DTC Troubleshooting: P154A
DTC P154A : Battery Sensor Internal Failure
DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P154A Battery Sensor Internal Failure
DTC (PGM-FI)
1.
Problem verification:
Problem verification
?1.
Turn the vehicle to the ON mode.
?2.
Clear the DTC with the HDS, and wait 5 seconds.
Clear DTC
?3.
Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P154A Battery Sensor Internal Failure
Is DTC P154A indicated?
The failure is duplicated. Go to step 2.
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the 12 volt battery sensor and the PCM. 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.
Determine possible failure area (12 volt battery sensor, others):
Determine possible failure area (12 volt battery sensor, others)
?1.
Turn the vehicle to the OFF (LOCK) mode.
?2.
Disconnect the following connector.
12 volt battery sensor 3P connector
?3.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
12 volt battery sensor 3P connector: disconnected
Test point 1
12 volt battery sensor 3P connector No. 1
Test point 2
Body ground
Is there battery voltage?
3.
Fuse check:
Fuse check
?1.
Turn the vehicle to the OFF (LOCK) mode.
?2.
Check the following fuse.
Fuse
No. B15 (7.5 A)
Location
Under-hood fuse/relay box
Is the fuse OK?
Repair an open in the +B BATT SNSR wire between the 12 volt battery sensor and the No. B15 (7.5 A) fuse.?
Repair a short in the +B BATT SNSR wire between the 12 volt battery sensor and the No. B15 (7.5 A) fuse. Also replace the No. B15 (7.5 A) fuse.?