DTC P0DE8:00 [BECM (e-SKYACTIV)]

System malfunction location	High voltage battery cooling system: Diagnosis resistor error
Detection condition	• The BECM detects an error in the diagnosis resistor value (OLB bit) for the integrated circuit of the electric expansion valve drive 8 times in succession. Precondition • Lead-acid battery voltage: above 11 V
Fail-safe	• Refer to "DTC Table" and "Fail-safe Function Malfunction Contents Table". (See DTC TABLE [BECM (e-SKYACTIV)].)
Possible cause	• Main relay No.1 malfunction • Short to ground or open circuit in main relay No.1 power supply circuit • F10 10 A fuse malfunction • Lead-acid battery malfunction High voltage battery malfunction • Internal parts malfunction

System malfunction location

High voltage battery cooling system: Diagnosis resistor error

Detection condition

• The BECM detects an error in the diagnosis resistor value (OLB bit) for the integrated circuit of the electric expansion valve drive 8 times in succession.

Precondition

• Lead-acid battery voltage: above 11 V

Fail-safe

• Refer to "DTC Table" and "Fail-safe Function Malfunction Contents Table". (See DTC TABLE [BECM (e-SKYACTIV)].)

Possible cause

• Main relay No.1 malfunction

• Short to ground or open circuit in main relay No.1 power supply circuit

• F10 10 A fuse malfunction

• Lead-acid battery malfunction

High voltage battery malfunction

• Internal parts malfunction

<<High voltage>>

• If necessary measures such as wearing the correct protective gear are not taken when inspecting or removing/installing the high voltage parts, it could cause electrical shock and result in serious injury or, in the worst case, death.

• Before inspecting or removing/installing the high voltage parts, refer to [HIGH VOLTAGE SERVICE CAUTIONS] in the general information and [High Voltage Part Inspection and Removal/Installation Notes] of the high voltage system service cautions and implement the necessary measures and preparations. (See HIGH VOLTAGE SERVICE CAUTIONS.) (See HIGH VOLTAGE SYSTEM SERVICE CAUTIONS.)

Step	Inspection	Results	Action
1	RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION • Record the snapshot data. Note • Recording can be facilitated using the screen capture function of the PC.	—	Go to the next step.
2	INSPECT MAIN RELAY No.1 FOR MALFUNCTION • Inspect the applicable part. (See RELAY INSPECTION.) • Is the part normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification 1. (See RELAY LOCATION [(E)].)
3	INSPECT MAIN RELAY No.1 POWER SUPPLY CIRCUIT FOR SHORT TO GROUND AND OPEN CIRCUIT • Verify that the service plug is removed. • Inspect the power supply circuit for an open circuit and short to ground. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification 1.
4	INSPECT F10 10 A FUSE • Verify that the service plug is removed. • Remove the F10 10 A fuse. • Inspect the F10 10 A fuse. • Is the fuse normal?	Yes	Reinstall the F10 10 A fuse, then go to the next step.
No	Replace the F10 10 A fuse and perform the repair completion verification 1.
5	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.) (See LEAD-ACID BATTERY REMOVAL/INSTALLATION.)
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.) • Access the BECM simulation item [HV_BATT_EEV_COMD] using the M-MDS. (See SIMULATION INSPECTION.) • Changes the opening angle of the battery cooling refrigerant valve. • 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. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [L.H.D. (E)].) (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [R.H.D.].) 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. (See HIGH VOLTAGE BATTERY REMOVAL/INSTALLATION.)
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.

Step

Inspection

Results

Action

RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION

• Record the snapshot data.

Note

• Recording can be facilitated using the screen capture function of the PC.

—

Go to the next step.

INSPECT MAIN RELAY No.1 FOR MALFUNCTION

• Inspect the applicable part.

(See RELAY INSPECTION.)

• Is the part normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification 1.

(See RELAY LOCATION [(E)].)

INSPECT MAIN RELAY No.1 POWER SUPPLY CIRCUIT FOR SHORT TO GROUND AND OPEN CIRCUIT

• Verify that the service plug is removed.

• Inspect the power supply circuit for an open circuit and short to ground.

(See CIRCUIT INSPECTION.)

• Is the circuit normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification 1.

INSPECT F10 10 A FUSE

• Verify that the service plug is removed.

• Remove the F10 10 A fuse.

• Inspect the F10 10 A fuse.

• Is the fuse normal?

Yes

Reinstall the F10 10 A fuse, then go to the next step.

Replace the F10 10 A fuse and perform the repair completion verification 1.

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.

Recharge or replace the lead-acid battery and perform the repair completion verification 1.

(See LEAD-ACID BATTERY RECHARGING.)

(See LEAD-ACID BATTERY REMOVAL/INSTALLATION.)

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.)

• Access the BECM simulation item [HV_BATT_EEV_COMD] using the M-MDS.

(See SIMULATION INSPECTION.)

• Changes the opening angle of the battery cooling refrigerant valve.

• 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.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [L.H.D. (E)].)

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [R.H.D.].)

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.

(See HIGH VOLTAGE BATTERY REMOVAL/INSTALLATION.)

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.

DTC troubleshooting completed.