RX 350 FWD V6-3.5L (2GR-FE) (2010)
4. CHECK AND REPLACE ECU
NOTICE:
*
The connector should not be disconnected from the ECU. Perform the inspection from the backside of the connector on the wire
harness side.
*
When no measuring condition is specified, perform the inspection with the engine stopped and the engine switch on (IG).
*
Check that the connectors are fully seated. Check for loose, corroded or broken wires.
(a) First, check the ECU ground circuit. If it is faulty, repair it. If it is normal, the ECU could be faulty. Temporarily replace the ECU with a
normally functioning one and check if the symptoms occur. If the trouble symptoms disappear, replace the original ECU.
(1) Measure the resistance between the ECU ground terminal and body ground.
Text in Illustration
Standard resistance:
Below 1 Ohms
(2) Disconnect the ECU connector. Check the ground terminals on the ECU side and wire harness side for bent terminals, corrosion or foreign
matter. Lastly, check the contact pressure of the female terminals.
Text in Illustration
Up to 08/2009
INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING
1. OPERATION FLOW
HINT
Perform troubleshooting in accordance with the procedure below. The following is an outline of basic troubleshooting procedure.
Confirm the troubleshooting procedure for the circuit you are working on before beginning troubleshooting.
1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.
2. CUSTOMER PROBLEM ANALYSIS