Replace Circuit Opening Relay

EZ Battery Reconditioning Method

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INSPECT ECM (FC VOLTAGE)

ECM Connector

G100798E07

(a) Turn the ignition switch ON.

(b) Measure the voltage between the terminals of the E8 and E6 ECM connectors.

Standard Voltage

Tester Connections

Specified Conditions

FC (E8-10) - E1 (E6-1)

REPLACE ECM

REPLACE ECM

CHECK AND REPLACE HARNESS AND CONNECTOR (ECM - CIRCUIT OPENING RELAY -IGNITION)

INSPECT ECM POWER SOURCE CIRCUIT

REPAIR OR REPLACE HARNESS OR CONNECTOR

INSPECT FUEL PUMP RELAY ASSEMBLY

(a) Remove the fuel pump relay from the engine room R/B.

(b) Check the fuel pump relay resistance. Standard Resistance

Tester Connections

Specified Conditions

3 - 4

Below 1 Q

3 - 5

10 kQ or higher

3 - 4

10 kQ or higher (when battery voltage applied to terminals 1 and 2)

(when battery voltage applied to terminals 1 and 2)

(c) Reinstall the fuel pump relay.

REPLACE FUEL PUMP RELAY ASSEMBLY

INSPECT FUEL PUMP ASSEMBLY

Circuit Open Relay Corolla E11

(a) Inspect the fuel pump resistance.

(1) Measure the resistance between terminals 4 and 5.

(b) Inspect the fuel pump operation.

(1) Apply battery voltage to both terminals. Check that the pump operates.

NOTICE:

• These tests must be done quickly (within 10 seconds) to prevent the coil from burning out.

• Keep the fuel pump as far away from the battery as possible.

• Always do the switching at the battery side.

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REPLACE FUEL PUMP ASSEMBLY

CHECK HARNESS AND CONNECTOR (FUEL PUMP - FUEL PUMP RELAY, FUEL PUMP -BODY GROUND)

Wire Harness Side:

Circuit Open Relay Corolla E11

Fuel Pump Connector

(a) Check the harness and connector between the fuel pump and fuel pump relay.

(1) Disconnect the F19 fuel pump connector.

(2) Remove the fuel pump relay from the engine room R/B.

(3) Check the resistance.

Standard Resistance (Check for open)

Fuel Pump Connector

Engine Room R/B:

mi pGGO

3

5

I 11 4 2|

(4) Reconnect the fuel pump connector.

(5) Reinstall the fuel pump relay.

(b) Check the harness and connector between the fuel pump and body ground.

(1) Disconnect the fuel pump connector.

(2) Check the resistance.

Standard Resistance (Check for open)

(3) Reconnect the fuel pump connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

Tester Connections

Specified Conditions

Fuel pump (F19-4) - Fuel pump relay (4)

Below 1 Q

Standard Resistance (Check for short)

Tester Connections

Specified Conditions

Fuel pump (F19-4) or Fuel pump relay (4) - Body ground

10 kQ or higher

Tester Connections

Specified Conditions

Fuel pump (F19-5) - Body ground

Below 1 Q

CHECK HARNESS AND CONNECTOR (CIRCUIT OPENING RELAY - FUEL PUMP RELAY)

Engine Room R/B:

Circuit Opening Relay

Engine Room R/B:

oGCO

Fuel Pump Relay

Engine Room R/B:

Tacoma Open Relays Wiring

Circuit Opening Relay

3

5

1 1 1 1 4 1 21

(a) Remove the circuit opening relay from the engine room R/B.

(b) Remove the fuel pump relay from the engine room R/B.

(c) Check the resistance.

Standard Resistance (Check for open)

Tester Connections

Specified Conditions

Circuit opening relay (3) - Fuel pump relay (3)

Below 1 Q

Standard Resistance (Check for short)

Tester Connections

Specified Conditions

Circuit opening relay (3) or Fuel pump relay (3) -Body ground

10 kQ or higher

(d) Reinstall the circuit opening relay.

(e) Reinstall the fuel pump relay.

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPAIR OR REPLACE HARNESS OR CONNECTOR

CHECK AND REPAIR HARNESS AND CONNECTOR (EFI RELAY - CIRCUIT OPENING RELAY)

INSPECT FUEL PUMP RELAY ASSEMBLY

3

5

2

4

1

V

(a) Remove the fuel pump relay from the engine room R/B.

(b) Check the fuel pump relay resistance. Standard Resistance

Tester Connections

Specified Conditions

3 - 4

Below 1 Q

3 - 5

10 kQ or higher

3 - 4

10 kQ or higher (when battery voltage applied to terminals 1 and 2)

(when battery voltage applied to terminals 1 and 2)

(c) Reinstall the fuel pump relay.

REPLACE FUEL PUMP RELAY ASSEMBLY

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DIY Battery Repair

DIY Battery Repair

You can now recondition your old batteries at home and bring them back to 100 percent of their working condition. This guide will enable you to revive All NiCd batteries regardless of brand and battery volt. It will give you the required information on how to re-energize and revive your NiCd batteries through the RVD process, charging method and charging guidelines.

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Responses

  • timo
    What does the circuit opening relay do on toyota tacoma?
    3 years ago
  • tyko
    How to remove tacoma fuel pump connector?
    3 years ago
  • yvonne faber
    Can the open circuit relay on a corolla be replaced?
    3 years ago
  • Azzeza
    What does an circuit opening relay do on 1997 toyota tacoma?
    2 years ago
  • fedra
    How to disconnect relay integration tacoma?
    11 months ago
  • berhane
    What is a circuit opening relay for a 02 toyota highlander?
    3 months ago
  • giulia ferri
    Where is 2002 toyota tacoma open circuit relay?
    3 months ago
  • Sancho
    What is the resistance of a toyota circuit opening relay?
    22 days ago

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