Toyota Corolla Cross: Extreme Hybrid/EV Battery Charging Current (P31B400)
DESCRIPTION
The battery ECU assembly monitors its internal operation, it will set DTCs and perform fail-safe control when it detects the following malfunction.
|
DTC No. | Detection Item |
DTC Detection Condition |
Trouble Area | MIL |
Warning Indicate | Note |
|---|---|---|---|---|---|---|
|
P31B400 | Extreme Hybrid/EV Battery Charging Current |
An abnormal signal is detected by the battery ECU assembly (excessive charging current). (1 trip detection logic) |
Hybrid vehicle control ECU |
Does not come on | Master Warning: Comes on | SAE Code: P31B4 |
CONFIRMATION DRIVING PATTERN
HINT:
After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
Click here .gif)
- Connect the GTS to the DLC3.
- Turn the ignition switch to ON and turn the GTS on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off and wait for 2 minutes or more.
- Turn the ignition switch to ON and turn the GTS on.
- Drive the vehicle for approximately 10 minutes according to the freeze frame data items "Vehicle Speed", "Accelerator Position", "Hybrid/EV Battery Temperature 1 to 6" and "Hybrid/EV Battery Current".
- Enter the following menus: Powertrain / HV battery / Utility / All Readiness.
- Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE, perform driving pattern again.
PROCEDURE
|
1. | CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL) |
(a) Check for DTCs.
Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes|
Result | Proceed to |
|---|---|
|
"P31B400" only is output. |
A |
| DTCs except "P31B400" of hybrid battery system are output. |
B |
| DTCs except "P31B400" of hybrid control system are output. |
C |
(b) Turn the ignition switch off.
| A | .gif) | REPLACE HYBRID VEHICLE CONTROL ECU |
| B | | GO TO DTC CHART (HYBRID BATTERY SYSTEM) |
| C | | GO TO DTC CHART (HYBRID CONTROL SYSTEM) |
READ NEXT:
Hybrid/EV Battery Internal Electronic Failure (P31B549)
DESCRIPTION The battery ECU assembly monitors its internal operation and will store these DTCs when it detects an internal malfunction.
DTC No. Detection Item
DTC Detection Condition
Hybrid/EV Battery Stack 1 Circuit Resistance Out of Range (P33DA1E,P33DB1E)
DESCRIPTION The HV battery is composed of 60 cells (3.7 V each) in series. The battery ECU assembly monitors the internal resistance of each HV battery cell to detect malfunctions of the HV battery.
Hybrid/EV Battery Stack 1 Circuit Resistance Above Threshold (P33E01B,P33E11B)
DESCRIPTION The HV battery is composed of 60 cells (3.7 V each) in series. The battery ECU assembly monitors the internal resistance of each HV battery cell to detect malfunctions of the HV battery.
SEE MORE:
Precaution
PRECAUTION PRECAUTIONS WHEN INSPECTING STOP AND START SYSTEM
NOTICE: When the audio and visual system volume is high, a fail-safe function may operate in order to maintain the operation of stop and start control. The fail-safe function is canceled when the ignition switch is turned off. Using the
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Stop and Start System
DTC No. Detection Item
MIL Warning Indicate
Note Link
P033562 Crankshaft Position Sensor "A" Signal Compare Failure
Does not come on Does not come on (For Mexico Models: Blinks)
SAE Code: P0335
