Skip to main content
Power Relay Test

Use this chart to identify the type of relay, then do the test listed for it.
Relay
Test
A/C compressor clutch relay
Normally-open type
A/C condenser fan relay
A/F sensor relay
Blower motor relay
ETCS control relay
Horn relay
Ignition coil relay
Lighting relay 1
Lighting relay 2
PGM-FI main relay 1 (FI MAIN)
PGM-FI main relay 2 (FUEL PUMP)
Power window relay (P/W)
Radiator fan relay
Rear window defogger relay
Starter cut relay (ST CUT)

Normally-open type
Check for continuity between the terminals:
  • There should be continuity between the No. 1 and No. 2 terminals when battery power is connected to the No. 4 terminal, and body ground is connected to the No. 3 terminal.
  • There should be no continuity between the No. 1 and No. 2 terminals when power is disconnected.