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Home >> Lexus >> 2008 >> LX 570 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTC P0455 - P0657 >> DTC P0617 Starter Relay Circuit High >> Description
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DTC P0617 Starter Relay Circuit High: Description

While the engine is being cranked, the 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 (12.4 mph) for over 20 seconds.

DTC DETECTION CONDITION CHART

DTC Code DTC Detection Condition Trouble Area
P0617 When conditions (a), (b) and (c) are met, and a positive (+B) battery voltage of 10.5 V or higher is applied to the ECM for 20 seconds (1 trip detection logic).
  1. The vehicle speed is 20 km/h (12.4 mph) or more.
  2. The engine speed is 1,000 rpm or more.
  3. The STA signal is ON.
  • Park/Neutral Position (PNP) switch
  • Starter relay circuit
  • Engine switch
  • ECM