Toyota RAV4 manuals

Toyota Sienna Service Manual: Fuel Pump Primary Circuit

Fuel Pump Primary Circuit

DESCRIPTION

Fuel Pump Primary Circuit

WIRING DIAGRAM

WIRING DIAGRAM

This troubleshooting procedure is based on the premise that the engine is started. If the engine is not started, proceed to the problem symptoms table (See page ES-27).

INSPECTION PROCEDURE

1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER

(a) Connect the intelligent tester to the DLC3.

(b) Turn the ignition switch to the ON position and turn the intelligent tester ON.

(c) Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / FUEL PUMP SP CTL.

(d) Check the operation of the relay while operating it using the intelligent tester.

OK: Operating noise can be heard from the relay.

2 INSPECT RELAY (FUEL PUMP RELAY)

INSPECT RELAY (FUEL PUMP RELAY)

(a) Remove the FUEL PUMP relay from the engine room junction block.

(b) Measure the resistance according to the value(s) in the table below.

Standard resistance

(c) Reinstall the FUEL PUMP relay.

3 CHECK HARNESS AND CONNECTOR (FUEL PUMP RELAY - ECM)

CHECK HARNESS AND CONNECTOR (FUEL PUMP RELAY - ECM)

(a) Remove the FUEL PUMP relay from the engine room junction block.

(b) Disconnect the E11 ECM connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard resistance

(d) Reconnect the ECM connector.

(e) Reinstall the FUEL PUMP relay

REPLACE ECM (See page ES-498)

System Too
DESCRIPTION The fuel trim is related to the feedback compensation value, not to the basic injection time. The fuel trim consists of both the short-term and long-term fuel trims. The short-ter ...

Random / Multiple Cylinder Misfire Detected
DESCRIPTION When the engine misfires, high concentrations of hydrocarbons (HC) enter the exhaust gas. High HC concentration levels can cause increase in exhaust emission levels. Extremely ...

Other materials:

Disassembly
1. REMOVE PARKING BRAKE PEDAL BRACKET PROTECTOR (a) Using a flat-head screwdriver, disengage the 2 claws on the parking brake pedal bracket protector. (b) Turning the parking brake pedal bracket protector clockwise, remove the parking brake pedal bracket protector from the parking brake ...

Problem symptoms table
SLIDE DOOR CLOSER SYSTEM Symptom Suspected Area Slide door closer LH does not operate (*1) ECU-B fuse Power slide door lock assembly LH Power slide door ECU LH Wire harness Slide door closer RH does not operate ECU-B ...

Removal
1. DRAIN BRAKE FLUID NOTICE: Wash brake fluid off immediately if it adheres to any painted surface. 2. DISCONNECT BATTERY NEGATIVE TERMINAL 3. REMOVE AIR CLEANER ASSEMBLY WITH HOSE 4. REMOVE BRAKE ACTUATOR WITH BRACKET (a) Release the latch of the brake actuator connector to disconnect t ...

© 2011-2025 Copyright www.tsienna.net