DTC P1B05:00 [BECM (e-SKYACTIV)]
id300201016200
Outline
System malfunction location |
BECM power supply system: Low voltage malfunction |
||||
---|---|---|---|---|---|
Detection condition
|
• The BECM detects that the voltage value in the low voltage side power supply circuit is less than 8 V for 1 s.
|
||||
Fail-safe
|
• Refer to "DTC Table" and "Fail-safe Function Malfunction Contents Table". (See DTC TABLE [BECM (e-SKYACTIV)].)
|
||||
Possible cause
|
• Lead-acid battery malfunction
High voltage battery malfunction
• Internal parts malfunction
|
||||
System wiring diagram
|
• Not applicable
|
||||
Connector diagram
|
• Not applicable
|
Diagnostic Procedure
Step |
Inspection |
Results |
Action |
---|---|---|---|
1
|
RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION
• Record the snapshot data.
|
—
|
Go to the next step.
|
2
|
INSPECT LEAD-ACID BATTERY FOR MALFUNCTION
• Inspect the applicable part.
(See LEAD-ACID BATTERY INSPECTION.)
• Is the part normal?
|
Yes
|
Go to the next step.
|
No
|
Recharge or replace the lead-acid battery and perform the repair completion verification 1.
(See LEAD-ACID BATTERY RECHARGING.)
|
||
Repair completion verification 1
|
VERIFY THAT VEHICLE IS REPAIRED
• Install/connect the part removed/disconnected during the troubleshooting procedure.
• Clear the DTC recorded in the memory.
(See CLEARING DTC.)
• Replicate the vehicle conditions at the time the DTC was detected using the following procedure.
• Perform the DTC inspection for the BECM.
(See DTC INSPECTION.)
• Is the same Pending DTC present?
|
Yes
|
Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
If the CAN communication is normal, perform the diagnosis from Step 1.
• If the malfunction recurs, replace the high voltage battery, then go to the next step.
|
No
|
Go to the next step.
|
||
Repair completion verification 2
|
VERIFY IF OTHER DTCs DISPLAYED
• Perform the DTC inspection.
(See DTC INSPECTION.)
• Are any other DTCs displayed?
|
Yes
|
Repair the malfunctioning location according to the applicable DTC troubleshooting.
|
No
|
DTC troubleshooting completed.
|