X50A Fuse Block - Underhood Label
X50A FUSE BLOCK - UNDERHOOD FUSE AND RELAY IDENTIFICATION LEGEND (EXCEPT LUZ)
| No. | Device Label Name | Fuse And Relay Description | Rating | Circuits |
|---|---|---|---|---|
| Fuses | ||||
| 1 | - | F1UA Fuse | 15A | Q8 Control Solenoid Valve Assembly (MH8) |
| 2 | - | F2UA Fuse | 15A | K20 Engine Control Module |
| 3 | - | F3UA Fuse | - | Not Used |
| 4 | - | F4UA Fuse | 10A | Q13 Evaporative Emission Vent Solenoid Valve |
| 5 | - | F5UA Fuse | 15A | K20 Engine Control Module, Q8 Control Solenoid Valve Assembly (MH8) |
| 6 | - | F6UA Fuse | 30A | KR12B Windshield Wiper Relay, KR12C Windshield Wiper Speed Control Relay |
| 7 | - | F7UA Fuse | - | Not Used |
| 8 | - | F8UA Fuse | - | Not Used |
| 9 | - | F9UA Fuse | 15A | Q17A Fuel Injector 1, Q17B Fuel Injector 2, Q17C Fuel Injector 3, Q17D Fuel injector 4, T8 Ignition Coil |
| 10 | - | F10UA Fuse | 15A | K20 Engine Control Module |
| 11 | - | F11UA Fuse | 10A | B75B Mass Air Flow/Intake Air Temperature Sensor, KR26 Secondary Air Injection Solenoid Valve Relay (LUW/LWE) |
| 12 | - | F12UA Fuse | 30A | KR27 Starter Motor Relay |
| 13 | - | F13UA Fuse | 7.5 | K71 Transmission Control Module |
| 14 | - | F14UA Fuse | 10A | KR26 Secondary Air Injection Solenoid Valve Relay |
| 15 | - | F15UA Fuse | - | Not Used |
| 16 | - | F16UA Fuse | 7.5 | M96 Active Grille Air Shutter Actuator (Y8X) |
| 17 | - | F17UA Fuse | 5A | K36 Inflatable Restraint Sensing and Diagnostic Module |
| 18 | - | F18UA Fuse | 10A | K38 Chassis Control Module |
| 19 | - | F19UA Fuse | - | Not Used |
| 20 | - | F20UA Fuse | - | Not Used |
| 21 | - | F21UA Fuse | 30A | S79LR Window Switch - Left Rear, S79RR Window Switch - Right Rear |
| 22 | - | F22UA Fuse | - | Not Used |
| 23 | - | F23UA Fuse | - | Not Used |
| 24 | - | F24UA Fuse | 30A | M74D Window Motor - Driver (AXG), S79D Window Switch - Driver (AEC), S79P Window Switch - Passenger |
| 25 | - | F25UA Fuse | 20A | M9 Brake Booster Pump Motor |
| 26 | - | F26UA Fuse | 40A | K17 Electronic Brake Control Module |
| 27 | - | F27UA Fuse | 30A | K84 Keyless Entry Control Module |
| 28 | - | F28UA Fuse | 40A | E18 Rear Defogger Grid |
| 29 | - | F29UA Fuse | - | Not Used |
| 30 | - | F30UA Fuse | 15A | K17 Electronic Brake Control Module |
| 31 | - | F31UA Fuse | 20A | K9 Body Control Module |
| 32 | - | F32UA Fuse | 20A | K9 Body Control Module |
| 33 | - | F33UA Fuse | 30A | K29 Seat Heating Control Module (KA1) |
| 34 | - | F34UA Fuse | 25A | K61 Sunroof Control Module (CF5) |
| 35 | - | F35UA Fuse | 30A | T3 Audio Amplifier (UQA) |
| 36 | - | F36UA Fuse | - | Not Used |
| 37 | - | F37UA Fuse | 10A | E13R Headlamp - Right |
| 38 | - | F38UA Fuse | 10A | E13L Headlamp - Left |
| 39 | - | F39UA Fuse | - | Not Used |
| 40 | - | F40UA Fuse | - | Not Used |
| 41 | - | F41UA Fuse | - | Not Used |
| 42 | - | F42UA Fuse | 30A | KR20P Cooling Fan Medium Speed Relay, KR20C Cooling Fan Low Speed Relay |
| 43 | - | F43UA Fuse | - | Not Used |
| 44 | - | F44UA Fuse | - | Not Used |
| 45 | - | F45UA Fuse | 40A | KR20D Cooling Fan High Speed Relay |
| 46 | - | F46UA Fuse | 10A | KR20C Cooling Fan Low Speed Relay, KR20E Cooling Fan Speed Control Relay, KR20F Cooling Fan Relay |
| 47 | - | F47UA Fuse | 10A | B52A Heated Oxygen Sensor 1, B52B Heated Oxygen Sensor 2, E41 Engine Coolant Thermostat Heater, Q12 Evaporative Emission Purge Solenoid Valve, Q22 Intake Manifold Tuning Solenoid valve (LUW), Q40 turbocharger Bypass Solenoid Valve (LUV), Q42 Turbocharger Wastegate Solenoid Valve (LUV) |
| 48 | - | F48UA Fuse | 15A | E29LF Fog Lamp - Left Front (T3U), E29RF Fog Lamp - Right Front (T3U) |
| 49 | - | F49UA Fuse | - | Not Used |
| 50 | - | F50UA Fuse | - | Not Used |
| 51 | - | F51UA Fuse | 15A | P12 Horn |
| 52 | - | F52UA Fuse | 5A | P16 Instrument Cluster |
| 53 | - | F53UA Fuse | 10A | A10 Inside Rearview Mirror (DD8) |
| 54 | - | F54UA Fuse | 5A | K33 HVAC Control Module, P14 Passenger Air Bag Disable Indicator, B87 Rearview Camera |
| 55 | - | F55UA Fuse | 7.5A | S52 Outside Rearview Mirror Switch, S79D Window Switch - Driver (AXG) |
| 56 | - | F56UA Fuse | 15A | G24 Windshield Washer Pump |
| 57 | - | F57UA Fuse | 15A | Not Used |
| 58 | - | F58UA Fuse | - | Not Used |
| 59 | - | F59UA Fuse | 30A | KR25 Secondary Air Injection Pump Relay |
| 60 | - | F60UA Fuse | 7.5A | A9A Outside Rearview Mirror - Driver (DWE), A9B Outside Rearview Mirror - Passenger (DWE) |
| 61 | - | F63UA Fuse | - | Not Used |
| 62 | - | F62UA Fuse | 10A | KR29 A/C Compressor Clutch Relay |
| 63 | - | F63UA Fuse | - | Not Used |
| 64 | - | F64UA Fuse | 5A | K85 Passenger Presence Module |
| 65 | - | F65UA Fuse | - | Not Used |
| 66 | - | F66UA Fuse | - | Not Used |
| 67 | - | F67UA Fuse | 20 | K38 Chassis Control Module |
| 68 | - | F68UA Fuse | - | Not Used |
| 69 | - | F69UA Fuse | 5A | K9 Body Control Module |
| 70 | - | F70UA Fuse | - | Not Used |
| 71 | - | F71UA Fuse | - | Not Used |
| 72 | - | F72UA Fuse | - | Not Used |
| 73 | - | F73UA Fuse | - | Not Used |
| 74 | - | F74UA Fuse | - | Not Used |
| 75 | - | F75A Fuse | - | Not Used |
| Relays | ||||
| 1 | - | KR29 A/C Compressor Clutch Relay | - | Q2 A/C Compressor Clutch |
| 2 | - | KR27\Starter Relay | - | M64 Starter Motor |
| 3 | - | KR20F Cooling Fan Relay | - | KR20F Cooling Fan Relay |
| 4 | - | KR12C Windshield Wiper Speed Control Relay | - | M75 Windshield Wiper Motor |
| 5 | - | KR12B Windshield Wiper Relay | - | KR12C Windshield Wiper Speed Control Relay, M75 Windshield Wiper Motor |
| 6 | - | KR26 Secondary Air Injection Solenoid Valve Relay | - | B157 Secondary Air Injection Pressure Sensor |
| 7 | - | KR75 Engine Controls Ignition Relay | - | F9UA Fuse, F10UA Fuse, F11UA Fuse, F46UA Fuse, F47UA Fuse, KR20P Cooling Fan Medium Speed Relay, KR29 A/C Compressor Clutch Relay (LUW) |
| 8 | - | - | - | Not Used |
| 9 | - | KR20P Cooling Fan Medium Speed Relay | - | Cooling Fan Medium Speed Relay |
| 10 | - | KR20C Cooling Fan Low Speed Relay | - | Cooling Fan Low Speed Relay |
| 11 | - | - | - | Not Used |
| 12 | - | KR20E Cooling Fan Speed Control Relay | - | KR20D Cooling Fan High Speed Relay |
| 13 | - | KR20D Cooling Fan High Speed Relay | - | Cooling Fan High Speed Relay |
| 14 | - | - | - | Not Used |
| 15 | - | KR73 Ignition Main Relay | - | F5UA Fuse, F13UA Fuse, F16UA Fuse, F17UA Fuse, F18UA Fuse, F52UA Fuse, F53UA Fuse, F54UA Fuse, F57UA Fuse |
| 16 | - | KR25 Secondary Air Injection Pump Relay | - | G21 Secondary Air Injection Pump |
| 17 | - | KR5 Rear Defogger Relay | - | F28UA |
| Note: Relays listed below are non-serviceable Printed Circuit Board (PCB) relays and are internal to the block. | ||||
| - | - | KR3 Horn Relay | - | F51 Fuse |
| - | - | KR46 Front Fog Lamp Relay | - | F48UA Fuse |
| - | - | KR48 Headlamp High Beam Relay | - | F37UA, F38UA |
| - | - | KR11 Windshield Washer Pump Relay | - | F56UA |
| - | - | KR42L Daytime Running Lamp Relay ? Left | - | E4AC Park/Daytime Running Lamp ? Left, E4G Headlamp ? Left Low Beam |
| - | - | KR42R Daytime Running Lamp Relay ? Right | - | E4AD Park/Daytime Running Lamp ? Right, E4H Headlamp ? Right Low Beam |
| Note: Items listed below are diagnostic test points for PCB relays | ||||
| TP18 | - | TP18 | - | KR42R Daytime Running Lamp Relay ? Right |
| TP19 | - | TP19 | - | Not Used |
| TP24 | - | TP24 | - | Not Used |
| TP26 | - | TP26 | - | Not Used |