Power Relay Test

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

NOTE: Turn signal/hazard relay input test.

Relay Test 
A/C compressor clutch relay Normally-open type A 
A/T reverse relay 
Condenser fan relay 
Front fog light relay 
Headlight relay 1 
Headlight relay 2 
Horn relay 
PGM-FI main relay 1 
Power window relay 
Radiator fan relay 
Rear accessory power socket relay 
Seat heater main relay 
Security horn relay 
Starter cut relay (A/T) 
Taillight relay 
Blower motor relay Normally-open type B 
Rear window defogger relay 
PGM-FI main relay 2 Five terminal type 
Key interlock relay 
Shift lock relay 
Sunroof open relay 
Sunroof open relay 
Security starter cut relay 

Normally-open type A:


Check for continuity between the terminals.

  • There should be continuity between the No. 1 and No. 2 terminals when power and ground are connected to the No. 3 and No. 4 terminals.
  • There should be no continuity between the No. 1 and No. 2 terminals when power is disconnected.

 

type 1: 

type 2: 

PGM-FI main relay 1

type 1: 

type 2: 

Normally-open type B:


Check for continuity between the terminals.

  • There should be continuity between the No. 1 and No. 3 terminals when power and ground are connected to the No. 2 and No. 4 terminals.
  • There should be no continuity between the No. 1 and No. 3 terminals when power is disconnected.

 

Rear window defogger relay

 

Blower motor relay

type 1: 

type 2: 

Five terminal type


Check for continuity between the terminals.

  • There should be continuity between the No. 1 and No. 2 terminals when power and ground are connected to the No. 3 and No. 5 terminals.
  • There should be continuity between the No. 1 and No. 4 terminals when power is disconnected.

 

 

PGM-FI main relay 2

type 1: 

type 2: