Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBUICK2013REGAL TURBO PREMIUM, STANDARD TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSELECTRICAL COMPONENT LOCATIONSCOMPONENT LOCATIONS - ELECTRICAL CENTER IDENTIFICATION VIEWSELECTRICAL CENTER IDENTIFICATION VIEWSX50A FUSE BLOCK - UNDERHOOD LABEL (WITH HP6 OR NJ1)
2013 Buick Regal Turbo Premium, Standard Trans
X50A Fuse Block - Underhood Label (with HP6 or NJ1)
2013 Buick Regal Turbo Premium, Standard TransSECTION X50A Fuse Block - Underhood Label (with HP6 or NJ1)
X50A FUSE BLOCK - UNDERHOOD FUSE AND RELAY IDENTIFICATION LEGEND (HP6 OR NJ1)
| No. | Device Label Name | Fuse And Relay Description | Rating | Circuits |
|---|---|---|---|---|
| Fuses | ||||
| F1UA: 1 | F1UA: 1 | F1UA: F1UA Fuse | F1UA: 15A | F1UA: K71 Transmission Control Module (MDK), Q8 Control Solenoid Valve Assembly (MH8, MHH or MHK) |
| F2UA: 2 | F2UA: 2 | F2UA: F2UA Fuse | F2UA: 15A | F2UA: K20 Engine Control Module |
| F3UA: 3 | F3UA: 3 | F3UA: F3UA Fuse | F3UA: - | F3UA: Not Occupied |
| F4UA: 4 | F4UA: 4 | F4UA: F4UA Fuse | F4UA: - | F4UA: Not Occupied |
| F5UA: 5 | F5UA: 5 | F5UA: F5UA Fuse | F5UA: 15A | F5UA: K20 Engine Control Module, K71 Transmission Control Module (MDK), Q8 Control Solenoid Valve Assembly (MH8, MHH, or MHK) |
| F6UA: 6 | F6UA: 6 | F6UA: F6UA Fuse | F6UA: 30A | F6UA: KR12B Windshield Wiper Relay, KR12C Windshield Wiper Speed Control Relay |
| F7UA: 7 | F7UA: 7 | F7UA: F7UA Fuse | F7UA: 7.5A | F7UA: K59 Starter/Generator Control Module (LUK) |
| F8UA: 8 | F8UA: 8 | F8UA: F8UA Fuse | F8UA: 15A | F8UA: Not Occupied |
| F9UA: 9 | F9UA: 9 | F9UA: F9UA Fuse | F9UA: 15A | F9UA: K20 Engine Control Module, T8A Ignition Coil 1, T8B Ignition Coil 2, T8C Ignition Coil 3, T8D Ignition Coil 4 |
| F10UA: 10 | F10UA: 10 | F10UA: F10UA Fuse | F10UA: 20A | F10UA: K20 Engine Control Module |
| F11UA: 11 | F11UA: 11 | F11UA: F11UA Fuse | F11UA: - | F11UA: Not Occupied |
| F12UA: 12 | F12UA: 12 | F12UA: F12UA Fuse | F12UA: 30A | F12UA: KR27 Starter Relay |
| F13UA: 13 | F13UA: 13 | F13UA: F13UA Fuse | F13UA: 7.5A | F13UA: K27 Fuel Pump Control Module |
| F14UA: 14 | F14UA: 14 | F14UA: F14UA Fuse | F14UA: 15A | F14UA: Not Occupied |
| F15UA: 15 | F15UA: 15 | F15UA: F15UA Fuse | F15UA: - | F15UA: Not Occupied |
| F16UA: 16 | F16UA: 16 | F16UA: F16UA Fuse | F16UA: 7.5A | F16UA: K32 Steering Wheel Heating Control Module (UVD) |
| F17UA: 17 | F17UA: 17 | F17UA: F17UA Fuse | F17UA: 5A | F17UA: K36 Inflatable Restraint Sensing and Diagnostic Module |
| F18UA: 18 | F18UA: 18 | F18UA: F18UA Fuse | F18UA: 15A | F18UA: K59 Starter/Generator Control Module (LUK) |
| F19UA: 19 | F19UA: 19 | F19UA: F19UA Fuse | F19UA: - | F19UA: Not Occupied |
| F20UA: 20 | F20UA: 20 | F20UA: F20UA Fuse | F20UA: - | F20UA: Not Occupied |
| F21UA: 21 | F21UA: 21 | F21UA: F21UA Fuse | F21UA: 30A | F21UA: S79LR Window Switch - Left Rear, S79RR Window Switch - Right Rear |
| F22UA: 22 | F22UA: 22 | F22UA: F22UA Fuse | F22UA: 30A | F22UA: K17 Electronic Brake Control Module |
| F23UA: 23 | F23UA: 23 | F23UA: F23UA Fuse | F23UA: 10A | F23UA: K43 Power Steering Control Module (NXC) |
| F24UA: 24 | F24UA: 24 | F24UA: F24UA Fuse | F24UA: 30A | F24UA: M74D Window Motor - Driver, M74P Window Motor - Passenger |
| F25UA: 25 | F25UA: 25 | F25UA: F25UA Fuse | F25UA: 30A | F25UA: T1 Accessory DC/AC Power Inverter Module (KI6) |
| F26UA: 26 | F26UA: 26 | F26UA: F26UA Fuse | F26UA: 60A | F26UA: K17 Electronic Brake Control Module |
| F27UA: 27 | F27UA: 27 | F27UA: F27UA Fuse | F27UA: 30A | F27UA: K83 Parking Brake Control Module |
| F28UA: 28 | F28UA: 28 | F28UA: F28UA Fuse | F28UA: 40A | F28UA: R14L Rear Window Defogger Noise Filter - Left |
| F29UA: 29 | F29UA: 29 | F29UA: F29UA Fuse | F29UA: 15A | F29UA: S65D Seat Lumbar Support Switch - Driver (APG) |
| F30UA: 30 | F30UA: 30 | F30UA: F30UA Fuse | F30UA: 15A | F30UA: S65P Seat Lumbar Support Switch - Passenger (APH) |
| F31UA: 31 | F31UA: 31 | F31UA: F31UA Fuse | F31UA: 10A | F31UA: Not Occupied |
| F32UA: 32 | F32UA: 32 | F32UA: F32UA Fuse | F32UA: 20A | F32UA: A10 Inside Rearview Mirror, E5A Backup Lamp - Left, E5B Backup Lamp - Right, E5AM Stop/Turn Signal Lamp - Left, K9 Body Control Module, S2 Transmission Manual Shift Switch |
| F33UA: 33 | F33UA: 33 | F33UA: F33UA Fuse | F33UA: 25A | F33UA: K29 Seat Heating Control Module |
| F34UA: 34 | F34UA: 34 | F34UA: F34UA Fuse | F34UA: 25A | F34UA: M69 Sunroof Motor (CF5) |
| F35UA: 35 | F35UA: 35 | F35UA: F35UA Fuse | F35UA: 30A | F35UA: T3 Audio Amplifier (UQA) |
| F36UA: 36 | F36UA: 36 | F36UA: F36UA Fuse | F36UA: - | F36UA: Not Occupied |
| F37UA: 37 | F37UA: 37 | F37UA: F37UA Fuse | F37UA: 10A | F37UA: E4F Headlamp - Right High Beam (T4A), M28R High Beam Solenoid Actuator - Right (T4F) |
| F38UA: 38 | F38UA: 38 | F38UA: F38UA Fuse | F38UA: 10A | F38UA: E4E Headlamp - Left High Beam (T4A) , M28L High Beam Solenoid Actuator - Left (T4F) |
| F39UA: 39 | F39UA: 39 | F39UA: F39UA Fuse | F39UA: - | F39UA: Not Occupied |
| F40UA: 40 | F40UA: 40 | F40UA: F40UA Fuse | F40UA: - | F40UA: Not Occupied |
| F41UA: 41 | F41UA: 41 | F41UA: F41UA Fuse | F41UA: 30A | F41UA: KR14 Brake Booster Pump Motor Relay (LUK) |
| F42UA: 42 | F42UA: 42 | F42UA: F42UA Fuse | F42UA: 30A | F42UA: Not Occupied |
| F43UA: 43 | F43UA: 43 | F43UA: F43UA Fuse | F43UA: 60A | F43UA: Not Occupied |
| F44UA: 44 | F44UA: 44 | F44UA: F44UA Fuse | F44UA: 25A | F44UA: KR86 Transmission Fluid Pump Relay - Auxiliary (HP6) |
| F45UA: 45 | F45UA: 45 | F45UA: F45UA Fuse | F45UA: 60A | F45UA: G10L Cooling Fan Motor - Left (LUK), G10R Cooling Fan Motor - Right (LUK), KR20C Cooling Fan Low Speed Relay (LUK), KR20J Cooling Fan Left High Speed Relay (LUK) |
| F46UA: 46 | F46UA: 46 | F46UA: F46UA Fuse | F46UA: 10A | F46UA: KR20C Cooling Fan Low Speed Relay (LUK), KR20E Cooling Fan Speed Control Relay, KR26 Secondary Air Injection Solenoid Valve Relay (NU6) |
| F47UA: 47 | F47UA: 47 | F47UA: F47UA Fuse | F47UA: 10A | F47UA: Not Occupied |
| F48UA: 48 | F48UA: 48 | F48UA: F48UA Fuse | F48UA: 15A | F48UA: E29LF Fog Lamp - Left Front, E29RF Fog Lamp - Right Front |
| F49UA: 49 | F49UA: 49 | F49UA: F49UA Fuse | F49UA: 15A | F49UA: T7R Headlamp Ballast - Right (T4F) |
| F50UA: 50 | F50UA: 50 | F50UA: F50UA Fuse | F50UA: 15A | F50UA: T7L Headlamp Ballast - Left (T4F) |
| F51UA: 51 | F51UA: 51 | F51UA: F51UA Fuse | F51UA: 15 A | F51UA: P13 Horn Assembly |
| F52UA: 52 | F52UA: 52 | F52UA: F52UA Fuse | F52UA: 5A | F52UA: P16 Instrument Cluster |
| F53UA: 53 | F53UA: 53 | F53UA: F53UA Fuse | F53UA: 10A | F53UA: A10 Inside Rearview Mirror |
| F54UA: 54 | F54UA: 54 | F54UA: F54UA Fuse | F54UA: 5A | F54UA: Not Occupied |
| F55UA: 55 | F55UA: 55 | F55UA: F55UA Fuse | F55UA: 7.5A | F55UA: S79D Window Switch - Driver, S52 Outside Rearview Mirror Switch |
| F56UA: 56 | F56UA: 56 | F56UA: F56UA Fuse | F56UA: 15A | F56UA: G24 Windshield Washer Pump |
| F57UA: 57 | F57UA: 57 | F57UA: F57UA Fuse | F57UA: 15A | F57UA: Not Occupied |
| F58UA: 58 | F58UA: 58 | F58UA: F58UA Fuse | F58UA: - | F58UA: Not Occupied |
| F59UA: 59 | F59UA: 59 | F59UA: F59UA Fuse | F59UA: 30A | F59UA: G21 Secondary Air Injection Pump (NU6), KR25 Secondary Air Injection Pump Relay (NU6) |
| F60UA: 60 | F60UA: 60 | F60UA: F60UA Fuse | F60UA: 7.5A | F60UA: E17D Outside Rearview Mirror Glass - Driver, E17P Outside Rearview Mirror Glass - Passenger |
| F61UA: 61 | F61UA: 61 | F61UA: F61UA Fuse | F61UA: - | F61UA: Not Occupied |
| F62UA: 62 | F62UA: 62 | F62UA: F62UA Fuse | F62UA: 10A | F62UA: Q13 Evaporative Emission Vent Solenoid Valve |
| F63UA: 63 | F63UA: 63 | F63UA: F63UA Fuse | F63UA: - | F63UA: Not Occupied |
| F64UA: 64 | F64UA: 64 | F64UA: F64UA Fuse | F64UA: - | F64UA: Not Occupied |
| F65UA: 65 | F65UA: 65 | F65UA: F65UA Fuse | F65UA: - | F65UA: Not Occupied |
| F66UA: 66 | F66UA: 66 | F66UA: F66UA Fuse | F66UA: - | F66UA: Not Occupied |
| F67UA: 67 | F67UA: 67 | F67UA: F67UA Fuse | F67UA: 20A | F67UA: K27 Fuel Pump Control Module |
| F68UA: 68 | F68UA: 68 | F68UA: F68UA Fuse | F68UA: - | F68UA: Not Occupied |
| F69UA: 69 | F69UA: 69 | F69UA: F69UA Fuse | F69UA: 5A | F69UA: K9 Body Control Module, S30 Headlamp Switch, S70L Steering Wheel Controls Switch - Left, S70R Steering Wheel Controls Switch - Right |
| F70UA: 70 | F70UA: 70 | F70UA: F70UA Fuse | F70UA: 5A | F70UA: Not Occupied |
| F71UA: 71 | F71UA: 71 | F71UA: F71UA Fuse | F71UA: 5A | F71UA: Not Occupied |
| F72UB: 72 | F72UB: - | F72UB: F72UB Fuse | F72UB: - | F72UB: Not Occupied |
| F73UB: 73 | F73UB: - | F73UB: F73UB Fuse | F73UB: 175A | F73UB: K59 Starter/Generator Control Module (NP6) |
| F74UB: 74 | F74UB: - | F74UB: F74UB Fuse | F74UB: 80A | F74UB: K43 Power Steering Control Module (NJ7) |
| F75UB: 75 | F75UB: - | F75UB: F75UB Fuse | F75UB: - | F75UB: Not Occupied |
| Relays | ||||
| : 1 | : 1 | : - | : - | : Not Occupied |
| KR27: 2 | KR27: 2 | KR27: KR27 Starter Relay | KR27: - | KR27: M64 Starter Motor |
| : 3 | : 3 | : - | : - | : Not Occupied |
| KR12C: 4 | KR12C: 4 | KR12C: KR12C Windshield Wiper Speed Control Relay | KR12C: - | KR12C: M75 Windshield Wiper Motor |
| KR12B: 5 | KR12B: 5 | KR12B: KR12B Windshield Wiper Relay | KR12B: - | KR12B: M75 Windshield Wiper Motor |
| KR26: 6 | KR26: 6 | KR26: KR26 Secondary Air Injection Solenoid Valve Relay | KR26: - | KR26: Q29 Secondary Air Injection Solenoid Valve (NU6) |
| KR75: 7 | KR75: 7 | KR75: KR75 Engine Controls Ignition Relay | KR75: - | KR75: F9UA, F10UA, F11UA, F46UA, F47UA Fuses, KR25 Secondary Air Injection Pump Relay (NU6) |
| : 8 | : 8 | : - | : - | : Not Occupied |
| KR20K: 9 | KR20K: 9 | KR20K: KR20K Cooling Fan Right High Speed Relay | KR20K: - | KR20K: G10R Cooling Fan Motor - Right (LUK) |
| KR20C: 10 | KR20C: 10 | KR20C: KR20C Cooling Fan Low Speed Relay | KR20C: - | KR20C: G10L Cooling Fan Motor - Left (LUK), G10R Cooling Fan Motor - Right (LUK) |
| KR86: 11 | KR86: 11 | KR86: KR86 Transmission Fluid Pump Relay - Auxiliary | KR86: - | KR86: G5 Transmission Fluid Pump - Auxiliary (HP6) |
| : 12 | : 12 | : - | : - | : Not Occupied |
| KR20J: 13 | KR20J: 13 | KR20J: KR20J Cooling Fan Left High Speed Relay | KR20J: - | KR20J: G10L Cooling Fan Motor - Left (LUK) |
| KR49: 14 | KR49: 14 | KR49: KR49 Headlamp Low Beam Relay | KR49: - | KR49: F49UA (T4F), F50UA (T4F) Fuses |
| KR73: 15 | KR73: 15 | KR73: KR73 Ignition Main Relay | KR73: - | KR73: F5UA, F13UA, F16UA, F17UA, F18UA, F52UA, F53UA, F54UA, F57UA Fuses |
| KR25: 16 | KR25: 16 | KR25: KR25 Secondary Air Injection Pump Relay | KR25: - | KR25: G21 Secondary Air Injection Pump (NU6) |
| KR5: 17 | KR5: 17 | KR5: KR5 Rear Defogger Relay | KR5: - | KR5: E17D Outside Rearview Mirror Glass - Driver, E17P Outside Rearview Mirror Glass - Passenger, R14L Rear Window Defogger Noise Filter - Left |
|
NOTE:
Relays listed below are non-serviceable Printed Circuit Board (PCB) relays and are internal to the block. |
||||
| - | - | KR3 Horn Relay | - | F51UA Fuse |
| - | - | KR11 Windshield Washer Pump Relay | - | F56UA Fuse |
| - | - | KR46 Front Fog Lamp Relay | - | F48UA Fuse |
| - | - | KR48 Headlamp High Beam Relay | - | F37UA, F38UA Fuses |
| - | - | KR95B Rear Compartment Lid Unlatch Relay | - | M40 Rear Compartment Lid Latch, TP18 |
| - | - | KR97 Door Lock Relay | - | A23D Door Latch Assembly - Driver, A23LR Door Latch Assembly - Left Rear, A23P Door Latch Assembly - Passenger, A23RR Door Latch Assembly - Right Rear |
|
NOTE:
Item listed below is a Release Systems diagnostic test point. |
||||
| TP18: TP18 | TP18: - | TP18: TP18 | TP18: - | TP18: KR95B Rear Compartment Lid Unlatch Relay |
|
NOTE:
Items listed below are diagnostic testing points. |
||||
| TP19: TP19 | TP19: - | TP19: TP19 | TP19: - | TP19: Not Occupied |
| TP24: TP24 | TP24: - | TP24: TP24 | TP24: - | TP24: Not Occupied |
| TP26: TP26 | TP26: - | TP26: TP26 | TP26: - | TP26: Not Occupied |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.