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

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