Standard Ignition RY-230 HVAC Automatic Temperature Control (ATC) Relay

HVAC Relay for ATC Systems

Standard Ignition RY-230 is an HVAC automatic temperature control relay built for 12-volt systems with a 25-amp rating. It uses a rectangular female connector, four male blade terminals, and includes a mounting bracket for secure installation in the HVAC relay location.

Compatible with select Honda Passport, Isuzu Rodeo, Isuzu Amigo, Isuzu Pickup, Isuzu Trooper, Geo Storm, Geo Spectrum, Chevrolet Spectrum, Hyundai Excel, Isuzu I-Mark, and Isuzu Impulse applications, this relay supports automatic climate control circuit operation in vehicles that use the specified connector and terminal layout. Standard Ignition RY-230 is also cross-referenced to Four Seasons 36027 for the same application.

Key Features

• HVAC automatic temperature control relay
• 12 V electrical system rating
• 25 A amperage rating
• Rectangular female connector with 4 male blade terminals
• Mounting bracket included
• Relay function for HVAC control circuits

Application Details

Fits 1994-1997 Honda Passport, N/A.

Fits 1991-1995 Isuzu Rodeo, N/A.

Fits 1993-1994 Isuzu Amigo, N/A.

Fits 1991-1994 Isuzu Pickup, N/A.

Fits 1991-1992 Isuzu Trooper, N/A.

Fits 1986-1987 Isuzu Trooper, N/A.

Fits 1990 Geo Storm, N/A.

Fits 1989-1990 Isuzu Trooper, N/A.

Fits 1989 Geo Spectrum, N/A.

Fits 1985-1989 Isuzu I-Mark, N/A.

Fits 1983-1989 Isuzu Impulse, N/A.

Fits 1985-1988 Chevrolet Spectrum, N/A.

Fits 1988 Hyundai Excel, N/A.

What It Helps Fix

• HVAC blower or climate control relay failure
• Intermittent automatic temperature control operation
• No-response HVAC relay circuit issues
• Electrical switching problems in the climate control system
• Heat or A/C operation loss caused by a failed relay

Installation Notes

Verify the connector shape, terminal count, and mounting style before installation. This relay uses a 4-terminal blade layout, so matching the vehicle’s original relay configuration is important for proper fitment in Honda Passport, Isuzu Rodeo, and related applications. Confirm the HVAC relay location and inspect the connector for corrosion or heat damage before reconnecting the circuit.

Quality Assurance

Standard Ignition supplies replacement electrical components for automotive repair applications, and this relay is built to match the specified voltage, amperage, and terminal configuration for the listed vehicles.