Honda CRX silhouetteCRX

Fuel Supply System — Fuel Pump Replacement / Main Relay: Relay Testing

6-79prose procedure

Fuel Pump — Replacement

  1. 1
    Remove the fuel tank (page 6-81).
  2. 2
    Remove the fuel pump mounting nuts.
    Exploded view of the fuel pump assembly removed from the fuel tank, showing the fuel pump, fuel pump bracket and fuel filter, with the mounting nut torque callout.
  3. 3
    Remove the fuel pump from the fuel tank.
Fuel pump mounting nut
6N·m

Main Relay

Relay Testing

  1. 1
    Remove the main relay.
  2. 2
    Attach the battery positive terminal to the No. 4 terminal and the battery negative terminal to the No. 8 terminal of the main relay. Then check for continuity between the No. 5 terminal and No. 7 terminal of the main relay.
    Main relay terminal identification and internal schematic. Top shows terminal positions No.1–No.8 on the relay body; bottom shows the internal coil/contact schematic with terminal functions.
  3. 3
    Attach the battery positive terminal to the No. 5 terminal and the battery negative terminal to the No. 2 terminal of the main relay. Then check that there is continuity between the No. 1 terminal and No. 3 terminal of the main relay.
  4. 4
    Attach the battery positive terminal to the No. 3 terminal and battery negative terminal to the No. 8 terminal of the main relay. Then check that there is continuity between the No. 5 terminal and No. 7 terminal of the main relay.
No. 5
Connects toTO IGN. 1
No. 1
Connects toTO BAT ⊕
No. 2
Connects toTO GROUND
No. 3
Connects toTO ECU (A 13, 15)
No. 4
Connects toTO ST. SWITCH
No. 8
Connects toTO ECU (A12, 14)
No. 7
Connects toTO FUEL PUMP

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