Inspection Procedure
WARNING: This page is about a different car, the 2006 Lexus IS 350 and 2006 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK WIRE HARNESS (+B1, +B, E)
- Turn the engine switch off.
- Disconnect the ECM connectors (E4) and (A5).
- Measure the resistance according to the value(s) in WIRE HARNESS (+B1, +B, E) (RESISTANCE)
.
Standard resistance
WIRE HARNESS (+B1, +B, E) (RESISTANCE)Tester Connection Condition Specified Value E4-7 (E1) - Body ground Always Below 1 ohms - Measure the voltage according to the value(s) in WIRE HARNESS (+B1, +B, E) (VOLTAGE) .
Standard voltage
WIRE HARNESS (+B1, +B, E) (VOLTAGE)Tester Connection Condition Specified Value A5-5 (+B1) - Body ground Engine switch off 10 to 14 V A5-6 (+B) - Body ground Engine switch off 10 to 14 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: REPLACE ECM