Buick LaCrosse CX 2007 - 2007 ELECTRICAL Fuses & Circuit Breakers - LaCrosse

Buick LaCrosse CX 2007 - IDENTIFICATION

CAUTION:

When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See PROGRAMMING & SETUP article in GENERAL INFORMATION before disconnecting battery.

Buick LaCrosse CX 2007 - FUSIBLE LINKS

To identify and/or repair fusible links, see Fig. 1.

Fig. 1: Buick LaCrosse CX 2007 - Component Locations - Repairing Fusible Links

Buick LaCrosse CX 2007 - INSTRUMENT PANEL FUSE BLOCK

NOTE:

Instrument panel fuse block is located on right side of instrument panel behind access panel.

Fig. 2: Buick LaCrosse CX 2007 - Component Locations - Identifying Instrument Panel Fuse Box Components

Buick LaCrosse CX 2007 Fuse Block - I/P

Device	Rating	Description
CHMSL/BKUP Fuse	15A	Body Control Module (BCM)
CLSTR Fuse	10A	Instrument Panel Cluster (IPC)
CNSTR Fuse	10A	Evaporative Emission (EVAP) Canister Vent Solenoid
CRUISE Fuse	2A	Voice Recorder/Cruise Switch Assembly
DR/LCK TRUNK Fuse	15A	Body Control Module (BCM)
HAZRD Fuse	20A	Body Control Module (BCM)
HTD/MIR Fuse	10A	Outside Rearview Mirror Motor - Driver and Outside Rearview Mirror Motor - Passenger
HTD/SEAT Fuse	20A	Heated Seat Relay - Driver (KA1) and Heated Seat Relay - Front Passenger (KA1)
HVAC Fuse	10A	HVAC Control Module
INT/ILLUM Fuse	10A	Body Control Module (BCM)
ONSTAR/ALDL Fuse	10A	Vehicle Communication Interface Module (VCIM) (UE1) and Data Link Connector (DLC)
PRK/LAMP Fuse	10A	PK LP Relay
PRK/LAMP Relay	-	Marker Lamp - LF, Marker Lamp - LR, Marker Lamp - RF, Marker Lamp - RR, Park/Turn Signal Lamp - LF, Park/Turn Signal Lamp - RF, Tail Lamp - Left - Lower, Tail Lamp - Left - Upper, Tail Lamp - Right - Lower, Tail Lamp - Right - Upper, Tail/Stop and Turn Signal Lamp - Left, Tail/Stop and Turn Signal Lamp - Right, License Lamp - Left, and License Lamp - Right
PRK/SWITCH Fuse	5A	Park Switch
PWR/MIR Fuse	10A	Outside Rearview Mirror Switch
PWR/SEAT Circuit Breaker	25A	Seat Adjuster Switch - Driver (AG1), Seat Adjuster Switch - Passenger (AG2), and Seat Lumbar Switch - Driver (AL9)
PWR/WNDW Circuit Breaker	25A	Window Switch - Driver, and Window Switch - Front Passenger
RAP Relay	-	PRK/SWITCH, S/ROOF Fuses and PWR/WNDW Circuit Breaker
R/DEFOG Relay	-	HTD/MIR Fuse and Rear Window Defogger Grid
RDO/AMP Fuse	25A	Radio and Audio Amplifier (U88)
RFA/MOD Fuse	10A	Digital Radio Receiver (U2K), Remote Control Door Lock Receiver (RCDLR), and Inflatable Restraint Front Passenger Presence System (PPS) Module
S/ROOF Fuse	20A	Inside Rearview Mirror and Sunroof Motor/Actuator (CF5)
STR/WHL/ILLUM Fuse	2A	Steering Wheel Controls - Left (UK3), Steering Wheel Controls - Right (UK3), Voice Recorder/Cruise Switch Assembly, and Cruise Control Switch

Buick LaCrosse CX 2007 - UNDERHOOD FUSE BLOCK

NOTE:

Underhood electrical center is located on right side of engine compartment, mounted to strut tower.

Fig. 3: Buick LaCrosse CX 2007 - Component Locations - Identifying Underhood Fuse Block Components

Buick LaCrosse CX 2007 Fuse Block - Underhood

No.	Device	Rating	Description
1	LF HI BEAM Fuse	10A	Headlamp - High Beam - Left
2	RF HI BEAM Fuse	10A	Headlamp - High Beam - Right
3	LF LO BEAM Fuse	10A	Headlamp - Low Beam - Left
4	RF LO BEAM Fuse	10A	Headlamp - Low Beam - Right
5	WIPER/WS Fuse	25A	WIPER Relay
6	WASHER/RVC Fuse	15A	Body Control Module (BCM)
7	FOG LPS Fuse	15A	FOG LP Relay
8	TCM Fuse	15A	Transmission Control Module (TCM)
9	SIR Fuse	10A	Inflatable Restraint PASSENGER AIR BAG ON/OFF Indicator, Inflatable Restraint Front Passenger Presence System (PPS) Module, and Inflatable Restraint Sensing and Diagnostic Module (SDM)
10	AUX PWR Fuse	25A	Auxiliary Power Outlet and Cigar Lighter
11	HORN Fuse	15A	HORN Relay
12	EMISSION Fuse	10A	Evaporative Emission (EVAP) Canister Vent Solenoid Valve (L26), Heated Oxygen Sensor (HO2S) 2 (LY7), Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor, Secondary Air Injection (AIR) Pump Relay (NU3), and Secondary Air Injection (AIR) Solenoid Relay (NU3)
13	A/C CLUTCH Fuse	10A	A/C COMP Relay
14	02 SSR Fuse	15A	Camshaft Position (CMP) Actuator Solenoid Intake Bank 1 (LY7), Camshaft Position (CMP) Actuator Solenoid Intake Bank 2 (LY7), Camshaft Position (CMP) Actuator Solenoid Exhaust Bank 1 (LY7), Camshaft Position (CMP) Actuator Solenoid Exhaust Bank 2 (LY7), Evaporative Emissions (EVAP) Canister Purge Solenoid Valve (LY7), Heated Oxygen Sensor (HO2S) 1, and Heated Oxygen Sensor (HO2S) 2 (L26)
15	PCM Fuse	10A	CRANK Relay, Engine Control Module (ECM) (LY7), and Powertrain Control Module (PCM) (L26)
16	PCM/ETC Fuse	15A	Engine Control Module (ECM) (LY7) and Powertrain Control Module (PCM) (L26)
17	ETC Fuse	15A	Engine Control Module (LY7) and Throttle Actuator Control (TAC) Module (L26)
18	DISPLAY Fuse	10A	Air Temperature Sensor Inside (CJ2), Electronic Compass Module, HVAC Control Module, Rear Object Sensor Control Module (UD7), and Voice Recorder/Cruise Assembly Switch
19	ABS SOL Fuse	25A	Electronic Brake Control Module (EBCM) (JL9)
20	FUEL INJ Fuse	15A	Fuel Injector 1, Fuel Injector 2 (L26), Fuel Injector 3, Fuel Injector 4 (L26), Fuel Injector 5, Fuel Injector 6 (L26), Ignition Coil 1 (LY7), Ignition Coil 3 (LY7), and Ignition Coil 5 (LY7)
21	TRANS SOL Fuse	10A	1-2 Shift Solenoid (1-2 SS) Valve, 2-3 Shift Solenoid (2-3 SS) Valve, Torque Converter Clutch (TCC) Solenoid Valve, and Transmission Control Module (TCM) (LY7)
22	FUEL PP	15A	FUEL PP Relay
23	ABS Fuse	10A	Electronic Brake Control Module (EBCM) (JL9), Steering Angle Sensor (JL4), and Yaw and Lateral Acceleration Sensor (JL4)
24	ELEK IGN Fuse	15A	Fuel Injector 2 (LY7), Fuel Injector 4 (LY7), Fuel Injector 6 (LY7), Ignition Coil 2 (LY7), Ignition Coil 4 (LY7), Ignition Coil 6 (LY7), and Ignition Control Module (ICM) (L26),
25	AIR PUMP Fuse	50A	Secondary Air Injection (AIR) Pump Relay (NU3)
26	BATT MAIN 1 Fuse	40A	CHMSL/BKUP, CLSTR, CNSTR, HVAC, INT/ILLUM, PRK/LAMP, RDO/AMP, RFA/MOD, and ONSTAR/ALDL Fuses
27	BATT MAIN 2 Fuse	50A	DR/LCK TRUNK, HAZRD, HTD/SEAT, PRK/SWITCH, PWR/MIR, and S/ROOF Fuses, PWR/SEAT and PWR/WNDW Circuit Breakers, and RAP Relay
28	BATT MAIN 3 Fuse	40A	R/ DEFOG Relay
29	FAN 1 Fuse	30A	FAN 1 Relay
30	BATT MAIN 4 Fuse	30A	Blower Motor Control Processor
31	ABS MTR Fuse	40A	Electronic Brake Control Module (EBCM) (JL9)
32	FAN 2 Fuse	30A	FAN 2 and FAN 3 Relays
33	STARTER Fuse	40A	CRANK Relay
34	HI BEAM Relay	-	LF HI BEAM and RF HI BEAM Fuses
35	HDM BEAM Module	-	LF LO BEAM and RF LO BEAM Fuses
36	FOG LP Relay	-	Fog Lamp - LF and Fog Lamp - RF
37	IGN 1 Relay	-	ABS, TRANS SOL, PCM, SIR and DISPLAY Fuses, and A/C COMP Relay
38	A/C COMP Relay	-	A/C Compressor Clutch and A/C CLU Diode
39	HORN Relay	-	Horn Assembly
40	P/TRAIN Relay	-	ELEK IGN, EMISSION, ETC, FUEL INJ, and O2 SSR Fuses
41	FUEL PP Relay	-	Fuel Pump and Sender Assembly
42	FAN 1 Relay	-	Cooling Fan - Left
43	FAN 3 Relay	-	Cooling Fan - Right
44	WIPER HI Relay	-	Windshield Wiper Motor
45	WIPER Relay	-	WIPER HI Relay
46	FAN 2 Relay	-	Cooling Fan - Right
48	CRANK Relay	-	Starter
49	SPARE Fuse	10A	-
50	SPARE Fuse	15A	-
51	SPARE Fuse	25A	-
52-54	Empty	-	-
55	FUSE PULLER	-	-