Main Relay (Computer/Fuel System): Testing and Inspection

INSPECTION




1. INSPECT INTEGRATION RELAY

NOTE:
- Some relays are built into the integration relay (unit: A). The integration relay cannot be disassembled. If there is a malfunction in the circuit of the integration relay, replace the integration relay.
- The internal circuit of the integration relay is as shown in the illustration. Inspect the integration relay using the given procedures.




a. Measure the resistance of the C/OPN relay.




1. Using an ohmmeter, measure the resistance between terminal.




2. Connect the battery's positive (+) lead to terminals 2B-5 and negative (-) lead to terminal 2B-7. Using an voltmeter, measure the resistance between terminal.




b. Measure the resistance of the EFI MAIN relay.




1. Remove the EFI fuse. Using an ohmmeter, measure the resistance between the terminals.




2. Connect the battery's positive (+) lead to terminal 2A-6 and negative (-) lead to terminal 2A-7. Using an ohmmeter, measure the resistance between terminal.




c. Measure the resistance of the EFI NO. 2 relay.




1. Remove the F/PMP fuse. Using an ohmmeter, measure the resistance between the terminals.




2. Connect the battery's positive (+) lead to terminal 2A-8 and negative (-) lead to terminal 2B-3. Using an ohmmeter, measure the resistance between the terminals.




d. Measure the resistance of the EFI INJ relay.




1. Remove the INJ fuse. Using an ohmmeter, measure the resistance between the terminals.




2. Connect the battery's positive (+) lead to terminal 2A-2 and negative (-) lead to terminal 2A-3. Using an ohmmeter, measure the resistance between the terminals.