Toyota Sienna Service Manual: How to proceed with troubleshooting

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 s ...

Operation flow

HINT: Perform troubleshooting in accordance with the procedures below. The following is an outline of basic troubleshooting procedures. Confirm the troubleshooting procedures for the circuit you a ...

Other materials:

Inspection
1. INSPECT BRAKE DISC INSIDE DIAMETER (a) Using a brake drum gauge or equivalent, measure the inside diameter of the disc. Standard inside diameter: 190 mm (7.480 in.) Maximum inside diameter: 191 mm (7.520 in.) 2. INSPECT PARKING BRAKE SHOE LINING THICKNESS (a) Using a ruler, measur ...

DTC check / clear
1. DTC CHECK/CLEAR (USING INTELLIGENT TESTER:)  DTC check  Connect the intelligent tester to the DLC3. Turn the ignition switch to the ON position.  Read the DTCs on the tester screen.  DTC clear  Connect the intelligent tester to the DLC3. &n ...

Tire Pressure Warning Light Circuit
DESCRIPTION If the ECU detects trouble, the tire pressure warning light blinks (comes on after blinking for 1 minute) and tire pressure monitor is cancelled at the same time. At this time, the ECU records a DTC in the memory. Connect terminals TC and CG of DLC3 to make the tire pressure war ...