Toyota RAV4 manuals

Toyota Sienna Service Manual: Fuel Pump Primary Circuit

DTC P0230 Fuel Pump Primary Circuit

DESCRIPTION

DTC No.

DTC Detection Condition

Trouble Area

P0230

Open or short in FUEL PUMP relay circuit (1 trip detection logic)
  • Open or short in FUEL PUMP relay circuit
  • FUEL PUMP relay
  • ECM

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.

INSPECTION PROCEDURE

1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.
  2. Turn the ignition switch to the ON position and turn the intelligent tester ON.
  3.  Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / FUEL PUMP SP CTL.
  4.  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)

  1. Remove the FUEL PUMP relay from the engine room junction block.
  2.  Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

  1. Reinstall the FUEL PUMP relay.

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

CHECK HARNESS AND CONNECTOR (FUEL PUMP RELAY - ECM)

  1. Remove the FUEL PUMP relay from the engine room junction block.
  2.  Disconnect the E11 ECM connector.
  3.  Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

  1. Reconnect the ECM connector.
  2.  Reinstall the FUEL PUMP relay

REPLACE ECM

System Too Lean/ System Too Rich
DTC P0171 System Too Lean (Bank 1) DTC P0172 System Too Rich (Bank 1) DTC P0174 System Too Lean (Bank 2) DTC P0175 System Too Rich (Bank 2) DESCRIPTION The fuel trim is related to the feedback co ...

Random / Multiple Cylinder Misfire Detected/ Cylinder  Misfire Detected
DTC P0300 Random / Multiple Cylinder Misfire Detected DTC P0301 Cylinder 1 Misfire Detected DTC P0302 Cylinder 2 Misfire Detected DTC P0303 Cylinder 3 Misfire Detected DTC P0304 Cylinder 4 Misfire ...

Other materials:

Brake fluid
Checking fluid level The brake fluid level should be between the “MAX” and “MIN” lines on the tank. “MAX” line “MIN” line Adding fluid Lift the cover off. Make sure to check the fluid type and prepare the necessary item. Brake fluid can absorb moisture from t ...

Check for intermittent problems
1. CHECK FOR INTERMITTENT PROBLEMS HINT: For use of the intelligent tester only: Inspect the vehicle's ECM using check mode. Intermittent problems are easier to detect with an intelligent tester when the ECM is in check mode. In check mode, the ECM uses 1 trip detection logic, which is more ...

Data list / active test
1. DATA LIST HINT: Using the intelligent tester's DATA LIST allows the status of a switch, sensor, actuator and other items to be read without removing any parts. Reading the DATA LIST early in troubleshooting is one way to save time.  Connect the intelligent tester (with CAN VIM) to t ...

© 2011-2019 Copyright www.tsienna.net