Relay Control Module Removal, Installation, and Test: Test

Relay Control Module - Test
The relay control module is part of the under-hood fuse/relay box, and contains these relays:
- Left headlight low beam relay
- Right headlight low beam relay
- Taillight relay
- Windshield wiper motor relay
- Windshield wiper intermittent relay
- Windshield wiper high/low relay
1. Test each relay circuit as shown.
2. If any of these relay circuit fails the test, replace the relay control module.
  
  Fig 1: Identifying Relay Control Module Connector A (16P)
  Courtesy of AMERICAN HONDA MOTOR CO., INC.
  
  Fig 2: Identifying Relay Control Module Connector B (10P)
  Courtesy of AMERICAN HONDA MOTOR CO., INC.
Left Headlight Low Beam Relay

There should be battery voltage at terminal B9 when battery power is connected to terminals B8, and body ground is connected to terminal B6. There should be no voltage at terminal B9 when power is disconnected.

Fig 3: Left Headlight Low Beam Relay - Circuit Diagram
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Right Headlight Low Beam Relay

There should be battery voltage at terminal B2 when battery power is connected to terminals B7, and body ground is connected to terminal B6. There should be no voltage at terminal B2 when power is disconnected.

Fig 4: Right Headlight Low Beam Relay - Circuit Diagram
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Taillight Relay

There should be battery voltage at terminal A2 when battery power is connected to terminal A8, and body ground is connected to terminal A1. There should be no voltage at terminal A2 when terminal A1 is disconnected.

Fig 5: Taillight Relay - Circuit Diagram
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Windshield Wiper Motor Relay

There should be continuity between terminals A16 and A3, and terminals A16 and A6 when battery power is connected to terminal A9, and body ground is connected to terminal B1. There should be no continuity between terminals A16 and A3, and terminals A16 and A6 when power is disconnected.

Fig 6: Windshield Wiper Motor Relay - Circuit Diagram
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Windshield Wiper Intermittent Relay

There should be battery voltage at terminal A12 when battery power is connected to terminals A16 and A9, and body ground is connected to terminals B1 and A6. There should be no voltage at terminal A12 when terminal A6 is disconnected.

Fig 7: Windshield Wiper Intermittent Relay - Circuit Diagram
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Windshield Wiper High/Low Relay

There should be battery voltage at terminal A13 when battery power is connected to terminals A16 and A9, and body ground is connected to terminals B1, A3, and A6. There should be no voltage at terminal A13 when terminal A3 is disconnected.

Fig 8: Windshield Wiper High/Low Relay - Circuit Diagram
Courtesy of AMERICAN HONDA MOTOR CO., INC.