Component Testing

KR25 Secondary Air Injection Pump Relay Test

1. Ignition Off, disconnect the KR25 Secondary Air Injection Pump Relay.
2. Test for 70-110Ω between terminals 85-86 or 1-2.
   • If less than 70Ω or greater than 110Ω 

     Replace the KR25 Secondary Air Injection Pump Relay.

   • If between 70-110Ω 
3. Test for infinite resistance between the terminals listed below:
   • 30-86 or 1-3
   • 30-87 or 3-5
   • 30-85 or 2-3
   • 85-87 or 2-5
   • If less than infinite resistance 

     Replace the KR25 Secondary Air Injection Pump Relay.

   • If infinite resistance 
4. Install a 15A fused jumper wire between relay terminal 85 or 2 and 12V. Install a jumper wire between relay terminal 86 or 1 and ground.
5. Test for less than 2Ω between terminals 30-87 or 3-5.
   • If 2Ω or greater 

     Replace the KR25 Secondary Air Injection Pump Relay.

   • If less than 2Ω 
6. All OK.