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Standard Ignition RY-231 HVAC Automatic Temperature Control (ATC) Relay
| Brand | Standard Ignition RY-231 |
|---|---|
| Amperage Rating | 30 A |
| Connector Gender | Female |
| Connector Shape | Rectangular |
| Functions | Relay |
| Mounting Bracket(s) Included | No |
| Terminal Gender | Male |
| Terminal Type | Blade |
| Voltage | 12 |
| Fits | Isuzu, Acura, Geo, and GMC · 37 vehicles |
ATC relay. Controls HVAC circuits with a 12 V, 30 A relay design.
Blade terminals. Four male blade terminals and one rectangular connector simplify hookup.
Female connector design with a single connection point.
Cross-references FEL-PRO 36028, Four Seasons 19320 and Rostra Powertrain Controls 60-0314 for the same application. See all 15.
HVAC Relay for ATC Systems
Standard Ignition RY-231 is a 12-volt HVAC automatic temperature control relay built for vehicles that use an ATC relay in the climate control circuit. With a 30 amp rating, 4 blade terminals, and a rectangular female connector, it supports reliable relay switching in the heating and air conditioning system.
Fits 1992-2002 Isuzu Trooper, N/A; Fits 1998-2000 Isuzu Amigo, N/A; Fits 1996-1999 Acura SLX, N/A; Fits 1990-1993 Geo Storm, N/A; Fits 1991-1993 Isuzu Stylus, N/A; Fits 1990-1992 Isuzu Impulse, N/A.
- Standard Ignition RY-231 HVAC automatic temperature control relay
- 12 V relay with 30 A amperage rating
- 1 rectangular female connector
- 4 male blade terminals
- No mounting bracket included
Key Features
- Relay function for HVAC automatic temperature control circuits
- Rectangular connector shape for direct electrical interface
- Female connector with male blade terminals
- Built for 12-volt vehicle electrical systems
- Fits Isuzu Trooper, Isuzu Amigo, Acura SLX, Geo Storm, Isuzu Stylus, and Isuzu Impulse applications
Product Details
Standard Ignition RY-231 is an HVAC ATC relay used to switch power within the climate control system. The 30 amp rating and 4-terminal blade design support the electrical demands of automatic temperature control operation. This part cross-references Four Seasons 19320 and Rostra Powertrain Controls 60-0314 for the same application. Standard Ignition RY-231 is a direct-fit option for select Isuzu Trooper and Isuzu Amigo models, along with Acura SLX, Geo Storm, Isuzu Stylus, and Isuzu Impulse vehicles listed in the fitment data.
Common Problems This Relay Can Address
- HVAC blower or control circuit not switching properly
- Intermittent automatic temperature control operation
- Relay-related loss of power to climate control components
- Electrical contact issues at the relay connection
- Failed HVAC relay causing inconsistent heating or air conditioning response
Installation Notes and Tips
Verify the connector style, terminal count, and amperage rating before installation. Match the vehicle’s original relay layout and confirm the ATC circuit uses a 12-volt, 4-blade relay configuration. Inspect the connector for heat damage, corrosion, or loose terminals before installing the new relay. For best results, compare the removed part number to Standard Ignition RY-231 and confirm the application against the vehicle’s HVAC wiring diagram.
Quality Assurance
Standard Ignition supplies electrical components for automotive repair applications, and this relay is built to meet the specifications listed for the part number RY-231.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2002 | Isuzu | Trooper | — | — | N/A | — |
| 2002 | Isuzu | Trooper | 3.5L | V6 | N/A | — |
| 2001 | Isuzu | Trooper | — | — | N/A | — |
| 2001 | Isuzu | Trooper | 3.5L | V6 | N/A | — |
| 2000 | Isuzu | Amigo | — | — | N/A | — |
| 2000 | Isuzu | Trooper | 3.5L | V6 | N/A | — |
| 2000 | Isuzu | Trooper | — | — | N/A | — |
| 1999 | Acura | SLX | — | — | N/A | — |
| 1999 | Isuzu | Amigo | — | — | N/A | — |
| 1999 | Isuzu | Trooper | — | — | N/A | — |
| 1998 | Acura | SLX | — | — | N/A | — |
| 1998 | Isuzu | Amigo | — | — | N/A | — |
| 1998 | Isuzu | Trooper | — | — | N/A | — |
| 1997 | Acura | SLX | — | — | N/A | — |
| 1997 | Isuzu | Trooper | — | — | N/A | — |
| 1997 | Isuzu | Trooper | 3.2L | V6 | N/A | — |
| 1996 | Acura | SLX | — | — | N/A | — |
| 1996 | Isuzu | Trooper | — | — | N/A | — |
| 1996 | Isuzu | Trooper | 3.2L | V6 | N/A | — |
| 1995 | Isuzu | Trooper | — | — | N/A | — |
| 1995 | Isuzu | Trooper | 3.2L | V6 | N/A | — |
| 1994 | Isuzu | Trooper | 3.2L | V6 | N/A | — |
| 1994 | Isuzu | Trooper | — | — | N/A | — |
| 1993 | Geo | Storm | — | — | N/A | — |
| 1993 | Isuzu | Stylus | — | — | N/A | — |
| 1993 | Isuzu | Trooper | — | — | N/A | — |
| 1993 | Isuzu | Trooper | 3.2L | V6 | N/A | — |
| 1992 | Geo | Storm | — | — | N/A | — |
| 1992 | Isuzu | Impulse | — | — | N/A | — |
| 1992 | Isuzu | Stylus | — | — | N/A | — |
| 1992 | Isuzu | Trooper | — | — | N/A | — |
| 1992 | Isuzu | Trooper | 3.2L | V6 | N/A | — |
| 1991 | Geo | Storm | — | — | N/A | — |
| 1991 | Isuzu | Impulse | — | — | N/A | — |
| 1991 | Isuzu | Stylus | — | — | N/A | — |
| 1990 | Geo | Storm | — | — | N/A | — |
| 1990 | Isuzu | Impulse | — | — | N/A | — |
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