What is the function and testing procedure for relays on Honda Ridgeline?

These cars have a number of electrical add-ons, such as fuel injection system, horns, starter and fog lamps, which are controlled by relays that ensure transmission of electric signals to the respective components. By allowing low-current control circuit to open and close high-current power circuit relays function. These relays can be found in the engine compartment fuse/relay box and near the fuse and relay boxes under the dashboard. There are usually three main types: normally-open type-A , normally-open type-B, and five-terminal type ones. The internal circuitry is similar on Type A and Type B relays while they differ in external spade terminal arrangement and numbering. Compared to Type A or Type B relays, five-terminal relays have different internal circuitry plus an added external spade terminal. To test a relay it must be removed from the vehicle and an ohmmeter used to check for continuity. Normally open Type A relays for instance which are used for various purposes such as air conditioning; horns; window lifters have four external spade terminals arranged in two rows. When you unplug them from power sources you should make sure there is no connection between terminals No1 &No2 on one hand but also that there is between terminal No 3 connected to power source via (terminal No 4) a ground wire respectively.The normally-open Type B ones similarly have four external parallel rows of spade terminals just like their counterparts above mentioned for example blower motors; rear defoggers . For these B-type testing is simple which requires breaking connection between contact points No1&No3 when current ceases to flow through them whereas creating path between contacts No1&No3 using their corresponding feeds wires from connectors No2&No4 which are connected with interfaced power line as well as grounded with earth respectively.A last category we will take care about here is five-terminal devices known for moonroof control ; high beam cut-off and others need us to examine continuity between point No 1 &No 4 without power supply whereas later on it should be established by joining terminal No. 3 to power and the ground respectively provided that connection has been completed at points No2&No5. These relay switches are normally discarded as they cannot be repaired.

Genuine Honda Ridgeline Relay

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14 Relays found

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Honda Ridgeline Relay Assembly, Power (Micro Iso) (Mitsuba)
Part Number: 39794-SDA-A05
$21.08 MSRP: $30.03
You Save: $8.95 (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:
- 2017-2021 Honda Ridgeline | 4 Door Black, 4 Door RT (2WD), 4 Door RT (AWD), 4 Door RTL, 4 Door RTL (2WD), 4 Door RTL (AWD), 4 Door RTS (2WD), 4 Door RTS (AWD), 4 Door Sport (2WD), 4 Door Sport (AWD) | KA 6AT, KA 9AT
- 2012-2014 Honda Ridgeline | 4 Door RT, 4 Door RTL, 4 Door RTS, 4 Door Sport | KA 5AT
- 2006 Honda Ridgeline | 4 Door RT, 4 Door RTL, 4 Door RTS | KA 5AT
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Honda Ridgeline Relay Assembly, Engine Control Module (Denso)
Part Number: 39794-SDA-902
$50.08 MSRP: $71.34
You Save: $21.26 (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:
- 2017-2023 Honda Ridgeline | 4 Door Black, 4 Door RT (2WD), 4 Door RT (AWD), 4 Door RTL, 4 Door RTL (2WD), 4 Door RTL (AWD), 4 Door RTS (2WD), 4 Door RTS (AWD), 4 Door Sport (2WD), 4 Door Sport (AWD), Black Edition, RTL, RTL-E, Sport | KA 6AT, KA 9AT
- 2006-2014 Honda Ridgeline | 4 Door RT, 4 Door RTL, 4 Door RTS, 4 Door RTX, 4 Door Sport | KA 5AT
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Honda Ridgeline Relay Assembly, Power (Micro Iso) (Denso)
Part Number: 39794-SDA-A02
$23.55 MSRP: $33.54
You Save: $9.99 (30%)
ADD TO CART
Product Specifications
- Other Name: Relay
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2017-2021 Honda Ridgeline | 4 Door RTL (2WD), 4 Door RTL (AWD), 4 Door RTS (2WD), 4 Door RTS (AWD), 4 Door Sport (2WD), 4 Door Sport (AWD) | KA 6AT, KA 9AT
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Honda Ridgeline Relay Assembly, Power (Micro Iso) (Denso)
Part Number: 39794-T5A-J01
$29.23 MSRP: $41.63
You Save: $12.40 (30%)
ADD TO CART
Product Specifications
- Other Name: Relay
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2017-2023 Honda Ridgeline | 4 Door Black, 4 Door RT (2WD), 4 Door RT (AWD), 4 Door RTL, 4 Door RTL (2WD), 4 Door RTL (AWD), 4 Door RTS (2WD), 4 Door RTS (AWD), 4 Door Sport (2WD), 4 Door Sport (AWD), Black Edition, RTL, RTL-E, Sport | KA 6AT, KA 9AT
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Honda Ridgeline Relay Assembly, Power (Micro Iso) (Omron)
Part Number: 39794-SDA-A03
$21.26 MSRP: $30.03
You Save: $8.77 (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:
- 2017-2023 Honda Ridgeline | 4 Door Black, 4 Door RT (2WD), 4 Door RT (AWD), 4 Door RTL, 4 Door RTL (2WD), 4 Door RTL (AWD), 4 Door RTS (2WD), 4 Door RTS (AWD), 4 Door Sport (2WD), 4 Door Sport (AWD), Black Edition, RTL, RTL-E, Sport | KA 6AT, KA 9AT
- 2006-2014 Honda Ridgeline | 4 Door RT, 4 Door RTL, 4 Door RTS, 4 Door RTX, 4 Door Sport | KA 5AT
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Honda Ridgeline 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:
- 2017-2023 Honda Ridgeline | 4 Door Black, 4 Door RT (2WD), 4 Door RT (AWD), 4 Door RTL, 4 Door RTL (2WD), 4 Door RTL (AWD), 4 Door RTS (2WD), 4 Door RTS (AWD), 4 Door Sport (2WD), 4 Door Sport (AWD), Black Edition, RTL, RTL-E, Sport | KA 6AT, KA 9AT
- 2006-2014 Honda Ridgeline | 4 Door RT, 4 Door RTL, 4 Door RTS, 4 Door RTX, 4 Door Sport | KA 5AT
View related parts
Honda Ridgeline Relay Assembly, Power (5P) (Micro Iso) (Mitsuba)
Part Number: 39794-S10-003
$36.76 MSRP: $51.92
You Save: $15.16 (30%)
ADD TO CART
Product Specifications
- Other Name: Relay
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2017-2023 Honda Ridgeline | 4 Door Black, 4 Door RT (2WD), 4 Door RT (AWD), 4 Door RTL, 4 Door RTL (2WD), 4 Door RTL (AWD), 4 Door RTS (2WD), 4 Door RTS (AWD), 4 Door Sport (2WD), 4 Door Sport (AWD), Black Edition, RTL, RTL-E, Sport | KA 6AT, KA 9AT
- 2006-2014 Honda Ridgeline | 4 Door RTL | KA 5AT
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Honda Ridgeline Relay Assembly (Micro Iso)
Part Number: 39792-SDA-A01
$8.19 MSRP: $11.57
You Save: $3.38 (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:
- 2017-2023 Honda Ridgeline | 4 Door Black, 4 Door RT (2WD), 4 Door RT (AWD), 4 Door RTL, 4 Door RTL (2WD), 4 Door RTL (AWD), 4 Door RTS (2WD), 4 Door RTS (AWD), 4 Door Sport (2WD), 4 Door Sport (AWD), Black Edition, RTL, RTL-E, Sport | KA 6AT, KA 9AT
- 2006-2014 Honda Ridgeline | 4 Door RT, 4 Door RTL, 4 Door RTS, 4 Door RTX, 4 Door Sport | KA 5AT
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Honda Ridgeline Relay Assembly, Turn Signal And Hazard (Omron)
Part Number: 38300-SDB-A03
$24.98 MSRP: $35.28
You Save: $10.30 (30%)
ADD TO CART
Product Specifications
- Other Name: Turn Signal & Hazard Flasher; Flasher, Relay
- Replaces: 38300-SDA-A03
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2006-2014 Honda Ridgeline | 4 Door RT, 4 Door RTL, 4 Door RTS, 4 Door RTX, 4 Door Sport | KA 5AT
View related parts
Honda Ridgeline Relay Assembly, Power (Micro Iso) (Omron)
Part Number: 39792-SJC-A01
$7.09 MSRP: $10.02
You Save: $2.93 (30%)
ADD TO CART
Product Specifications
- Other Name: Relay
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2017-2021 Honda Ridgeline | 4 Door Black, 4 Door RT (2WD), 4 Door RT (AWD), 4 Door RTL, 4 Door RTL (2WD), 4 Door RTL (AWD), 4 Door RTS (2WD), 4 Door RTS (AWD), 4 Door Sport (2WD), 4 Door Sport (AWD) | KA 6AT, KA 9AT
- 2006-2014 Honda Ridgeline | 4 Door RT, 4 Door RTL, 4 Door RTS, 4 Door RTX, 4 Door Sport | KA 5AT
View related parts
Honda Ridgeline Relay Assembly, Power (4P) (Rc-2201) (Mitsuba)
Part Number: 39795-SB2-003
$69.54 MSRP: $98.21
You Save: $28.67 (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:
- 2006-2008 Honda Ridgeline | 4 Door RT, 4 Door RTL, 4 Door RTS, 4 Door RTX | KA 5AT
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Honda Ridgeline Relay Assembly, Rfc
Part Number: 39795-SJK-004
$21.81 MSRP: $30.79
You Save: $8.98 (30%)
ADD TO CART
Product Specifications
- Other Name: Relay
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2017-2021 Honda Ridgeline | 4 Door Black, 4 Door RTL | KA 6AT, KA 9AT
View related parts
Honda Ridgeline Relay Assembly, Ignition (1) (Omron)
Part Number: 39794-TG7-A01
$5.22 MSRP: $7.37
You Save: $2.15 (30%)
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2017-2021 Honda Ridgeline | 4 Door Black, 4 Door RT (2WD), 4 Door RT (AWD), 4 Door RTL, 4 Door RTL (2WD), 4 Door RTL (AWD), 4 Door RTS (2WD), 4 Door RTS (AWD), 4 Door Sport (2WD), 4 Door Sport (AWD) | KA 6AT, KA 9AT
View related parts
Honda Ridgeline Relay Assembly, Power (5P) (Micro Iso)
Part Number: 39794-SNB-E01
$29.48 MSRP: $41.63
You Save: $12.15 (30%)
ADD TO CART
Product Specifications
- Other Name: Relay
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2017-2019 Honda Ridgeline | 4 Door Black, 4 Door RTL, 4 Door RTL (2WD), 4 Door RTL (AWD) | KA 6AT

Honda Ridgeline Relay Parts Questions & Experts Answers

Relay Assembly, Power (Micro Iso) (Omron)
39794-SDA-A03
Q: What is the function and testing procedure for relays on Honda Ridgeline?
A: These cars have a number of electrical add-ons, such as fuel injection system, Horns, starter and fog lamps, which are controlled by relays that ensure transmission of electric signals to the respective components. By allowing low-current control circuit to open and close high-current power circuit relays function. These relays can be found in the engine compartment fuse/relay box and near the fuse and relay boxes under the dashboard. There are usually three main types: normally-open type-A , normally-open type-B, and five-terminal type ones. The internal circuitry is similar on Type A and Type B relays while they differ in external spade terminal arrangement and numbering. Compared to Type A or Type B relays, five-terminal relays have different internal circuitry plus an added external spade terminal. To test a relay it must be removed from the vehicle and an ohmmeter used to check for continuity. Normally open Type A relays for instance which are used for various purposes such as air conditioning; horns; window lifters have four external spade terminals arranged in two rows. When you unplug them from power sources you should make sure there is no connection between terminals No1 &No2 on one hand but also that there is between terminal No 3 connected to power source via (terminal No 4) a ground wire respectively.The normally-open Type B ones similarly have four external parallel rows of spade terminals just like their counterparts above mentioned for example blower motors; rear defoggers . For these B-type testing is simple which requires breaking connection between contact points No1&No3 when current ceases to flow through them whereas creating path between contacts No1&No3 using their corresponding feeds wires from connectors No2&No4 which are connected with interfaced power line as well as grounded with earth respectively.A last category we will take care about here is five-terminal devices known for moonroof control ; high beam cut-off and others need us to examine continuity between point No 1 &No 4 without power supply whereas later on it should be established by joining terminal No. 3 to power and the ground respectively provided that connection has been completed at points No2&No5. These relay switches are normally discarded as they cannot be repaired.