Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Hybrid/EV Battery Control System Over Temperature (P30004B)

DESCRIPTION

The battery ECU assembly monitors the temperature of the HV battery to detect if it becomes excessively high.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

Note

P30004B

Hybrid/EV Battery Control System Over Temperature

The battery ECU assembly detects a HV battery cooling system error signal.

(1 trip detection logic)

  • Hybrid vehicle control ECU
  • HV battery

Does not come on

Master Warning:

Comes on

SAE Code: P3000

HINT:

The normal HV battery temperature is 60°C (140°F) or less.

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

  1. Connect the GTS to the DLC3.
  2. Turn the ignition switch to ON and turn the GTS on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  4. Turn the ignition switch off and wait for 2 minutes or more.
  5. Turn the ignition switch to ON and turn the GTS on.
  6. Drive the vehicle for approximately 10 minutes according to the freeze frame data items "Vehicle Speed", "Hybrid/EV Battery Temperature 1 to 6", "Hybrid/EV Battery Cooling Fan Intake Air Temperature 1", "Ambient Temperature" and "Hybrid/EV Battery Current".
  7. Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.
  8. 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.

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here

NOTICE:

  • After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.

    Click here

  • When disconnecting and reconnecting the auxiliary battery

    HINT:

    When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

    Click here

PROCEDURE

1.

CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)

(a) Check for DTCs.

Powertrain > HV Battery > Trouble Codes

Result

Proceed to

"P30004B" only is output, or DTCs except the ones in the table below are also output.

A

DTCs of hybrid battery system in the table below are output.

B

DTCs of hybrid control system in the table below are output.

C

System

Relevant DTC

Hybrid battery system

P060A47

Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure

P060B49

Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure

P060687

Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message

P0A8111

Hybrid/EV Battery Cooling Fan 1 Circuit Short to Ground

P0A8115

Hybrid/EV Battery Cooling Fan 1 Circuit Short to Auxiliary Battery or Open

P0A8196

Hybrid/EV Battery Cooling Fan 1 Component Internal Failure

P0A9B11

Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Ground

P0A9B15

Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Auxiliary Battery or Open

P0A9B1C

Hybrid/EV Battery Temperature Sensor "A" Voltage Out of Range

P0A9B2A

Hybrid/EV Battery Temperature Sensor "A" Signal Stuck In Range

P0AAC11

Hybrid/EV Battery Air Temperature Sensor "A" Circuit Short to Ground

P0AAC15

Hybrid/EV Battery Air Temperature Sensor "A" Circuit Short to Auxiliary Battery or Open

P0AC511

Hybrid/EV Battery Temperature Sensor "B" Circuit Short to Ground

P0AC515

Hybrid/EV Battery Temperature Sensor "B" Circuit Short to Auxiliary Battery or Open

P0AC51C

Hybrid/EV Battery Temperature Sensor "B" Voltage Out of Range

P0AC52A

Hybrid/EV Battery Temperature Sensor "B" Signal Stuck In Range

P0ACA11

Hybrid/EV Battery Temperature Sensor "C" Circuit Short to Ground

P0ACA15

Hybrid/EV Battery Temperature Sensor "C" Circuit Short to Auxiliary Battery or Open

P0ACA1C

Hybrid/EV Battery Temperature Sensor "C" Voltage Out of Range

P0ACA2A

Hybrid/EV Battery Temperature Sensor "C" Signal Stuck In Range

P0AE811

Hybrid/EV Battery Temperature Sensor "D" Circuit Short to Ground

P0AE815

Hybrid/EV Battery Temperature Sensor "D" Circuit Short to Auxiliary Battery or Open

P0AE81C

Hybrid/EV Battery Temperature Sensor "D" Voltage Out of Range

P0AE82A

Hybrid/EV Battery Temperature Sensor "D" Signal Stuck In Range

P0BC211

Hybrid/EV Battery Temperature Sensor "E" Circuit Short to Ground

P0BC215

Hybrid/EV Battery Temperature Sensor "E" Circuit Short to Auxiliary Battery or Open

P0BC21C

Hybrid/EV Battery Temperature Sensor "E" Voltage Out of Range

P0BC22A

Hybrid/EV Battery Temperature Sensor "E" Signal Stuck In Range

P0C3311

Hybrid/EV Battery Temperature Sensor "F" Circuit Short to Ground

P0C3315

Hybrid/EV Battery Temperature Sensor "F" Circuit Short to Auxiliary Battery or Open

P0C331C

Hybrid/EV Battery Temperature Sensor "F" Voltage Out of Range

P0C332A

Hybrid/EV Battery Temperature Sensor "F" Signal Stuck In Range

P306562

Hybrid/EV Battery Temperature Sensor "Group 1" Signal Compare Failure

P306A62

Hybrid/EV Battery Temperature Sensor "Group 2" Signal Compare Failure

Hybrid control system

P0A1F94

Hybrid/EV Battery Energy Control Module Unexpected Operation

(b) Turn the ignition switch off.

B

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

C

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

A

2.

REPLACE HYBRID VEHICLE CONTROL ECU

Click here

NEXT

REPLACE HV BATTERY

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