Alza Engine Box Fuse and Relay
Relay & Fuse Box Components and Their Functions
| No. | Component | Rating | Function |
|---|---|---|---|
| 1 | ABS 1 Fuse | 40A | Protects the Anti-lock Braking System (ABS) power circuit. |
| 2 | ST Relay | - | Controls the starter motor operation. |
| 3 | R/FAN Relay | - | Controls the operation of the radiator fan. |
| 4 | ECU-B Fuse | 10A | Supplies power to the Engine Control Unit (ECU). |
| 5 | ABS 2 Fuse | 20A | Additional fuse for the ABS system. |
| 6 | BACK UP Fuse | 10A | Powers backup systems such as memory functions (e.g., clock, radio presets). |
| 7 | DOME Fuse | 7.5A | Powers the interior dome lights. |
| 8 | MGC Fuse | 10A | Likely related to the engine management system (could be for Magnetic Clutch). |
| 9 | AM 2 Fuse | 30A | Powers ignition-related systems. |
| 10 | MGC Relay | - | Controls the Magnetic Clutch (potentially for A/C compressor). |
| 11 | HEAD Relay | - | Controls power to the headlights. |
| 12 | EFI Fuse | 15A | Provides power to the Electronic Fuel Injection (EFI) system. |
| 13 | STOP Fuse | 7.5A | Powers the brake light circuit. |
| 14 | ST Fuse | 7.5A | Powers the starter circuit. |
| 15 | H-LP RH (HI) Fuse | 10A | Powers the right-side high beam headlight. |
| 16 | H-LP LH (HI) Fuse | 10A | Powers the left-side high beam headlight. |
| 17 | H-LP RH (LO) Fuse | 10A | Powers the right-side low beam headlight. |
| 18 | H-LP LH (LO) Fuse | 10A | Powers the left-side low beam headlight. |
| 19 | HEATER Fuse | 40A | Powers the heating system (for defrosters, A/C heater, or cabin heater). |
| 20 | R/FAN Fuse | 30A | Powers the radiator fan system. |
Old Alza 2010 - 2018 Main Fuse Block Components and Their Functions
| Fuse | Rating | Function |
|---|---|---|
| POWER IG | 30A | Powers the ignition system and essential electrical components. |
| ACC | 7.5A | Powers accessories like the radio, charging ports, and dashboard functions. |
| ECU IG1 | 7.5A | Provides power to the first ignition circuit of the Engine Control Unit (ECU). |
| HORN/HAZ | 10A | Controls the horn and hazard lights. |
| AM2 | 20A | Supplies power to ignition and engine-related components. |
| D/L | 15A | Controls the door lock system. |
| AM1 | 15A | Powers ignition components and engine management systems. |
| TAIL | 7.5A | Powers the tail lights, parking lights, and license plate lights. |
| FR WIPER | 25A | Protects the front windshield wiper motor circuit. |
| RR WIPER | 15A | Protects the rear windshield wiper motor circuit. |
| FOG RH | 10A | Powers the right fog light. |
| DEFOG | 20A | Powers the rear window defogger. |
| FOG LH | 10A | Powers the left fog light. |
| SOCKET | 15A | Protects the power socket (for charging devices). |
| E/G | 10A | Supplies power to the engine control and management systems. |
| ECU IG2 | 7.5A | Provides power to the second ignition circuit of the ECU. |
| IG1/BACK | 7.5A | Powers the ignition system and reverse lights. |
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