Toyota Sienna Service Manual: Operation flow
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 are working on before beginning troubleshooting.
- VEHICLE BROUGHT TO WORKSHOP
- CUSTOMER PROBLEM ANALYSIS
- Ask the customer about the conditions and environment when the problem occurred.
- INSPECT BATTERY VOLTAGE
Standard voltage: 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding.
- SYMPTOM CONFIRMATION AND DTC (AND FREEZE FRAME DATA) CHECK
(a) Visually check the wire harnesses, connectors and fuses for open and short circuits.
(b) Warm up the engine to the normal operating temperature.
(c) Confirm the problem symptoms and conditions, and check for DTCs
|Go to step 6|
- DTC CHART
- Check the results obtained in step 4. Then find the output DTC in the DTC chart. Look at the "Trouble Area" column for a list of potentially malfunctioning circuits and / or parts.
|Go to step 7|
- PROBLEM SYMPTOMS CHART
(a) Check the results obtained in step 4. Then find the problem symptoms in the problem symptoms table. Look at the "Suspected Area" column for a list of potentially malfunctioning circuits and / or parts.
- CIRCUIT INSPECTION OR PARTS INSPECTION
(a) Identify the malfunctioning circuit or part.
- ADJUST, REPAIR OR REPLACE
(a) Adjust, repair or replace the malfunctioning circuit or parts.
- CONFIRMATION TEST
(a) After the adjustment, repairs or replacement, confirm that the malfunction no longer exists. If the malfunction does not reoccur, perform a confirmation test under the same conditions and in the same environment as when the malfunction occurred the first time.
Customer problem analysisHINT: In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand w ...
NOTICE: Because the compressor operates at high voltages, wear electric insulated gloves and pull out the service plug to cut the high-voltage circuit before inspection. 1. DO NOT HANDLE REFRIGERANT IN AN ENCLOSED AREA OR NEAR AN OPEN FLAME 2. ALWAYS WEAR EYE PROTECTION 3. BE CAREFUL NOT ...
Reclining Motor Circuit
DESCRIPTION The fold seat control ECU receives a switch operation signal from the power rear no. 2 seat switch and the fold seat switch, and activates the reclining motor.