Inspection Procedure
WARNING: This page is about a different car, the 2005 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT STEERING PAD SWITCH ASSY
- Remove the steering pad switch assy.
- Check the continuity between terminal 2 (DIST) and 4 (ECC) of steering pad switch assy connector when distance control switch is operated.
Standard:
TERMINAL 2 (DIST) AND 4 (ECC) OF STEERING PAD SWITCH ASSY CONNECTORSwitch position Specified condition Distance control switch is ON Below 1 Ω Distance control switch is OFF 10 kΩ or higher HINT:
When a malfunction is found on the distance control switch, replace the steering pad switch assy.
- NG: REPLACE STEERING PAD SWITCH ASSY
- OK: Go to next step
- CHECK WIRE HARNESS AND CONNECTOR (DISTANCE CONTROL ECU - STEERING PAD SWITCH ASSY)
- Check for an open or short circuit in harness and connector between the distance control ECU and the steering pad switch assy (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).
- NG: REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR
- OK: Go to next step
- CHECK WIRE HARNESS AND CONNECTOR (STEERING PAD SWITCH ASSY - BODY GROUND)
- Check for an open or short circuit in harness and connector between the steering pad switch assy and body ground (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).
- NG: REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR
- OK: Go to next step
- INSPECT DISTANCE CONTROL ECU ASSY
- Remove the distance control ECU with connector.
- Ignition switch ON.
- Measure the voltage between terminal MODE (D2-16) of the distance control ECU and body ground, when distance control switch is operated.
Standard:
TERMINAL MODE (D2-16) OF DISTANCE CONTROL ECU AND BODY GROUNDSwitch position Voltage Distance control switch is ON Below 1 V Distance control switch is OFF 10 to 14 V - NG: REPLACE DISTANCE CONTROL ECU ASSY (see DISTANCE CONTROL ECU ASSY )
- OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )