Power Relay Test

Power Relay Test

Special Tools Required

- Relay Puller 07AAC-000A1A0 or 07AAC-000A2A1

Use this chart to identify the type of relay, then do the test listed for it.





NOTE:

- The following relays are part of the relay control module: PGM-FI main relay 1, ignition coil relay, PGM-FI subrelay and ETCS control relay. To test these relays, do the relay control module test.
- Carefully remove the relay from the under-dash fuse/relay box using the relay puller. Do not use pliers. Pliers will damage the relay.





Normally-open Four-terminal Type

Check for continuity between the terminals.

- There should be continuity between terminals No. 1 and No. 2 when battery power is connected to terminal No. 4, and body ground is connected to terminal No. 3.
- There should be no continuity between terminals No. 1 and No. 2 when power is disconnected.










Five-terminal Type

Check for continuity between the terminals.

- There should be continuity between terminals No. 1 and No. 2 when battery power is connected to terminal No. 5, and body ground is connected to terminal No. 3.
- There should be continuity between terminals No. 1 and No. 4 when power is disconnected.










Relay Control Module Test

The relay control module is part of the under-hood fuse/relay box, and it contains these relays:

- PGM-FI main relay 1
- Ignition coil relay
- PGM-FI subrelay
- ETCS control relay
- Horn relay

If any of these relays fail the test, replace the under-hood fuse/relay box.

1. Do the battery terminal disconnection procedure, then disconnect under-hood fuse/relay box connectors C (2P), E (14P), and H (9P).

NOTE: All connector views are wire side of female terminals.






2. Connect battery power to terminal C2.

PGM-FI main relay 1:

- Connect terminal E5 to body ground. There should be battery voltage between terminal H1 and body ground.
- Disconnect terminal E5 from the body ground. There should be no voltage between terminal H1 and the body ground.

Ignition coil relay:

- Connect terminal E5 to body ground. There should be battery voltage between terminal H6 and body ground.
- Disconnect terminal E5 from the body ground. There should be no voltage between terminal H6 and the body ground.

PGM-FI subrelay

- Connect terminals E5 and E13 to body ground. There should be battery voltage between terminal H9 and body ground.
- Disconnect terminal E5 from the body ground. There should be no voltage between terminal H9 and the body ground.

ETCS control relay:

- Connect terminals E5 and E14 to body ground. There should be battery voltage between terminal H7 and body ground.
- Disconnect terminal E5 from the body ground. There should be no voltage between terminal H7 and body ground.

3. Connect battery power to terminal H3.

Horn relay:

- Connect terminal E4 to body ground. There should be battery voltage between terminal H4 and body ground, and between terminal H5 and body ground.
- Disconnect terminal E4 from the body ground. There should be no voltage between terminal H4 and body ground, and between terminal H5 and body ground.