Remote Start
The remote start feature allows the operator to remotely start the engine from up to 100 meters (328 feet) away and is activated using the IKT. Once started, the engine runs for 10 minutes. The run time can be extended by the operator.
Scheme 28
Network Message Chart
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| RKE data | TPM module | Provide the BCM with the RKE TIC and the button press requesting a remote start. |
MODULE NETWORK INPUT MESSAGES BCM
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Starter crank request | BCM | Provides the PCM with ignition switch and hood input status and a request to crank and start the engine during a remote start event. |
| Remote start request | BCM | Provides the PCM with a request for remote start. |
MODULE NETWORK INPUT MESSAGES PCM
Note. This vehicle is equipped with PATS that disables the engine from cranking and starting if an unprogrammed PATS key is used or an invalid PCM ID is received. PATS is controlled by the BCM. If there is a PATS concern that cause the engine to be disabled, the IPC displays "STARTING SYSTEM FAULT" in the message center. PATS, REFER to ANTI-THEFT SYSTEM - PASSIVE ANTI-THEFT SYSTEM - WITHOUT INTELLIGENT ACCESS .
Under normal operation, when the ignition is turned to START, the PCM receives the following inputs
- Request to start the engine
- PATS is enable message
- Correct transaxle PARK or Neutral input from the TR sensor
When the PCM receives the correct inputs, voltage and ground is supplied to the starter relay coil. The starter relay coil is energized causing the relay contacts to close providing voltage to the starter solenoid, allowing the starter motor to crank and start the engine.
The PCM disengages the starter once an engine RPM threshold is reached, a set crank time is exceeded or the ignition is turned OFF.
Under normal operation, when equipped with remote start, a remote start event is initiated when the IKT transmits a remote start request signal to the TPM module. The TPM module sends a remote start request message to the BCM. The BCM sends a crank request message to the PCM. The factory equipped remote start system does not operate if the ignition is in the RUN/START position or the hood is not closed.
The remote start system enables the engine to be started from up to 100 meters (328 feet) away, by pressing a sequence of buttons on the IKT. The remote start system is activated by pressing the lock button on the IKT, to make sure the doors are locked, followed by 2 presses of the remote start button. The 3 button presses must occur within 3 seconds. The BCM acknowledges the start request by flashing the exterior lights twice. Once started, the engine runs for 10 minutes (default run time is 10 minutes; the time can be programmed by the customer to 5, 10 or 15 minutes) and the parking lights remain illuminated until the cycle is complete. The remote start duration can also be extended by initiating remote start while the first timer is still running or by initiating a completely independent start cycle when the first has completed. No more than 2 remote start sequences can occur within a one hour period, unless the ignition is set to the RUN/START position between the remote start requests. During the remote start cycle the power windows are inhibited and the radio will not turn on automatically but may be switched on manually from inside the vehicle. If the remote start system fails to start the horn chirps twice.
To transition from remote start mode to drive mode, use a programmed IKT to switch the ignition to the RUN position. If a programmed IKT is not used, the engine shuts off.
To deactivate the remote start system, press the remote start button once. When deactivating the remote start system the parking lights turn off to give a visual indication that the engine and climate control features have turned off. It may be necessary to be closer to the vehicle to deactivate the remote start feature than it was to initiate it due to ground deflections and added noise from the engine running.
Integrated Keyhead Transmitter (IKT)
The RKE system uses an IKT. The IKT incorporates both the PATS and RKE functions into a single device. The factory installed remote start (if equipped), is controlled by the IKT function and allows the engine to be started from outside the vehicle. The RKE functions controls the door lock/unlock features.
Passive Anti-Theft Transceiver
REFER to PASSIVE ANTI-THEFT SYSTEM (PATS) TRANSCEIVER .
Body Control Module (BCM)
The BCM is the gateway module, translating messages on the HS-CAN to MS-CAN . This allows a message to be distributed throughout both networks.
Ignition Switch
The ignition switch is controlled by the ignition lock cylinder with a key. When the ignition lock cylinder is turned using the key, a mechanical connection positions the ignition switch to the selected position and allows the ignition switch to send voltage to specific components. The ignition switch sends voltage to the BCM and PCM during engine cranking.
Powertrain Control Module (PCM)
The PCM receives input signals from sensors and other components (switches, relays). Based on this information, the PCM generates output signals to control various relays, solenoids and actuators.
Tire Pressure Monitor (TPM) Module
The TPM module is a receiving antenna that receives high frequency signals. When a remote start request is initiated from the IKT the TPM module receives the signal and communicates that remote start request message via the MS-CAN to the BCM to initiate a remote start event.
Transmission Range (TR) Sensor
The TR sensor is located inside of the transaxle and indicates gearshift position to the PCM. The PCM uses that information to enable the starting system to start the engine in PARK or NEUTRAL. REFER to SENSORS AND SWITCHES .
The remote start feature allows the operator to remotely start the engine from up to 100 meters (328 feet) away and is activated using the IKT. Once started, the engine runs for 10 minutes. The run time can be extended by the operator.
Scheme 29
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Remote start command | TPM module via LIN | Provides the RFA module with the IA key command for a remote start. |
MODULE NETWORK INPUT MESSAGES RFA MODULE
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| RKE data (with IA) | RFA module | Provide the BCM with the correct IA key data. Provides a request to the BCM for starting per customer remote start request. |
MODULE NETWORK INPUT MESSAGES BCM
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Starter crank request | BCM | Provides the PCM with ignition, hood input status and a request to crank and start the engine during a remote start event. |
| Remote start request | BCM | Provides the PCM with a request for remote start. |
MODULE NETWORK INPUT MESSAGES PCM
Note. This vehicle is equipped with PATS that disables the engine from cranking if an unprogrammed PATS key is used or an invalid PCM ID is received. PATS is controlled by the BCM. If there is a PATS concern that cause the engine to be disabled, the IPC displays "STARTING SYSTEM FAULT" in the message center. REFER to ANTI-THEFT - PERIMETER Passive Anti-Theft System (PATS) - with Intelligent Access (IA).
The RFA module in conjunction with the BCM controls the ignition modes and in conjunction with the PCM controls the starting system.
Under normal operation, during a start event, the start/stop switch is pressed in combination with the brake pedal, the RFA module, PCM and BCM receives a request to start the engine.
The PCM recognizes the correct inputs from the BCM and TR sensor and provides voltage and ground to energize the starter relay coil and close the starter relay contacts. The starter relay contacts close, providing voltage to the starter solenoid, allowing the starter motor to crank the engine. The PCM disengages the starter motor once an engine RPM threshold is reached, a set crank time is exceeded or the stop/start button is pressed indicating an engine shutdown.
Under normal operation, when equipped with remote start, a remote start event is initiated by pressing a sequence of buttons on the IA key. The factory equipped remote start system does not operate if the ignition is in the RUN/START position or the hood is not closed.
The remote start system enables the engine to be started from up to 100 meters (328 feet) away and is activated by pressing the lock button on the IA key, to make sure the doors are locked, followed by 2 presses of the remote start button. The 3 button presses must occur within 3 seconds. The system acknowledges the start request by flashing the exterior lights twice. Once started, the engine runs for 10 minutes (default run time is 10 minutes; the time can be programmed by the customer to 5, 10 or 15 minutes) and the parking lights remain illuminated until the cycle is complete. The remote start duration can also be extended by initiating remote start while the first timer is still running or by initiating a completely independent start cycle when the first has completed. No more than 2 remote start sequences can occur within a one hour period, unless the ignition is set to the RUN/START position between the remote start requests. During the remote start cycle the power windows are inhibited and the radio will not turn on automatically but may be switched on manually from inside the vehicle. If the remote start system fails to start the horn will chirp twice.
To transition from remote start mode to drive mode, use a programmed IA key to transition to RUN. If a programmed IA key is not used, the engine shuts off.
To deactivate the remote start system, press the remote start button once. When deactivating the remote start system the parking lights turn off to give a visual indication that the engine and climate control features have turned off. It may be necessary to be closer to the vehicle to deactivate the remote start feature than it was to initiate it due to ground deflections and added noise from the engine running.
The BCM is the gateway module, translating messages on the HS-CAN to MS-CAN . This allows a message to be distributed throughout both networks.
Intelligent Access (IA) Key
The IA key incorporates both the PATS and the RKE transmitter functions in a single device. The IA key must be located inside the vehicle for engine starting. When the IA key is activated it sends out a frequency signal that is received by the TPM. The IA key also contains a key blade that is used to enter the vehicle as a backup.
Start-Stop Switch
The start/stop switch is a momentary contact switch that is hardwired to the RFA module, BCM, and PCM. When the switch is pressed, it signals the RFA module, BCM and PCM that there is a request to either switch the ignition on or start the engine. The start/stop switch is connected to both modules as a backup in case of a failure. If there is a circuit failure to either module from the start/stop switch, the modules communicate the start/stop switch request to each other over the Medium Speed Controller Area Network (MS-CAN).
Remote Function Actuator (RFA) Module
The RFA module interprets radio frequency signals from the TPM module and IA key transmitters. The RFA module receives input signals from various modules and other components. Based on this information, the RFA module generates an output signal to control various components (door locks, liftgate, etc.).
The PCM receives input signals from sensors and other components (switches, relays). Based on this information, the PCM generates output signals to control various relays, solenoids and actuators.
The TPM module is a receiving antenna that receives high frequency signals. When a remote start request is initiated from the IA key the TPM module receives the signal and communicates the remote start request message to the RFA module. The RFA module transmits the message via the MS-CAN to the BCM to initiate a remote start event.
The TR sensor is located inside of the transaxle and indicates gearshift position to the PCM. The PCM uses that information to enable the starting system to start the engine in PARK or NEUTRAL. REFER to SENSORS AND SWITCHES .
Engine Does Not Crank (Without Intelligent Access)
Refer to OEM - STARTING SYSTEM Wiring Diagrams for schematic and connector information.
Engine Does Not Crank (With Intelligent Access)
Refer to OEM - STARTING SYSTEM Wiring Diagrams for schematic and connector information.
Refer to OEM - TURN SIGNAL_STOP_HAZARD LAMPS Wiring Diagrams for schematic and connector information.
C113A:11, C113A:15
Refer to OEM -PASSIVE ANTI-THEFT SYSTEM Wiring Diagrams for schematic and connector information.
The Remote Start Is Inoperative
The factory equipped remote start system enables the engine to be started from up to 100 meters (328 feet) away by pressing the IKT or IA key lock button followed by 2 presses of the remote start button. The 3 button presses must occur within 3 seconds. The IKT or IA key signal is received through an internal antenna in the TPM module and communicated over the MS-CAN to initiate the vehicle start.
Visual Inspection and Diagnostic Pre-checks
- Inspect the remote start feature is enabled.
- Inspect the IKT (without IA).
- Inspect the IA key.
- Inspect the hood switch.
- Verify the ignition is OFF.
Scheme 30
Scheme 31
- CHECK OPERATION OF THE IKT OR IA KEY Press all buttons on the IKT or IA key and check for correct operation. Is the remote start the only function that is inoperative? Yes: GO to 2 . No: For vehicles without IA, REFER to «DIAGNOSTIC ROUTINE I»(ref-517600-S00647103102012121200000) : The Remote Keyless Entry (RKE) Transmitter Is Inoperative. For vehicles with IA, REFER to «DIAGNOSTIC ROUTINE J»(ref-517619-S10635596622012121200000) : The Remote Keyless Entry (RKE) Transmitter Is Inoperative.
- CHECK THE VEHICLE STARTING Attempt to start the vehicle using the key in the ignition or pressing the start/stop switch. Did the vehicle start? Yes: GO to 3 . No: This is not a remote start issue. REFER to «Diagnostic Routine A: Engine Does Not Crank (Without Intelligent Access)»(ref-517562-S40362812792012121200000) . REFER to «Diagnostic Routine B: Engine Does Not Crank (With Intelligent Access)»(ref-517562-S30063094482012121200000) .
- CHECK FOR ILLUMINATED ENGINE WARNING LAMPS With the engine running, check the IPC for illuminated warning lamps. Are any engine warning lamps illuminated? Yes: CARRY OUT a self-test of the PCM. DIAGNOSE and REPAIR any DTCs present. REFER to «DTC CHART: POWERTRAIN CONTROL MODULE (PCM)»(ref-517566-S33453853772012121200000) . No: GO to 4 .
- RETRIEVE BCM AND TPM MODULE DTCs Using a scan tool, perform the BCM self-test. Using a scan tool, perform the TPM module self-test. Are any DTCs present? Yes: For BCM DTCs C113A:11 or C113A:15, REFER to «DIAGNOSTIC ROUTINE E: C113A:11, C113A:15»(ref-517562-S24956157632012121200000) . For BCM DTC B1305:01, REFER to «DIAGNOSTIC ROUTINE B»(ref-517570-S11292854512012121200000) : B1305:01. For TPM module DTC U0140:87, REFER to «DIAGNOSTIC ROUTINE E»(ref-517544-S33881789882012121200000) : U0140:87. For TPM module DTC U0422:68, REFER to «DTC CHART: TIRE PRESSURE MONITOR (TPM) MODULE»(ref-517544-S08486092502012121200000) . For all other BCM DTCs , REFER to «DTC CHART: BODY CONTROL MODULE (BCM)»(ref-517607-S42107110602012121200000) . For all other TPM module DTCs , REFER to «DTC CHART: TIRE PRESSURE MONITOR (TPM) MODULE»(ref-517544-S08486092502012121200000) . No: GO to 5 .
- CONFIRM THE REMOTE START FUNCTION IS ENABLED Ignition ON. Check the message center and confirm the remote start function is enabled. Refer to the Owner's Literature. Is the remote start function enabled? Yes: GO to 6 . No: ENABLE the remote start function.
- CHECK THE LAST RECEIVED RKE TRANSMITTER BUTTON PRESS (LST_RKE_xMTR) OR LAST RECEIVED TRANSMITTER ID BUTTON PRESS (LST_XM_B_PRS) PID Using a scan tool, view BCM or RFA module PIDs . Without IA, monitor BCM PID LST_RKE_xMTR. With IA, monitor RFA module PID LST_XM_B_Prs. Press the remote start button on the IKT or IA key and note the PID status. Does the selected PID indicate the remote start button was the last button pressed? Yes: GO to 7 . No: For vehicles without IA, REPLACE and PROGRAM a new IKT. REFER to «KEY PROGRAMMING USING DIAGNOSTIC EQUIPMENT»(ref-517598-S41467496612012121200000) or REFER to «KEY PROGRAMMING USING TWO PROGRAMMED KEYS»(ref-517598-S05123047612012121200000) . For vehicles with IA, REPLACE and PROGRAM a new IA key. REFER to «KEY PROGRAMMING USING DIAGNOSTIC EQUIPMENT»(ref-517598-S41467496612012121200000) or REFER to «KEY PROGRAMMING USING TWO PROGRAMMED KEYS»(ref-517598-S05123047612012121200000) .
- CHECK THE PCM WAKE UP CIRCUIT Ignition OFF. Disconnect: PCM C1381B (2.0L) or PCM C175B (3.5L). Ignition ON. For 2.0L, measure: PCM Ground C1381B Ground Pin Circuit Measurement / Action Pin Circuit 14 CE436 (VT/OG) - Ground For 3.5L, measure: PCM Ground C175B Ground Pin Circuit Measurement / Action Pin Circuit 35 CE436 (VT/OG) - Ground Is the voltage greater than 11 volts? Yes: GO to 8 . No: VERIFY BCM fuse 18 (10A) is OK. If OK, REPAIR circuit for an open. If not OK, REFER to the appropriate wiring diagram to identify the possible causes of the circuit short. REFER to «OEM FUSE AND RELAY INFORMATION»(ref-485835) and «OEM WIRING DIAGRAMS»(ref-514995) .
- CHECK THE REMOTE START PRECONDITIONS FOR CORRECT OPERATION NOTE: The BCM acknowledges the remote start request and that all preconditions have been met by providing 2 short flashes of the turn indicators and a system complete chirp. Make sure that the preconditions for remote start have been met: Hood is closed with no DTC present. Ignition must be OFF. Vehicle must be in PARK. Remote start feature is configured ON. Number of remote start events does not exceed allowed time (2 events in a 1 hour duration). Attempt to carry out a remote start. Is the remote start system still inoperative? Yes: GO to 9 . No: CARRY OUT the required precondition as necessary.
- CHECK FOR CORRECT PCM OPERATION Ignition OFF. Disconnect and inspect all PCM connectors. Repair: corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins pushed-out pins - install new pins as necessary Reconnect the PCM connectors. Make sure they seat and latch correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes: CHECK OASIS for any applicable TSBs . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no TSB address this concern, INSTALL a new PCM. REFER to «POWERTRAIN CONTROL MODULE (PCM) - 2.0L GTDI»(ref-517566-S00665914912012121200000) or REFER to «POWERTRAIN CONTROL MODULE (PCM) - 3.5L TI-VCT»(ref-517566-S09666002682012121200000) . No: The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.