
Go to step 6.
     
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 38P connector

?2.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
VSA modulator-control unit 38P connector: disconnected
Test point 1
VSA modulator-control unit 38P connector No. 2
Test point 2
Body ground

Is there battery voltage?

     
YES
     
     
     
The +B ABS/VSA MTR wire is OK. Go to step 6.
     
NO
     
     
     
Repair an open in the wire between the No. A2-7 (40 A) fuse in the under-hood fuse/relay box and the VSA modulator-control unit.?
6.
VSA modulator-control unit check (update):

VSA modulator-control unit check (update)
?1.
Reconnect the following connector.
VSA modulator-control unit 38P connector (if disconnected)

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

?3.
Turn the vehicle to the OFF (LOCK) mode, then start the engine.

?4.
Wait 20 seconds or more.

?5.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
     

Is DTC C0020-14 or C1022-14 indicated?

     
YES
     
     
     
Check for loose terminals and poor connections in the VSA modulator-control unit 38P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit.?
     
NO
     
     
     
Troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.?