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Home >> Lexus >> 2020 >> ES 300h Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 224 (Engine Control System (2GR-FKS) - Diagnostic Codes (07 Of 10)) >> SFI System >> DTC P0615-12: Starter Relay Circuit Short to Battery [06/2018 - 08/2021] >> Monitor Description

Monitor Description

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While the engine is being cranked, positive battery voltage is applied to terminal STA of the ECM. If the ECM detects the starter control (STA) signal while the vehicle is being driven, it determines that there is a malfunction in the STA circuit. The ECM then illuminates the MIL and stores the DTC.

This monitor runs when the vehicle is driven at 20 km/h (12.43 mph) or more for 20 seconds or more.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P0615-12 Starter Relay Circuit Short to Battery All of the following conditions are met, and battery voltage of 10.5 V or higher is applied to the ECM for 20 seconds (1 trip detection logic):
  1. (a) The vehicle speed is 20 km/h (12.43 mph) or more.
  2. (b) The engine speed is 1000 rpm or higher.
  3. (c) The STA signal is on.
  • ST relay
  • Park/neutral position switch assembly
  • Starter relay (ST) circuit
  • ECM
Comes on DTC stored SAE Code: P0617