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Home >> Toyota >> 2018 >> Prius Four >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (Nickel Metal Hydride) - Diagnostic Codes (6 Of 8) >> HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY) >> DTC P2530-12: IG2 Signal Circuit Short to Auxiliary Battery [11/2015 -] >> Description

DTC P2530-12: IG2 Signal Circuit Short to Auxiliary Battery [11/2015 -]: Description

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 power 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 control status signal sent from the certification ECU (smart key ECU assembly) do not match.
(1 trip detection logic)
  • Auxiliary battery
  • Certification ECU (smart key ECU assembly)
  • Hybrid vehicle control ECU
  • ECM
  • NO. 1 integration relay
  • Wire harness or connector
Does not come on Master Warning Light:
Comes on