DTC P2507:00 [SKYACTIV-D 1.5]

DTC P2507:00	PCM battery voltage low input
DETECTION CONDITION	• When the following conditions are met, a condition in which the backup power voltage is less than 50% of the battery voltage continues for 10 s. MONITORING CONDITIONS ― Battery voltage: 10—16 V ― 0.5 s have elapsed after the ignition was switched ON (engine off or on) Diagnostic support note • This is a continuous monitor (CCM). • The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. • FREEZE FRAME DATA/Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	• Inhibits engine-stop by operating the i-stop function.
POSSIBLE CAUSE	• Battery malfunction • Short to ground or open circuit in backup voltage circuit (without i-ELOOP) ― Short to ground in wiring harness between MAIN 200 A fuse and PCM terminal 2O ― MAIN 200 A fuse and/or ROOM 25 A fuse and/or ENG+B 7.5 A fuse malfunction ― Open circuit in wiring harness between battery positive terminal and PCM terminal 2O • Short to ground or open circuit in backup voltage circuit (with i-ELOOP) ― Short to ground in wiring harness between DC-DC converter (i-ELOOP) terminal 4A and PCM terminal 2O ― ROOM 25 A fuse and/or ENG+B 7.5 A fuse malfunction ― Open circuit in wiring harness between DC-DC converter (i-ELOOP) terminal 4A and PCM terminal 2O • PCM connector or terminals malfunction • PCM malfunction

DTC P2507:00

PCM battery voltage low input

DETECTION CONDITION

• When the following conditions are met, a condition in which the backup power voltage is less than 50% of the battery voltage continues for 10 s.

MONITORING CONDITIONS

― Battery voltage: 10—16 V

― 0.5 s have elapsed after the ignition was switched ON (engine off or on)

Diagnostic support note

• This is a continuous monitor (CCM).

• The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle.

• FREEZE FRAME DATA/Snapshot data is available.

• DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

• Inhibits engine-stop by operating the i-stop function.

POSSIBLE CAUSE

• Battery malfunction

• Short to ground or open circuit in backup voltage circuit (without i-ELOOP)

― Short to ground in wiring harness between MAIN 200 A fuse and PCM terminal 2O

― MAIN 200 A fuse and/or ROOM 25 A fuse and/or ENG+B 7.5 A fuse malfunction

― Open circuit in wiring harness between battery positive terminal and PCM terminal 2O

• Short to ground or open circuit in backup voltage circuit (with i-ELOOP)

― Short to ground in wiring harness between DC-DC converter (i-ELOOP) terminal 4A and PCM terminal 2O

― ROOM 25 A fuse and/or ENG+B 7.5 A fuse malfunction

― Open circuit in wiring harness between DC-DC converter (i-ELOOP) terminal 4A and PCM terminal 2O

• PCM connector or terminals malfunction

• PCM malfunction

STEP	INSPECTION	ACTION
1	RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION Note • Recording can be facilitated using the screen capture function of the PC. • Record the FREEZE FRAME DATA/snapshot data on the repair order.	—	Go to the next step.
2	VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available?	Yes	Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
No	Go to the next step.
3	INSPECT BATTERY • Switch the ignition off. • Inspect the battery. (See BATTERY INSPECTION.) • Is there any malfunction?	Yes	Recharge or replace the battery, then go to Step 7. (See BATTERY RECHARGING.) (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-D 1.5].)
No	Vehicles with i-ELOOP: • Go to Step 5. Vehicles without i-ELOOP: • Go to the next step.
4	INSPECT BACKUP VOLTAGE CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT • Reconnect all disconnected connectors. • Access the VPWR PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-D 1.5].) • Verify the VPWR PID value. • Is the VPWR PID value B+?	Yes	Go to Step 6.
No	Inspect the MAIN 200 A fuse, ROOM 25 A fuse and ENG+B 7.5 A fuse. • If the fuse is blown: ― Refer to the wiring diagram and verify whether or not there is a common connector between MAIN 200 A fuse and PCM terminal 2O. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. • Replace the malfunctioning fuse. • If the fuse is damaged: ― Replace the malfunctioning fuse. • If all fuses are normal: ― Refer to the wiring diagram and verify whether or not there is a common connector between battery positive terminal and PCM terminal 2O. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit. Go to Step 7.
5	INSPECT BACKUP VOLTAGE CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT • Reconnect all disconnected connectors. • Access the VPWR PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-D 1.5].) • Verify the VPWR PID value. • Is the VPWR PID value B+?	Yes	Go to the next step.
No	Remove the service plug. (See SERVICE PLUG DISCONNECTION/CONNECTION [i-ELOOP].) Inspect the ROOM 25 A fuse and ENG+B 7.5 A fuse. • If the fuse is blown: ― Refer to the wiring diagram and verify whether or not there is a common connector between ROOM 25 A fuse and PCM terminal 2O. If there is a common connector: • Determine the malfunctioning location by inspecting the common connector and terminals for corrosion, damage, or disconnection and by inspecting the DC-DC converter (i-ELOOP) terminal 4A-related wiring harness for short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which is shorted to ground, or the DC-DC converter (i-ELOOP) terminal 4A-related wiring harness. • Replace the malfunctioning fuse. • If the fuse is damaged: ― Replace the malfunctioning fuse. • If all fuses are normal: ― Refer to the wiring diagram and verify whether or not there is a common connector between DC-DC converter (i-ELOOP) terminal 4A and PCM terminal 2O. If there is a common connector: • Determine the malfunctioning location by inspecting the common connector and terminals for corrosion, damage, or disconnection and by inspecting the DC-DC converter (i-ELOOP) terminal 4A-related wiring harness for an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit, or the DC-DC converter (i-ELOOP) terminal 4A-related wiring harness. Reinstall the service plug. (See SERVICE PLUG DISCONNECTION/CONNECTION [i-ELOOP].) Go to Step 7.
6	INSPECT PCM CONNECTOR CONDITION • Switch the ignition off. • Disconnect the PCM connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to the next step.
No	Go to the next step.
7	VERIFY DTC TROUBLESHOOTING COMPLETED • Always reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [SKYACTIV-D 1.5].) • Perform the DTC Reading Procedure. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-D 1.5].) • Is the same DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 1.5].) Go to the next step.
No	Go to the next step.
8	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [SKYACTIV-D 1.5].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-D 1.5].)
No	DTC troubleshooting completed.

STEP

INSPECTION

ACTION

RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION

Note

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

• Record the FREEZE FRAME DATA/snapshot data on the repair order.

—

Go to the next step.

VERIFY RELATED SERVICE INFORMATION AVAILABILITY

• Verify related Service Information availability.

• Is any related Service Information available?

Yes

Perform repair or diagnosis according to the available Service Information.

• If the vehicle is not repaired, go to the next step.

Go to the next step.

INSPECT BATTERY

• Switch the ignition off.

• Inspect the battery.

(See BATTERY INSPECTION.)

• Is there any malfunction?

Yes

Recharge or replace the battery, then go to Step 7.

(See BATTERY RECHARGING.)

(See BATTERY REMOVAL/INSTALLATION [SKYACTIV-D 1.5].)

Vehicles with i-ELOOP:

• Go to Step 5.

Vehicles without i-ELOOP:

• Go to the next step.

INSPECT BACKUP VOLTAGE CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT

• Reconnect all disconnected connectors.

• Access the VPWR PID using the M-MDS.

(See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-D 1.5].)

• Verify the VPWR PID value.

• Is the VPWR PID value B+?

Yes

Go to Step 6.

Inspect the MAIN 200 A fuse, ROOM 25 A fuse and ENG+B 7.5 A fuse.

• If the fuse is blown:

― Refer to the wiring diagram and verify whether or not there is a common connector between MAIN 200 A fuse and PCM terminal 2O.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short to ground.

• Replace the malfunctioning fuse.

• If the fuse is damaged:

― Replace the malfunctioning fuse.

• If all fuses are normal:

― Refer to the wiring diagram and verify whether or not there is a common connector between battery positive terminal and PCM terminal 2O.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has an open circuit.

Go to Step 7.

INSPECT BACKUP VOLTAGE CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT

• Reconnect all disconnected connectors.

• Access the VPWR PID using the M-MDS.

(See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-D 1.5].)

• Verify the VPWR PID value.

• Is the VPWR PID value B+?

Yes

Go to the next step.

Remove the service plug.

(See SERVICE PLUG DISCONNECTION/CONNECTION [i-ELOOP].)

Inspect the ROOM 25 A fuse and ENG+B 7.5 A fuse.

• If the fuse is blown:

― Refer to the wiring diagram and verify whether or not there is a common connector between ROOM 25 A fuse and PCM terminal 2O.

If there is a common connector:

• Determine the malfunctioning location by inspecting the common connector and terminals for corrosion, damage, or disconnection and by inspecting the DC-DC converter (i-ELOOP) terminal 4A-related wiring harness for short to ground.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which is shorted to ground, or the DC-DC converter (i-ELOOP) terminal 4A-related wiring harness.

• Replace the malfunctioning fuse.

• If the fuse is damaged:

― Replace the malfunctioning fuse.

• If all fuses are normal:

― Refer to the wiring diagram and verify whether or not there is a common connector between DC-DC converter (i-ELOOP) terminal 4A and PCM terminal 2O.

If there is a common connector:

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has an open circuit, or the DC-DC converter (i-ELOOP) terminal 4A-related wiring harness.

Reinstall the service plug.

(See SERVICE PLUG DISCONNECTION/CONNECTION [i-ELOOP].)

Go to Step 7.

INSPECT PCM CONNECTOR CONDITION

• Switch the ignition off.

• Disconnect the PCM connector.

• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).

• Is there any malfunction?