DTC P2530-12: IG2 Signal Circuit Short to Auxiliary Battery [11/2023 - ]: Description
WARNING: This page is about a different car, the 2025 Toyota Highlander and 2024 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
The hybrid vehicle control ECU compares the IG2 signal to the IG control status signal sent from the certification ECU (smart key ECU assembly) to detect a stuck on malfunction of the IG2 signal.
HINT:
If DTC P2530-12 is stored, the ignition switch will turn off (READY off).
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
|---|---|---|---|---|---|
| P2530-12 | IG2 Signal Circuit Short to Auxiliary Battery | The IG2 signal of the hybrid vehicle control ECU and the IG switch signal sent from the certification ECU (smart key ECU assembly) do not match. (1 trip detection logic) |
|
Does not come on | Master Warning: Comes on |