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Home >> Lexus >> 2006 >> GX 470 >> Repair and Diagnosis >> Engine Performance >> System >> SFI System - Diagnostics >> DTC P1613 Secondary Air Injection System Driver >> Circuit Description

Circuit Description

Refer to DTC P0412 in CIRCUIT DESCRIPTION  .

SECONDARY AIR INJECTION SYSTEM DRIVER

DTC No. DTC Detection Condition Trouble Area
P1613 Either of following condition (a) or (b) is met:
  1. All of following conditions are met (1 trip detection logic):
    • While either of air pump or air switching valve does not operate.
    • Air injection driver outputs normal signal (80% duty signal)
  2. All of following conditions are met (1 trip detection logic):
    • Air injection driver outputs abnormal duty signal (duty signal excluding 0, 20, 40, 60, 80, 100%)
  • Air injection driver (AID)
  • Open in air injection driver ground circuit
P1613 All of following conditions are met (1 trip detection logic):
  1. While air injection system operating (Air pump ON and all ASV ON)
  2. Air injection driver outputs air pump malfunction signal (0% duty signal)
  • Short in diagnostic information signal circuit (AID - ECM)
  • Open or short in air pump and air switching valve command signal circuit (AID - ECM)
  • Air injection driver (AID)
  • Open in air injection driver ground circuit
  • ECM
P1613 Air injection driver outputs abnormal duty signal (100% duty signal) (1 trip detection logic)
  • Open or short in AID power source circuit
  • Open in diagnostic information signal circuit (AID - ECM)
  • Air injection driver (AID)
  • ECM