Diagnostic Routine F

Diagnostic Routine F

Diagnostic Overview

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 (Integrated Keyhead Transmitter) or IA (Intelligent Access) key lock button followed by 2 presses of the remote start button. The 3 button presses must occur within 3 seconds. The IKT (Integrated Keyhead Transmitter) or IA (Intelligent Access) key signal is received through an internal antenna in the TPM (Tire Pressure Monitor) module and communicated over the MS-CAN (Medium Speed Controller Area Network) to initiate the vehicle start.

Visual Inspection and Diagnostic Pre-checks

- Inspect the remote start feature is enabled.

- Inspect the IKT (Integrated Keyhead Transmitter) (without IA (Intelligent Access)).

- Inspect the IA (Intelligent Access) key.

- Inspect the hood switch.

- Verify the ignition is OFF.

Pinpoint Test

1. CHECK OPERATION OF THE IKT (Integrated Keyhead Transmitter) OR IA (Intelligent Access) KEY

1. Press all buttons on the IKT (Integrated Keyhead Transmitter) or IA (Intelligent Access) key and check for correct operation.

Is the remote start the only function that is inoperative?






2. CHECK THE VEHICLE STARTING

1. Attempt to start the vehicle using the key in the ignition or pressing the start/stop switch.

Did the vehicle start?






3. CHECK FOR ILLUMINATED ENGINE WARNING LAMPS

1. With the engine running, check the IPC (Instrument Panel Cluster) for illuminated warning lamps.

Are any engine warning lamps illuminated?






4. RETRIEVE BCM (Body Control Module) AND TPM (Tire Pressure Monitor) MODULE DTCs (Diagnostic Trouble Codes)

1. Using a scan tool, perform the BCM (Body Control Module) self-test.

2. Using a scan tool, perform the TPM (Tire Pressure Monitor) module self-test.

Are any DTCs (Diagnostic Trouble Codes) present?






5. CONFIRM THE REMOTE START FUNCTION IS ENABLED

1. Ignition ON.

2. Check the message center and confirm the remote start function is enabled. Refer to the Owner's Literature.

Is the remote start function enabled?






6. CHECK THE LAST RECEIVED RKE (Remote Keyless Entry) TRANSMITTER BUTTON PRESS (LST_RKE_xMTR) OR LAST RECEIVED TRANSMITTER ID BUTTON PRESS (LST_XM_B_PRS) PID (Parameter Identification)

1. Using a scan tool, view BCM (Body Control Module) or RFA (Remote Function Actuator) module PIDs (Parameter Identifications).

2. Without IA (Intelligent Access), monitor BCM (Body Control Module) PID (Parameter Identification) LST_RKE_xMTR.

3. With IA (Intelligent Access), monitor RFA (Remote Function Actuator) module PID (Parameter Identification) LST_XM_B_Prs.

4. Press the remote start button on the IKT (Integrated Keyhead Transmitter) or IA (Intelligent Access) key and note the PID (Parameter Identification) status.

Does the selected PID (Parameter Identification) indicate the remote start button was the last button pressed?






7. CHECK THE PCM (Powertrain Control Module) WAKE UP CIRCUIT

1. Ignition OFF.

2. Disconnect: PCM (Powertrain Control Module) C1381B (2.0L) or PCM (Powertrain Control Module) C175B (3.5L).

3. Ignition ON.

4. For 2.0L, measure:





5. For 3.5L, measure:





Is the voltage greater than 11 volts?






8. CHECK THE REMOTE START PRECONDITIONS FOR CORRECT OPERATION

1. NOTE: The BCM (Body Control Module) 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 (Diagnostic Trouble Code) 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?






9. CHECK FOR CORRECT PCM (Powertrain Control Module) OPERATION

1. Ignition OFF.

2. Disconnect and inspect all PCM (Powertrain Control Module) connectors.

3. 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

4. Reconnect the PCM (Powertrain Control Module) connectors. Make sure they seat and latch correctly.

5. Operate the system and determine if the concern is still present.

Is the concern still present?