Electronic Control Modules - Service Information: Other Chrysler Crossfire I

STANDARD PROCEDURE - PCM/SKREEM PROGRAMMING

Note. Before replacing the PCM, be sure to check the related component/circuit integrity for failures not detected due to a double fault in the circuit. Most PCM failures are caused by internal component failures (i.e. relays and solenoids) and shorted circuits (i.e. pull-ups, drivers, and switched circuits). These failures are difficult to detect when a double fault has occurred and only one DTC has been set.

When a Powertrain Control Module (PCM) and the Sentry Key Remote Entry Module (SKREEM) are replaced at the same time, perform the following steps

1. Using the DRB III(R) scan tool, follow the on screen instructions to program the new PCM.
2. Using the DRB III(R), follow the on screen instructions to program the new Sentry Key Remote Entry Module.
3. Replace all ignition keys and program them to the new Sentry Key Remote Entry Module.

PROGRAMMING THE PCM

The Sentry Key Remote Entry System Secret Key is an ID code that is unique to each Sentry Key Remote Entry Module. This code is programmed and stored in the Sentry Key Remote Entry Module, the PCM, and the ignition key transponder chip(s). When replacing the PCM, the DRB III(R) will program the secret key into the new PCM.

Note. If three attempts are made to enter secure access mode using an incorrect PIN, secured access mode will be locked out for one hour. To exit this lockout mode, turn the ignition switch to the ON/RUN position for one hour, then enter the correct PIN. (Ensure all accessories are turned off. Also monitor the battery state and connect a battery charger if necessary).

PROGRAMMING THE SENTRY KEY REMOTE ENTRY MODULE

Note. Be sure to enter the correct country code. If the incorrect country code is programmed into the Sentry Key Remote Entry Module, it cannot be changed and the Sentry Key Remote Entry Module must be replaced.

1. Program ignition keys to the Sentry Key Remote Entry Module.

Note. If the PCM and the Sentry Key Remote Entry Module are replaced at the same time, all vehicle ignition keys will need to be replaced and programmed to the new Sentry Key Remote Entry Module.

PROGRAMMING IGNITION KEYS TO THE SENTRY KEY REMOTE ENTRY MODULE

Note. A maximum of eight keys can be learned to each Sentry Key Remote Entry Module. Once a key is learned to an Sentry Key Remote Entry Module it (the key) cannot be transferred to another vehicle.

1. Obtain ignition keys to be programmed from the customer (8 keys maximum).
2. Using the DRB III(R), erase all ignition keys.
3. Program all of the ignition keys.

If ignition key programming is unsuccessful, the DRB III(R) will display a failure message.

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1. Disconnect the negative battery cable (2).
2. Slide the clips forward to remove the plastic control module box cover (1).
3. Holding the metal powertrain control module retaining clip (1) back, pull the powertrain control module up and out of the control module box.
4. Disconnect the electrical connectors (1) and remove the powertrain control module (2).

Scheme 14

1. Disconnect the negative battery cable.
2. Slide the clips forward to remove the plastic control module box cover (1).
3. Holding the metal powertrain control module retaining clip back, pull the powertrain control module (2) up and out of the control module box (5).
4. Disconnect the PCM harness electrical connector and remove the powertrain control module (2).

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1. Connect the electrical connectors (1) to the powertrain control module (2).
2. Install the powertrain control module into the control module box.
3. Push the powertrain control module into the metal powertrain control module retaining clip (1).
4. Install the plastic control module box cover (1) and slide the clips rearward to lock the cover.
5. Connect the negative battery cable (2).

BATTERY FEED

The Transmission Control Module is powered through the Traction Control Relay. The adaptive learn values are stored in non-volatile memory and can only be removed using the DRB III(R).

LIMP-HOME MODE

In order to ensure safe driving and to prevent further damage to the automatic transmission, the Transmission Control Module switches to limp-home mode in the event of a critical failure. A diagnostic trouble code assigned to the failure is stored in memory. All solenoid and regulating valves are thus de-energized. The result is that the gear last engaged remains engaged, the modulating pressure and shift pressure rise to the maximum levels, and the torque converter lockup clutch is disarmed. In order to preserve the operability of the vehicle to some extent, the automatic transmission internal hydraulic control can be used to engage second gear or reverse by: stopping the vehicle, switching off the engine, moving the shift selector lever to Park, waiting at least ten seconds, starting the engine, and moving the shift selector lever to drive to access second gear, or moving the shift selector lever to Reverse if needed. The limp-home function remains active until the failure is corrected or the stored diagnostic trouble code is erased. Sporadic failures may also be reset by switching the ignition switch from Off to On.

STANDARD PROCEDURE - TCM QUICK LEARN

The quick learn procedure requires the use of the DRB III(R) scan tool. Navigate to Transmission, Transmission Control (TCM), Miscellaneous Functions, and Reset Adapt, Shift Quality. Follow the onscreen instructions.

This program allows the electronic transmission system to recalibrate itself. This will provide the proper transmission operation. The quick learn procedure should be performed if any of the following procedures are performed

1. Transmission Assembly Replacement
2. Transmission Control Module Replacement
3. Solenoid Pack Replacement
4. Clutch Plate and/or Seal Replacement
5. Valve Body Replacement or Recondition

To perform the Quick Learn Procedure, the following conditions must be met

1. The brakes must be applied
2. The engine speed must be above 500 rpm
3. The shift lever position must stay in Park until prompted to shift to Drive
4. The shift lever position must stay in Drive after the Shift to Drive prompt until the DRB III(R) indicates the procedure is complete
5. The calculated oil temperature must be above 15.6°C (60°F) and below 93.3°C (200°F)

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1. Un-snap and remove the carpet floor mat.
2. Fold back the carpeting in the passenger footwell to expose the foam insulation panel.
3. Remove the foam insulation panel. NOTE: It is not necessary to remove the electrical connectors to rotate the base plate in the passenger footwell.
4. Remove the three plastic retaining nuts (1) from the floor panel studs.
5. Lift the base plate and rotate the top of the base plate toward the rear of the vehicle to expose the TCM.
6. Remove the two retaining screws (1) from the base plate, and disconnect the TCM harness connectors.
7. Remove the TCM (2) from the base plate.
8. Un-snap and remove the carpet floor mat.
9. Fold back the carpeting in the passenger footwell to expose the foam insulation panel.
10. Remove the foam insulation panel. NOTE: It is not necessary to remove the electrical connectors to rotate the base plate in the passenger footwell.
11. Remove the three plastic retaining nuts (1) from the floor panel studs.
12. Lift the base plate and rotate the top of the base plate toward the rear of the vehicle to expose the TCM.
13. Remove the two retaining screws (2) from the base plate, and disconnect the TCM harness connectors.
14. Remove the TCM (1) from the base plate.

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1. Connect the TCM harness connectors and attach the TCM (2) to the base plate with the two retaining screws (1).
2. Rotate the base plate and install it over the mounting studs on the floor panel. NOTE: Be sure not to pinch or cause interference with the wiring harnesses while locating the base plate to the floor mounting studs.
3. Install the three plastic retaining nuts (1) and secure the base plate to the vehicle floor.
4. Install the foam insulation panel. NOTE: Make sure the aligning tabs of the base plate are positioned correctly in the foam insulating panel.
5. Install the carpeting in the passenger footwell.
6. Install the floor mat to the carpet.
7. Connect the TCM harness connectors and attach the TCM to the base plate with the two retaining screws (1).
8. Rotate the base plate and install it over the mounting studs on the floor panel. NOTE: Be sure not to pinch or cause interference with the wiring harnesses while locating the base plate to the floor mounting studs.
9. Install the three plastic retaining nuts (1) and secure the base plate to the vehicle floor.
10. Install the foam insulation panel. NOTE: Make sure the aligning tabs of the base plate are positioned correctly in the foam insulating panel.
11. Install the carpeting in the passenger footwell.
12. Install the floor mat to the carpet.

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The Controller Antilock Brake (CAB) (1) is located in the engine compartment in front of the Underhood Accessory Fuse Block (2).

The CAB is a microprocessor-based device which monitors the Antilock Brake System (ABS) during normal braking and controls it when the vehicle is in an ABS stop. The CAB is mounted to the Hydraulic Control Unit (HCU) (3) as part of the Integrated Control Unit (ICU). The CAB uses a 47-way electrical connector on the vehicle wiring harness. The CAB is powered through Fuse 3 (50 amp) located in the engine fuse block.

CAB INPUTS

1. Wheel speed sensors (four)
2. Brake lamp switch
3. System and pump voltage
4. Ground
5. ESP OFF switch
6. Diagnostic communication

CAB OUTPUTS

1. Amber ABS warning indicator lamp actuation (via CAN BUS)
2. Instrument cluster communication (via CAN BUS)
3. BAS/ESP indicator lamp
4. Diagnostic communication

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1. Disconnect the negative battery cable.
2. Clean the top of the Hydraulic Control Unit (HCU) near the hydraulic lines. NOTE: To aid in reassembly, insure the hydraulic brake lines and corresponding connections at the HCU are clearly marked before disassembly.
3. Disconnect the hydraulic lines (1-6) from the HCU. Cap the hydraulic lines and connections with plugs.
4. Disconnect the Controller Antilock Brake (CAB) harness connector (1).
5. Remove the retaining screws (2) from the Integrated Control Unit (ICU) retaining bracket.
6. Pull the ICU upwards, carefully pushing the hydraulic brake lines to one side.
7. Remove the retaining screws that hold the CAB to the HCU and carefully separate the CAB from the HCU.

VEHICLE LOCKING / UNLOCKING

To unlock, the SKREEM module sends a signal to the Body Control Module. The Body Control Module then sends a signal to the Central Locking Pump/Security System Module (CLP/SSM) via the Controller Area Network (CAN) Bus. The CLP/SSM pump motor starts running and supplies air pressure. The door lock actuators are pressurized. When a pressure threshold is reached in the system, the pump is switched off by an internal pressure switch. The pressure in the system is then released by the CLP/SSM and the unlocking operation is completed. The locking procedure is accomplished in a fashion opposite to the unlocking operation. However, the next time the remote control button is pressed, the CLP/SSM is also actuated by connecting it to ground by the second control lead on the SKREEM module. The direction of rotation for the CLP/SSM pump motor is reversed, thereby providing the vacuum required to lock. In order to avoid unlocking the vehicle unintentionally, the vehicle is relocked by the CLP/SSM via the SKREEM module. After unlocking with the remote control, the locks will be relocked if either door is not opened within 40 seconds, the key is not inserted into the ignition switch, or the interior power door lock switch is not actuated. The CLP/SSM reads the signals (door contacts, liftgate/decklid, interior power door lock switch) and actuates the power door lock actuators. The vehicle security alarm is also activated by the relocking function.

AUTOMATIC LOCKING / UNLOCKING

Upon reaching a speed of 15 km/h (9 MPH), the vehicle doors are locked automatically. The fuel tank flap remains unlocked. If, after automatic locking, the vehicle is unlocked with the interior power door lock switch, this state is maintained until a door is opened or until the ignition is switched off. Automatic locking is accomplished again only upon reaching the specified speed. The logic circuitry for this function is integrated into the CLP/SSM. The automatic locking function can be activated or deactivated with the DRB III(R). An alternative is to use the interior power door lock switch with the ignition switched on by pressing and holding the door lock switch for more than 5 seconds in either the lock (auto locking switched on) or unlock (auto locking switched off) position. The alternative of enabling/disabling the auto locking system by using the interior power door lock switch can also be inhibited with the DRB III(R).

EMERGENCY UNLOCKING

In the event of a vehicle collision, the doors are unlocked automatically by a crash sensor integrated into the CLP/SSM. The doors are unlocked after a delay time of 8 to 11 seconds. The emergency unlocking function interrupts all functions performed by the CLP/SSM, which are reactivated only after interrupting the ignition. The emergency unlocking function is only active when the vehicle is unlocked from the outside.

VEHICLE RELOCKING

In order to avoid unlocking the vehicle unintentionally, the vehicle is relocked by the CLP/SSM via the SKREEM module. Relocking is accomplished after unlocking with the remote control when: a door is not opened within 40 seconds, the key is not inserted into the ignition lock, or the interior power door lock switch is not actuated. The CLP/SSM reads the signals (door contacts, interior power door lock switch) and actuates the power door lock actuators. The vehicle security alarm is also activated by the relocking function.

ANTI-THEFT SYSTEM

Once the anti-theft alarm system is set, the anti-theft alarm can be triggered if

1. The Doors, Hood, or Liftgate/Decklid is opened
2. The Radio is removed (disconnected electrically)
3. The Ignition is jumped
4. The Glove Box is opened
5. The Anti-theft Tow Sensor is tripped
6. The Alarm Siren is tripped

The inputs ready for triggering an alarm are checked twice per second by the CLP/SSM. If two sequential checks of the same input indicate that the input is not in the non-actuated state, the audible alarm Siren is triggered and the front and rear lamps flash.

SIREN

The vehicle theft system alarm Siren contains a built in rechargeable battery back up and can sound if its electrical circuits are disconnected or if the vehicle battery cables are disconnected. The Siren can also sound if the electrical circuits between it and the CLP/SSM are disconnected. Once triggered, the Siren can only be silenced by unlocking the vehicle with the RF key transmitter or by unlocking the vehicle with the mechanical key.

ANTI-THEFT SWITCH / ANTI-THEFT TOW SENSOR

The Anti-Theft Tow Sensor is an inclination sensor that contains electrodes which are partially immersed in an electrically conductive liquid. If the conductive value between the electrodes changes, the sensor recognizes a change in the inclination of the vehicle. When the vehicle is parked, the value for the vehicle position is stored. If the vehicle is moved with a certain inclination in longitudinal and/or lateral direction for a certain time when the anti-theft alarm system is activated, the Anti-Theft Tow Sensor transmits an alarm signal to the CLP/SSM. In order to allow the vehicle to be towed or transported without sounding the alarm Siren, the Anti-Theft Tow Sensor can be deactivated by pressing the Anti-Theft Switch which is located in the passenger compartment on the center console in front of the shift lever.

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1. Disconnect the negative battery cable.
2. Remove the trunk floor carpet.
3. Remove the right side interior trim panel (4).
4. Remove the upper right roof trim panel (1).
5. Remove the rear interior trim panel (2).
6. Remove the right half of the floor covering (3).
7. Remove the sound deadening foam material from the central locking pump/security system module.
8. Disconnect the air lines (2) and the electrical harness (1) from the central locking pump/security system module (3) and remove the module.

BODY CONTROL MODULE

The Body Control Module (BCM) (1) is concealed in the engine compartment inside of the Control Module Box (2) located next to the battery (3).

The BCM utilizes integrated circuitry and information carried on the Controller Area Network (CAN) bus along with many hardwired inputs to monitor many sensor and switch inputs throughout the vehicle. In response to those inputs, the internal circuitry and programming of the BCM allows it to control and integrate many electronic functions and features of the vehicle through both hardwired outputs and the transmission of electronic message outputs to other electronic modules in the vehicle over the CAN data bus.

The BCM for this model is serviced only as a complete unit. A BCM can only be repaired by or replaced through an authorized electronic warranty repair station. Refer to the latest version of the Warranty Policies and article for a current listing of authorized electronic repair stations.

CONTROL MODULE COOLING FAN

The Control Module Cooling Fan is used to decrease the heat that is generated by the Transmission Control Module (TCM) and the Audio Amplifier. The Control Module Cooling Fan is located inside of the front lower section of the Control Module Box. The Cooling Fan is wired to the BCM and is activated when the ignition is On. The Cooling Fan is attached to a flexible duct that runs down to the passenger foot well, and circulates air to the modules. The fan is used to cool the modules that are mounted in the passenger compartment.

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The Body Control Module (BCM) (2) is concealed in the engine compartment inside of the Control Module Box (1) located next to the battery (3).

The BCM utilizes integrated circuitry and information carried on the Controller Area Network (CAN) bus along with many hardwired inputs to monitor many sensor and switch inputs throughout the vehicle. In response to those inputs, the internal circuitry and programming of the BCM allows it to control and integrate many electronic functions and features of the vehicle through both hardwired outputs and the transmission of electronic message outputs to other electronic modules in the vehicle over the CAN data bus.

The BCM for this model is serviced only as a complete unit. A BCM can only be repaired by or replaced through an authorized electronic warranty repair station. Refer to the latest version of the Warranty Policies and article for a current listing of authorized electronic repair stations.

A Control Module Cooling Fan is located inside of the front lower section of the Control Module Box (1). The Cooling Fan is wired to the BCM and is switched on when the ignition is On. The Cooling Fan is attached to a duct which pulls cabin temperature air from the passenger compartment and circulates it into the Control Module Box in order to decrease the heat that may be generated by the Powertrain Control Module (PCM), the BCM, and the Relay Control Module.

STANDARD PROCEDURE - POWER TOP CONTROL MODULE INITIALIZATION

1. Connect the DRB III(R) scan tool to the Data Link Connector.
2. Turn the Ignition Switch on and access the DTC Functions screen.
3. Select "Clear DTCs" and clear all DTCs in the new replacement Power Top Control Module (PTCM). NOTE: The new PTCM must be initialized prior to being put into service. The PTCM is shipped in an active "Production Mode". The PTCM must be converted from an active Production Mode to a "Normal Mode". To convert the PTCM to a Normal Mode, the Ignition Switch must be cycled ON and OFF five (5) times. In the process of initializing the PTCM, a DTC is stored and must be cleared when complete.
4. Turn the Ignition Switch OFF and then ON 5 times with a 10 second pause between each ignition cycle.
5. Clear all Power Top Control Module DTCs.

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1. Disconnect the negative battery cable.
2. Remove the left trunk trim panel (1), by removing the plastic retainers (2) and lifting the left trunk trim panel out of the trunk.
3. Disconnect the power top control module harness connectors (2) and (3).
4. Remove the power top control module retaining screw (1).
5. Remove the power top control module from the hydraulic pump bracket (4).