What are the functions and types of relays used in electrical systems, and how can they be tested on Honda Odyssey?

Some of the electrical accessories in the vehicle which employ relays include the fuel injection system, horns, starter, and fog lamps, whereby a low amperage control circuit will switch on a high amperage power circuit. In the case that there is a defective relay, there is no power supplied to the components and defective relays cannot be repaired and has to be replaced. There are three basic types of relays: for the normally-open type; Type A and Type B, while for the five-terminal type. Both Type A and Type B have same internal wiring but different external terminals, while five terminal relays have different internal wiring as well as an extra terminal. To test a relay, the relay should be taken out of the car and then, via an ohmmeter, one should check the continuity. Normally-open type A relays are applied to air conditioning relay, headlight relay and so on, their type can be distinguished by terminals. Others regarded testing as the process of checking whether or not there is continuity between particular terminals when they are active and when they are inactive. As for Type B relay, most of them are normally-open, they include blower motor and rear window defogger, and the identification focuses on terminals. Five terminal relays, used for functions such as moonroof, contain an apparent extra terminal to indicate that they are of this type and testing involves measuring continuity between stated terminals in specific situations.

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39 Relays found

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Honda Odyssey Relay Assembly, Power (Micro Iso) (Mitsuba)
Part Number: 39794-SDA-A05
$21.63 MSRP: $30.81
You Save: $9.18 (30%)
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Product Specifications
- Other Name: Horn Relay; Relay
- Replaces: 39794-SDA-A01, 39794-SDA-A04
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2011-2017 Honda Odyssey | 5 Door EX, 5 Door EX-L, 5 Door LX, 5 Door SE, 5 Door Touring | KA 5AT, KA 6AT
- 2005-2006 Honda Odyssey | 5 Door EX, 5 Door EX-L, 5 Door EXL-T, 5 Door LX | KA 5AT
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Honda Odyssey Relay Assembly, Engine Control Module (Denso)
Part Number: 39794-SDA-902
$51.37 MSRP: $73.19
You Save: $21.82 (30%)
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Product Specifications
- Other Name: Ecm Relay; Relay
- Replaces: 39794-SDA-901
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2005-2022 Honda Odyssey | 5 Door ELITE (10AT), 5 Door EX, 5 Door EX (10AT), 5 Door EX-L, 5 Door EX-L (10AT), 5 Door EXL-T, 5 Door LX, 5 Door LX (10AT), 5 Door SE, 5 Door Touring, 5 Door Touring (10AT) | KA 5AT, KA 6AT, KA 9AT, KA XAT
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Honda Odyssey Relay Assembly, Power (Micro Iso) (Denso)
Part Number: 39794-T5A-J01
$29.99 MSRP: $42.72
You Save: $12.73 (30%)
ADD TO CART
Product Specifications
- Other Name: Relay
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2018-2022 Honda Odyssey | 5 Door ELITE (10AT), 5 Door EX, 5 Door EX (10AT), 5 Door EX-L, 5 Door EX-L (10AT), 5 Door LX, 5 Door LX (10AT), 5 Door Touring (10AT) | KA 9AT, KA XAT
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Honda Odyssey Relay Assembly, Turn Signal And Hazard (Mitsuba)
Part Number: 38300-S9A-003
$65.61 MSRP: $92.66
You Save: $27.05 (30%)
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Product Specifications
- Other Name: Turn Signal Flasher
- Replaces: 38300-S9V-A11, 38300-SB2-671, 38300-SE3-003, 38300-SE3-013, 38300-S5A-003, 38300-SV1-A11, 38300-SV1-A00, 38300-S9V-A01, 38300-S47-013, 38300-SE3-004, 38300-S5T-003, 38300-SA5-013, 38300-SA5-672, 38300-SV1-A01, 38300-SA5-003, 38300-SA5-004, 38300-SB2-672, 38300-S5T-004, 38300-SA5-671
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 1995-2004 Honda Odyssey | 5 Door EX, 5 Door EX-L, 5 Door LX, 5 Door LX (6 Seats), 5 Door LX (7 Seats), 5 Door VAN | KA 4AT, KA 5AT
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Honda Odyssey Relay Assembly, Power (4P) (Rc-2226) (Brown) (Mitsuba)
Part Number: 39794-SL0-J01
$70.06 MSRP: $98.96
You Save: $28.90 (30%)
ADD TO CART
Product Specifications
- Other Name: Relay; Power Relay, Relay Assembly
- Replaces: 39794-SE0-004, 39794-SL0-004, 39794-SE0-003
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 1995-1998 Honda Odyssey | 5 Door EX, 5 Door LX (6 Seats), 5 Door LX (7 Seats) | KA 4AT
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Honda Odyssey Relay Assembly, Turn Signal And Hazard (Trico)
Part Number: 38300-S9V-A01
$65.61 MSRP: $92.66
You Save: $27.05 (30%)
ADD TO CART
Product Specifications
- Other Name: Turn Signal & Hazard Flasher
- Replaced by: 38300-S9A-003
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 1999 Honda Odyssey | 5 Door EX, 5 Door LX, 5 Door VAN | KA 4AT
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Honda Odyssey Relay Assembly, Power (4P) (056700-7250) (Denso)
Part Number: 39794-SE0-003
$70.06 MSRP: $98.96
You Save: $28.90 (30%)
ADD TO CART
Product Specifications
- Replaced by: 39794-SL0-J01
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 1995-1998 Honda Odyssey | 5 Door EX, 5 Door LX (6 Seats), 5 Door LX (7 Seats) | KA 4AT
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Honda Odyssey Relay Assembly, Turn Signal And Hazard (Front-3309) (Mitsuba)
Part Number: 38300-SE3-013
$65.61 MSRP: $92.66
You Save: $27.05 (30%)
ADD TO CART
Product Specifications
- Position: Front
- Replaced by: 38300-S9A-003
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2000-2004 Honda Odyssey | 5 Door EX, 5 Door EX-L, 5 Door LX, 5 Door VAN | KA 4AT, KA 5AT
- 1995-1998 Honda Odyssey | 5 Door EX, 5 Door LX (6 Seats), 5 Door LX (7 Seats) | KA 4AT
View related parts
Honda Odyssey Relay Assembly, Power (Micro Iso) (Omron)
Part Number: 39794-SDA-A03
$21.82 MSRP: $30.81
You Save: $8.99 (30%)
ADD TO CART
Product Specifications
- Other Name: Blower Motor Relay; Fuel Pump Relay, Horn Relay, Relay
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2007-2022 Honda Odyssey | 5 Door ELITE (10AT), 5 Door EX, 5 Door EX (10AT), 5 Door EX-L, 5 Door EX-L (10AT), 5 Door EXL-T, 5 Door LX, 5 Door LX (10AT), 5 Door SE, 5 Door Touring, 5 Door Touring (10AT) | KA 5AT, KA 6AT, KA 9AT, KA XAT
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Honda Odyssey Relay Assembly, Fuel Pump (Denso)
Part Number: 39794-SDA-004
$46.93 MSRP: $66.28
You Save: $19.35 (30%)
ADD TO CART
Product Specifications
- Other Name: Fuel Pump Relay; Relay
- Replaces: 39794-SDA-003, 39794-SDA-305
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2005-2017 Honda Odyssey | 5 Door EX, 5 Door EX-L, 5 Door EXL-T, 5 Door LX, 5 Door SE, 5 Door Touring | KA 5AT, KA 6AT
View related parts
Honda Odyssey Relay Assembly, Power (5P) (Micro Iso) (Mitsuba)
Part Number: 39794-S10-003
$37.71 MSRP: $53.27
You Save: $15.56 (30%)
ADD TO CART
Product Specifications
- Other Name: Relay
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 1998-2022 Honda Odyssey | 5 Door ELITE (10AT), 5 Door EX, 5 Door EX (10AT), 5 Door EX-L, 5 Door EX-L (10AT), 5 Door EXL-T, 5 Door LX, 5 Door LX (10AT), 5 Door Touring, 5 Door Touring (10AT), 5 Door VAN | KA 4AT, KA 5AT, KA 6AT, KA 9AT, KA XAT
View related parts
Honda Odyssey Relay Assembly, Main
Part Number: 39400-S84-003
$83.43 MSRP: $117.84
You Save: $34.41 (30%)
ADD TO CART
Product Specifications
- Other Name: Main Relay; ECM Relay
- Replaces: 39400-S84-A01, 39400-S82-A01
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 1998-2004 Honda Odyssey | 5 Door EX, 5 Door EX-L, 5 Door LX, 5 Door LX (6 Seats), 5 Door LX (7 Seats), 5 Door VAN | KA 4AT, KA 5AT
View related parts
Honda Odyssey Relay Assembly (Micro Iso)
Part Number: 39792-SDA-A01
$8.40 MSRP: $11.87
You Save: $3.47 (30%)
ADD TO CART
Product Specifications
- Other Name: Blower Motor Relay; Relay
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2005-2022 Honda Odyssey | 5 Door ELITE (10AT), 5 Door EX, 5 Door EX (10AT), 5 Door EX-L, 5 Door EX-L (10AT), 5 Door EXL-T, 5 Door LX, 5 Door LX (10AT), 5 Door SE, 5 Door Touring, 5 Door Touring (10AT) | KA 5AT, KA 6AT, KA 9AT, KA XAT
View related parts
Honda Odyssey Relay Assembly, Power (Micro Iso) (Omron)
Part Number: 39792-SJC-A01
$7.28 MSRP: $10.28
You Save: $3.00 (30%)
ADD TO CART
Product Specifications
- Other Name: Relay
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2011-2022 Honda Odyssey | 5 Door ELITE (10AT), 5 Door EX, 5 Door EX (10AT), 5 Door EX-L, 5 Door EX-L (10AT), 5 Door LX, 5 Door LX (10AT), 5 Door SE, 5 Door Touring, 5 Door Touring (10AT) | KA 5AT, KA 6AT, KA 9AT, KA XAT
View related parts
Honda Odyssey Relay Assembly, Power (4P) (Micro Iso) (Matsushita)
Part Number: 39794-S04-014
$38.83 MSRP: $54.86
You Save: $16.03 (30%)
ADD TO CART
Product Specifications
- Replaces: 39794-S04-004
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 1997-1999 Honda Odyssey | 5 Door EX, 5 Door LX, 5 Door LX (6 Seats), 5 Door LX (7 Seats), 5 Door VAN | KA 4AT
View related parts
Honda Odyssey Relay Assembly, Power (4P) (Rc-2201) (Mitsuba)
Part Number: 39795-SB2-003
$71.34 MSRP: $100.77
You Save: $29.43 (30%)
ADD TO CART
Product Specifications
- Other Name: Power Relay; Relay
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2004-2010 Honda Odyssey | 5 Door EX, 5 Door EX-L, 5 Door EXL-T, 5 Door LX | KA 5AT
- 1995-2001 Honda Odyssey | 5 Door EX, 5 Door LX, 5 Door LX (6 Seats), 5 Door LX (7 Seats) | KA 4AT
View related parts
Honda Odyssey Relay Assembly, Power (4P No 305) (056700-9260) (Denso)
Part Number: 39792-SL4-003
$53.06 MSRP: $74.95
You Save: $21.89 (30%)
ADD TO CART
Product Specifications
- Other Name: Relay; Power Relay
- Replaces: 39792-SE0-004, 39792-SE0-003, 39792-SE4-A01, 39792-SM1-A01, 39792-SP0-004
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 1995-2004 Honda Odyssey | 5 Door EX, 5 Door EX-L, 5 Door LX, 5 Door LX (6 Seats), 5 Door LX (7 Seats), 5 Door VAN | KA 4AT, KA 5AT
View related parts
Honda Odyssey Relay Assembly, Main
Part Number: 39400-SV4-003
$121.48 MSRP: $173.05
You Save: $51.57 (30%)
ADD TO CART
Product Specifications
- Other Name: Main Relay; Relay
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 1995-1997 Honda Odyssey | 5 Door EX, 5 Door LX (6 Seats), 5 Door LX (7 Seats) | KA 4AT
View related parts
Honda Odyssey Relay Assembly, Power (Micro Iso)
Part Number: 39794-TBA-A01
$3.81 MSRP: $5.39
You Save: $1.58 (30%)
ADD TO CART
Product Specifications
- Other Name: Relay
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2018-2022 Honda Odyssey | 5 Door ELITE (10AT), 5 Door EX, 5 Door EX (10AT), 5 Door EX-L, 5 Door EX-L (10AT), 5 Door LX, 5 Door LX (10AT), 5 Door Touring (10AT) | KA 9AT, KA XAT
View related parts
Honda Odyssey Relay Assembly, Power (5P)
Part Number: 39793-SV4-003
$42.92 MSRP: $60.62
You Save: $17.70 (30%)
ADD TO CART
Product Specifications
- Other Name: Relay
- Replaces: 33134-SH3-G01
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 1999-2004 Honda Odyssey | 5 Door EX, 5 Door EX-L, 5 Door LX | KA 4AT, KA 5AT

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Honda Odyssey Relay

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Honda Odyssey Relay Parts Questions & Experts Answers

Relay Assembly, Power (4P No 305) (056700-9260) (Denso)
39792-SL4-003
Q: What are the functions and types of relays used in electrical systems, and how can they be tested on Honda Odyssey?
A: Some of the electrical accessories in the vehicle which employ relays include the fuel injection system, Horns, starter, and fog lamps, whereby a low amperage control circuit will switch on a high amperage power circuit. In the case that there is a defective relay, there is no power supplied to the components and defective relays cannot be repaired and has to be replaced. There are three basic types of relays: for the normally-open type; Type A and Type B, while for the five-terminal type. Both Type A and Type B have same internal wiring but different external terminals, while five terminal relays have different internal wiring as well as an extra terminal. To test a relay, the relay should be taken out of the car and then, via an ohmmeter, one should check the continuity. Normally-open type A relays are applied to air conditioning relay, headlight relay and so on, their type can be distinguished by terminals. Others regarded testing as the process of checking whether or not there is continuity between particular terminals when they are active and when they are inactive. As for Type B relay, most of them are normally-open, they include blower motor and rear window defogger, and the identification focuses on terminals. Five terminal relays, used for functions such as moonroof, contain an apparent extra terminal to indicate that they are of this type and testing involves measuring continuity between stated terminals in specific situations.