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Door & Component Operation Descriptions (02)

sperry

Silent Avalanche RIP
SM 2007
SM 2006
SM 2005
Full Member
Joined
Oct 22, 2003
Messages
13,160
Location
Seligman, AZ
Door Description

The hinges are welded to the door and to the body. There is no adjustment to this type of hinge. The replacement hinges bolt to the door and to the body side pillar. The replacement hinges are adjustable.

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Power Windows Description and Operation

Power Window System Components

The power window system consists of the following components:

    ■ LF power window master switch
    ■ RF power window switch
    ■ LR power window switch (4-door vehicles)
    ■ RR power window switch (4-door vehicles)
    ■ Window lockout switch (4-door vehicles)
    ■ Window up and window down relays in each of the passenger window switches
    ■ Reversible power window motors in each of the doors (circuit breaker protected).
    ■ PWR WDO CB 25A (fuse block) (System power for left and right windows 2-door vehicles. System power for LF and LR windows 4-door vehicles)
    ■ PWR WDO CB 25A (IP wiring harness junction block) (System power for RF and RR windows 4-door vehicles)

Power Window System Controls

The power window system will operate anytime the Retained Accessory Power (RAP) system is active or when the ignition switch is in the ACCY or ON position.

The LF power window master switch can control the up and down functions of all the windows in the vehicle. The passenger door power window switches can only control the up and down functions of the individual window. The power window master switch also contains a lockout switch (4 door vehicles). The lockout switch controls the power window master switch lockout signal circuit. When the lockout switch is in the OFF position, the power window master switch lockout signal circuit is complete and the passenger door power window switches function normally. When the lockout switch is in the ON position, the power window master switch lockout signal circuit is interrupted and the passenger door window switches cannot control the up and down functions of the power windows.

Power Window Motor Operation

A permanent magnet motor operates each of the power side windows. Each motor raises or lowers the glass when the motor receives voltage. The direction the motor turns depends on the polarity of the supply voltage. The power window switches control the polarity of the supply voltage. A built-in circuit breaker protects each motor. The circuit breaker opens when the switch is depressed for a extended period of time under the following conditions:

    ■ The window has an obstruction.
    ■ The window is fully open or fully closed.

The circuit breaker will reset automatically as the circuit breaker cools.

Driver Power Window Operation

The driver power window is unique from the passenger power windows in that it does not use window up and down relays. The driver power window is operated directly from the power window switch.

The normally closed contacts of the switch are connected to ground and the center pole is connected to the RAP fuse supply voltage circuit. By placing the left power window switch in the down position, voltage is applied to the power window motor left front down circuit and to the power window motor. The other side of the power window motor is connected to ground through the normally closed contacts of the left power window switch through the power window motor left front up circuit and drives the window down.

By placing the left power window switch in the up position the polarity of the motor is reversed and the motor drives the window up.

Passenger Power Window Operation

The passenger power window switches incorporate window up and down relays. The relay coil feed and supply sides are powered through the RAP fuse supply voltage circuit. The normally closed contacts of each relay is connected to ground. The load side of each of the relays are connected to either side of the power window motor through the power window up and down circuits. The up and down relay control circuits are connected to the normally closed contacts of the passenger window switch. These contacts are wired in series with the power window master switch, through the power window master switch up and down signal circuits and then to ground when the power window master is placed in the up or down position. This allows for the up and down operation of the passenger power window from the power window master switch. The center pole of the passenger power window switch is also connected to ground and will energize the relay when placed in the up or down position.

Express Down Operation

Vehicles equipped with the express down function incorporate an auto down module in the power window master switch. The auto down module senses the operation of the LF window switch and controls voltage and ground availability to the power window up and down circuits.

When the LF power window switch is held in the down position for more then 1 second, the auto down module supplies voltage to the power window down circuit continuously until the power window reaches the bottom of its travel. At this point, the auto down module senses an over current situation on the power window down circuit and interrupts the voltage supply. If the LF power window switch is actuated less then 1 second, the operation is the same except the power window down circuit will be interrupted when the switch is released.

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Edit: Character correction.
 
Power Door Locks Description and Operation

Door Lock System Components

The power door lock system consists of the following components:

    ■ LF door lock switch
    ■ RF door lock switch
    ■ Rear door lock switch (utilities only)
    ■ Door lock relay
    ■ Door unlock relay
    ■ Driver door unlock relay (uplevel vehicles)
    ■ Body Control Module (BCM)
    ■ Reversible door lock actuators in each of the doors
    ■ MIR/LOCK 3A fuse (switch supply voltage)
    ■ DR LOCK 20A fuse (relay supply voltage)
    ■ UNLOCK 15A fuse (unlock supply voltage)
    ■ LOCK 15A fuse (lock supply voltage)
    ■ UNLOCK JMPR (base vehicles)

Door Lock System Controls

The power door lock system can be controlled by any of the following:

    ■ A power door lock or unlock switch activation
    ■ A keyless entry transmission (uplevel vehicles)
    ■ An automatic door lock function
    ■ A delay lock function (utilities)

Driver and Passenger Door Lock Operation (Base Vehicles)

When any of the door lock switches are placed in the lock position, voltage is applied to the door lock control circuit and the lock relay winding. Since the other side of the lock relay winding is connected to ground, the relay is energized. This causes the contacts to close and complete the path from the DR LOCK fuse through the battery voltage circuit. Voltage is then applied through the LOCK fuse to the lock side of the door lock actuators. Since the other side of the all the door lock actuators are connected to the normally closed contacts of the unlock relay to ground , the doors lock.

The lock function can also be accomplished by the BCM supplying voltage to the door lock control circuit during a delay lock function (utilities only).

Driver and Passenger Door Lock Operation (Uplevel Vehicles)

When any of the door lock switches are placed in the lock position, voltage is applied to the door lock control circuit and the lock relay winding. Since the other side of the lock relay winding is connected to ground, the relay is energized. This causes the contacts to close and complete the path from the DR LOCK fuse through the battery voltage circuit. Voltage is then applied through the LOCK fuse to the lock side of the door lock actuators. Since the other side of the passenger door lock actuator(s) are connected to the normally closed contacts of the unlock relay to ground and the driver door lock actuator is connected to the normally closed contacts of the driver door unlock relay to ground, the doors lock.

The lock function can also be accomplished by the BCM supplying voltage to the door lock control circuit by any of the following:

    ■ A keyless entry lock transmission
    ■ An automatic door lock function (if programmed)
    ■ A delay lock function (utilities only)

Driver and Passenger Door Unlock Operation (Base Vehicles)

When any of the door lock switches are placed in the unlock position, voltage is applied to the door unlock signal circuit and the BCM. When the BCM senses the voltage signal, it grounds the door unlock control circuit and the unlock relay winding. Since the other side of the unlock relay winding is connected to battery voltage, the relay is energized. This causes the contacts to close and complete the path from the DR LOCK fuse through the battery voltage circuit. Voltage is then applied through the UNLOCK fuse to the unlock side of the door lock actuators. Since the other side of the door lock actuators are connected to the normally closed contacts of the lock relay to ground, the doors unlock.

Passenger Door Unlock Operation (Uplevel Vehicles)

When any of the door lock switches are placed in the unlock position, voltage is applied to the door unlock control circuit and the unlock relay winding and the BCM. Since the other side of the unlock relay winding is connected to ground, the relay is energized. This causes the contacts to close and complete the path from the DR LOCK fuse through the battery voltage circuit. Voltage is then applied through the UNLOCK fuse to the unlock side of the door lock actuators. Since the other side of the door lock actuators are connected to the normally closed contacts of the lock relay to ground, the doors unlock.

The unlock function can also be accomplished by the BCM supplying voltage to the door lock control circuit during any of the following:

    ■ A keyless entry unlock transmission
    ■ An automatic door unlock function (if programmed)

Driver Door Unlock Operation (Uplevel Vehicles)

The driver door unlock control circuit uses a dedicated driver door unlock relay. This is done so that the driver door may be unlocked by itself using a keyless entry unlock transmission or with an automatic door unlock function (if programmed). The driver door unlock relay differs slightly from the unlock relay in that the primary side of the relay is connected to the DR LOCK fuse and the door unlock control circuit is pulled to ground by the BCM to energize the relay.

When any of the door lock switches are placed in the unlock position, a voltage is applied to the unlock relay and to the BCM. When the BCM senses the voltage signal, it grounds the driver door unlock control circuit. Since the other side of the driver door unlock relay winding is connected to the DR LOCK fuse through the battery voltage circuit, the relay is energized. This causes the contacts to close and complete the path from the DR LOCK fuse through the battery voltage circuit. Voltage is then applied to the unlock side of the driver door lock actuator. Since the other side of the driver door lock actuator is connected to the normally closed contacts of the lock relay to ground, the driver door unlocks.

The unlock function can also be accomplished by the BCM supplying voltage to the door lock control circuit during any of the following:

    ■ A keyless entry unlock transmission
    ■ An automatic door unlock function (if programmed)

Delay Locking (Utility Vehicles)

This feature allows the operator to lock all the doors from the rear lock switch. The rear cargo doors have contact plates that complete the power door lock and unlock fuse supply circuits (among others) when the cargo doors are closed, and interrupt these circuits when the cargo doors are open. When a lock function occurs and the BCM senses an active state on the lift gate ajar switch signal circuit (door open), the driver and passengers doors will lock as described, and the BCM continues to monitor the lift gate ajar switch signal circuit . When the BCM senses an inactive state (door closed), the BCM will cycle the door lock relay again after approximately 5 seconds to perform another lock function, thus locking the cargo door.

Lockout Prevention

This feature prevents the locking of the driver door if the ignition key is left in the ignition lock cylinder. If a lock function occurs from any door lock switch and the BCM senses an active state on either the left front door latch signal, secondary door latch switch signal and/or the lift gate ajar switch signal circuits and the key in ignition switch signal circuit is in the yes state, the BCM will cycle the door lock relay to lock the doors and then cycle the driver door unlock relay to unlock the driver door.

Programmable Automatic Door Locks

The automatic door lock feature can be programmed to control the door lock system. The automatic door lock feature is factory programmed to have all doors lock and unlock.

When the automatic door lock feature is programmed to control the door lock system, the BCM will lock the vehicle doors if the following inputs are true:

    ■ Ignition 1 input is active.
    ■ All door jamb switch inputs are inactive.
    ■ Cargo door or lift gate/lift glass ajar inputs are inactive.
    ■ Transmission is shifted out of park

This automatic door lock function will only occur once per ignition cycle unless, a door jamb switch input changes state to active and back to inactive. Then the BCM will lock all doors again.

Once the automatic door lock feature has locked the doors, the BCM will then unlock all the doors when the transmission is shifted into park.

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Edit: Character Correction.
 
Outside Mirror Description and Operation

Power Mirror System without Memory

Power Mirror System Components

The power mirror system consists of the following components:

    ■ Power mirror switch
    ■ Selector switch
    ■ Left outside power mirror
    ■ Right outside power mirror
    ■ MIR/LOCK 3A fuse

Each of the outside power mirrors contains 2 reversible motors. The vertical motor operates the up and down directions and the horizontal motor operates the left and right directions. Each of the power mirror motors are circuit breaker protected.

Power Mirror System Controls

The power mirror switch incorporates a mirror select switch and a 4 position mirror direction switch. The mirror select switch allows the operator to select the mirror to be moved by rotating counterclockwise to the L position (left outside power mirror) or rotating clockwise to the R position (right outside power mirror). The mirror direction switch is a 4 position switch that allows the operator to move the selected mirror up, down, left or right.

Power Mirror System Operation

The power mirror switch receives power through the battery supply voltage circuit and the MIR/LOCK fuse. The power mirror switch also receives a constant ground. The 4 positions of the direction switch have dual switch contacts. Each of the contacts are connected to opposing sides of the appropriate power mirror motors through the selector switch. The selector switch interrupts or completes these circuits depending on the position of the selector switch (L or R). If the selector switch is placed in the L position and the up switch is depressed, battery voltage will be supplied to the left outside power mirror vertical motor through the left mirror motor up direction circuit and return to the power mirror switch through the mirror motor common circuit then to ground and the mirror will move up. If the down switch is depressed, the common circuit supplies battery voltage and the left mirror motor up direction circuit completes the path to the power mirror switch then to ground and the mirror will move down. The remainder of the mirror functions operate in the same manner as described above. The thing to remember is, that by placing the power mirror switch in opposing positions (left/right or up/down) will reverse the polarity of the mirror motor, utilizing the same circuits and the power mirror will move accordingly.

Power Mirror System with Memory

Power Mirror System Components

The power mirror system consists of the following components:

    ■ Power mirror switch.
    ■ Mirror selector switch.
    ■ Memory switch
    ■ Left outside power mirror with position sensors.
    ■ Right outside power mirror with position sensors.
    ■ Mirror Mirror Module (MMM)
    ■ MIR/LOCK 3A fuse

Power Mirror System Controls

The power mirror switch incorporates a mirror select switch and a 4 position mirror direction switch. The mirror select switch allows the operator to select the mirror to be moved by rotating counterclockwise to the L position (left outside power mirror) or rotating clockwise to the R position (right outside power mirror). The mirror direction switch is a 4 position switch that allows the operator to move the selected mirror up, down, left or right.

Power Mirror System Operation

The power mirror switch receives power through the battery supply voltage circuit and the MIR/LOCK fuse and a constant ground. The 4 positions of the direction switch have dual switch contacts which are connected to the mirror control module through the selector switch and the mirror signal circuits. When a mirror is selected and a direction switch is activated, the MMM receives 2 signals (battery voltage and ground). The MMM uses these signals to determine both the mirror selected and the direction requested. The MMM will then supply battery voltage and ground to the appropriate power mirror motor through the mirror motor control circuits.

Memory Mirror System

Memory Mirror System Components

The memory mirror system consists of the following components:

    ■ Memory switch
    ■ Left outside power mirror with position sensors
    ■ Right outside power mirror with position sensors
    ■ Memory Mirror Module (MMM)
    ■ Transmission range switch
    ■ MIR/LOCK 3A fuse

Memory Mirror System Controls

The MMM is capable of controlling the memory functions to the preferred settings of 2 different drivers. Each driver will be able to personalize the memory system by selecting their preferred settings from the Secondary Information Center (SIC) or from the memory switch. The memory system can also be configured through the SIC and the features include:

    ■ Auto exit/entry seat positioning
    ■ Position recall on FOB activation
    ■ Position recall on ignition key insertion
    ■ Mirror tilt in reverse

For further information on programming and configuration, refer to Personalization instructions in your manual.

Memory Mirror System Operation

The MMM is capable of storing mirror position for 2 different drivers. Mirror position is determined by both horizontal and vertical position sensors in each of the power mirrors. The MMM supplies a reference voltage and a low reference to these sensors and determines mirror position through the horizontal and vertical position signal circuits.

The MMM receives power through the battery supply voltage circuit and the MIR/LOCK fuse and a constant ground source. Any time that battery voltage is disconnected and then connected from the MMM, the MMM will enter the mirror relearn mode. The mirror relearn mode can also be commanded using a scan tool. Refer to Memory Mirror Module (MMM) Learn Procedure for further information.The memory switch receives power through the battery supply voltage circuit and the MIR/LOCK fuse. The MMM upon receipt of a memory switch signal input, a class 2 message from the SIC or a class 2 message from the PCM indicating that the transmission is in park, will then supply battery voltage and ground to the appropriate power mirror motors through the mirror motor control circuits to move the mirrors to the predetermined positions.

Mirror Tilt in Reverse Operation

The mirror control module is capable of tilting the left, right or both power mirrors when a class 2 message is received indicating that the vehicle was placed in reverse. This is done to provide enhanced visibility during parking or backing maneuvers. This feature can be personalized to the needs of 2 different drivers.

Folding Mirror System

Folding Mirror System Components

The folding mirror system consists of the following components:

    ■ Folding mirror switch
    ■ Fold motor in each of the outside power mirrors
    ■ EXT LPS 10A fuse

Folding Mirror System Controls

The mirror fold switch allows the operator to retract or extend the outside rearview mirrors from a single switch. The mirror fold switch incorporates solid state circuitry to allow this single switch input to alternately perform both extend and retract functions.

Folding Mirror System Operation

The mirror fold switch receives power through the battery supply voltage circuit and the EXT LPS fuse and a constant ground. The mirror extend and retract control circuits are connected to ground through the normally closed contacts of the mirror fold switch. When the mirror fold switch is activated, the solid state circuitry will energize either the extend or retract relay (depending on the last function) which supplies battery voltage to the fold motor through one of the control circuits. The other control circuit is connected to ground through the normally closed contacts in the mirror fold switch and the mirror extends or retracts.

Heated Mirror System

Heated Mirror System Components

The heated mirror system consists of the following components:

    ■ RR Defog relay
    ■ HVAC control module
    ■ Left outside power mirror
    ■ Right outside power mirror
    ■ HTD MIR 10A fuse

Heated Mirror System Controls

The heated mirror system is activated by depressing the rear window defogger switch, which is part of the HVAC control module.

Heated Mirror System Operation

The heated mirror system operates in parallel to the rear window defogger. Each outside rearview mirror contains a heating element that is connected to a constant ground source. When the rear window defogger system is active, battery voltage is available at the HTD MIR fuse and to the outside rearview mirrors through the heated mirror supply voltage circuit. The mirrors will heat up to remove ice, snow or frost and will automatically deactivate when the rear defogger system has timed out (approximately 10 min).

Mirrors -- Outside Automatic Day/Night Feature

The automatic day/night feature of the driver outside rearview mirror is controlled by the inside rearview mirror. The inside rearview mirror supplies a signal and a low reference to the driver outside rearview mirror. The voltage on the signal circuit of the driver outside rearview mirror varies between 0.5 to 1.5 volts depending on light conditions present at the inside rearview mirror. At night, with the automatic day-night feature enabled, the driver outside rearview mirror will automatically darken with the inside rearview mirror to reduce the glare from the headlamps from behind. The voltage on the signal circuit of the driver outside rearview mirror will be near 1.5 volts. In the daytime, the mirrors are in a normal state. The voltage on the signal circuit of the driver outside rearview mirror may be less than or near 0.5 volts.

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Edit: Character Correction.
 
Memory Mirror Module (MMM) Learn Procedure

The mirror relearn procedure, when initiated, commands the Memory Mirror Module (MMM) to control the driver and then the passenger mirror in the left, right, up and down directions. When commanding the mirrors the MMM also learns the direction of horizontal and vertical position sensor signal circuit feedback voltages. To initiate the relearn procedure, perform the following:

  1. With a scan tool, select Memory Mirror Module
  2. Select Special Functions
  3. Select Output Controls
  4. Select Mirror Relearn
  5. Then press the Reset button

If the mirror relearn procedure does not control the driver and passenger mirrors as described, there may be another fault in the mirror systems.
 
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