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DTC P2507-00: ECM / PCM Power Input Signal Low [08/2018 - ]: Contents

DTC No.	Detection Item	DTC Detection Condition	Warning Indicate	Memory	Fail-safe Operation	Note
P250700	ECM / PCM Power Input Signal Low	ECM battery voltage low input	Check engine light: ON Master warning light: OFF Charging system warning light: OFF Engine oil warning light: OFF Wrench warning indicator light: OFF	DTC stored	Not applicable	Drive cycle: 1 Monitor item: CCM Self test type: CMDTC self test, KOEO self test, KOER self test

200 PIN TYPE

DTC DETECTION CONDITION	ECM battery voltage low input
DTC DETECTION CONDITION	The ECM monitors the voltage of backup battery positive terminal. If the ECM detects that the battery positive terminal voltage is below 6 V for 5 s, the ECM determines that the backup voltage circuit has a malfunction. Diagnostic support note This is a continuous monitor (CCM). The check engine light illuminates if the ECM detects the above malfunction condition during the first drive cycle. FREEZE FRAME DATA (Mode 02)/Snapshot data is available. DTC is stored in the ECM memory.
FAIL-SAFE OPERATION	Not applicable
TROUBLE AREA	Battery malfunction Short to ground or open circuit in backup voltage circuit Short to ground in wiring harness between MAIN 200 A fuse and ECM terminal A42-4 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 ECM terminal A42-4 ECM connector or terminals malfunction ECM malfunction

186 PIN TYPE

DTC DETECTION CONDITION	ECM battery voltage low input
DTC DETECTION CONDITION	The ECM monitors the voltage of backup battery positive terminal. If the ECM detects that the battery positive terminal voltage is below 6 V for 5 s, the ECM determines that the backup voltage circuit has a malfunction. Diagnostic support note This is a continuous monitor (CCM). The check engine light illuminates if the ECM detects the above malfunction condition during the first drive cycle. FREEZE FRAME DATA/Snapshot data is available. DTC is stored in the ECM memory.
FAIL-SAFE OPERATION	Not applicable
TROUBLE AREA	Battery malfunction Short to ground or open circuit in backup voltage circuit Short to ground in wiring harness between MAIN 200 A fuse and ECM terminal A43-1 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 ECM terminal A43-1 ECM connector or terminals malfunction ECM malfunction

NOTE:

186 Pin Type
Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.

RELATED PIDS (186 PIN TYPE)

Item (definition)	Unit/Condition	Definition	Condition/Specification (Reference)
Module supply voltage	V	Battery positive voltage	Displays battery voltage