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Powertrain control module 2009 Buick Lucerne wire ground diagram location

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I don't know, but you may find your wiring diagram at this website.
Wiring4Cars Free Automotive Repair Guides and Wiring Diagrams

Posted on Apr 18, 2017

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Posted on Jan 02, 2017

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Buick lucerne starting disable throttle causes car not to crank


Drive by wire , electronic throttle control . What is it you would like to know Mr. Woods ? Can throttle cause car not to crank ? What year Buick ?
STARTING DISABLED SERVICE THROTTLE
Throttle Actuator Control (TAC) System Description for the 4.6L engine or Throttle Actuator Control (TAC) System Description for the 3.8L engine.

Purpose
The throttle actuator control (TAC) system delivers improved throttle response and greater reliability and eliminates the need for mechanical cable. The TAC system performs the following functions:
• Accelerator pedal position (APP) sensing
• Throttle positioning to meet driver and engine demands
• Throttle position sensing
• Internal diagnostics
• Cruise control functions
• Manage TAC electrical power consumption
The TAC system includes the following components:
• The APP sensors
• The throttle body assembly
• The powertrain control module (PCM)

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2009 buick lucerne washer pump not working changed pump and fuses are good


Before changing the pump did you test for B+ voltage at the pump and check the ground circuit . Jump B+ voltage to see if it runs ? Does it have the heated washer system ? How about the washer relay , did you check it ?
With the ignition in the ON position, accessory voltage is supplied through the 25A WPR fuse to the WIPER relay, the WIPER HI relay and the WSH relay that are all located in the under hood fuse block.

Dec 19, 2016 | 2009 Buick Lucerne

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Missing variable control voltage on the blower fan control module on a 2008 Buick lucerne


What are you using to test this control signal ? Were you on right wire ?
Blower Motor Control Processor The blower motor control processor is an interface between the HVAC control module and the blower motor. The blower motor speed control, battery positive voltage and ground circuits enable the control processor to operate. The HVAC control module provides a pulse width modulation (PWM) signal to the control processor in order to command the blower motor speed. The processor supplies 12 volts to the blower motor through the blower motor voltage supply circuit. The control processor uses the blower motor ground as a low side control to adjust the blower motor speed.

Chevy Trailblazer EXT Blower Motor Won Turn Off The blower motor in this video don't shut off , but he show's how to test the PWM signal right !
Your blower motor control module is probably bad , or HVAC control panel is bad , or a wiring problem !

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2005 chef Equinox brake light wiring diagram


http://bbbind.com/free_tsb.html free wiring diagrams !
Stop Lamps
The 15A BRAKE fuse located in the fuse block - underhood, supplies battery positive voltage to the normally open stop lamp switch. When the driver presses the brake pedal, the switch contacts close and battery positive voltage is supplied to both left and right stop lamp assemblies, the center high mounted stop lamp (CHMSL), the powertrain control module (PCM), and the throttle actuator control (TAC) module. The stop lamps are grounded at G401 and G403. The CHMSL is grounded at G301.

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1 Answer

2008 Buick Lucerne V8.Where are the ECM and PCM located?


Engine Control Module (ECM) (LD8/L37)
Front left side of the engine compartment, inside the air cleaner housing.
Transmission Control Module (TCM) (LD8/L37)
At the left rear of the engine compartment, on the strut tower
They call it a PCM when TCM an ECM are all in one module. You have ECM an TCM

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Where is the pcm on a 1999 ford taurus


The PCM is located behind the engine on the passenger side of the car, it is in a slot in the fire wall behind the cowl cover. here is Fords instructions for replacing it.Powertrain Control Module (PCM)
Removal

Disconnect battery ground cable (14301) . Refer to Section 14-01.

Remove cowl deflector.

Remove screw securing the ground cable of the engine control sensor wiring (12A581) to the dash panel (01610) .

Loosen engine control sensor wiring to PCM connector retainer bolt.

Remove engine control sensor wiring from PCM (12A650) .

Remove retaining nuts and powertrain control module insulator from dash panel .

Remove powertrain control module .

Installation

Follow removal procedure in reverse order.

Tighten insulator retaining nuts to 8-12 Nm (71-106 lb-in).

Tighten engine control sensor wiring retainer bolt to 3.7 Nm (33 lb-in).

Tighten engine control sensor wiring ground retaining screw securely.




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Dec 28, 2010 | 1999 Ford Taurus

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