Wireless Control Module (Wcm) - Electrical Diagnostics: Other Jeep Compass I рестайлинг 2

B1A08-RKE FOB 1 PERFORMANCE

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

WHEN MONITORED

Continuously.

SET CONDITION

Scrambled messages to the Wireless Control Module from the transmitter.

Note. The most probable cause for this code to set is if the Wireless Control Module (WCM) senses over 150 presses from the RKE transmitter, when it is out of range.

POSSIBLE CAUSES

B1A09-RKE FOB 2 PERFORMANCE

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously.

Scrambled messages to the Wireless Control Module from the transmitter.

Note. The most probable cause for this code to set is if the Wireless Control Module (WCM) senses over 150 presses from the RKE transmitter, when it is out of range.

B1A0A-RKE FOB 3 PERFORMANCE

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously.

Scrambled messages to the Wireless Control Module from the transmitter.

Note. The most probable cause for this code to set is if the Wireless Control Module (WCM) senses over 150 presses from the RKE transmitter, when it is out of range.

B1A0B-RKE FOB 4 PERFORMANCE

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously.

Scrambled messages to the Wireless Control Module from the transmitter.

Note. The most probable cause for this code to set is if the Wireless Control Module (WCM) senses over 150 presses from the RKE transmitter, when it is out of range.

B1A0C-RKE FOB 5 PERFORMANCE

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously.

Scrambled messages to the Wireless Control Module from the transmitter.

Note. The most probable cause for this code to set is if the Wireless Control Module (WCM) senses over 150 presses from the RKE transmitter, when it is out of range.

B1A0D-RKE FOB 6 PERFORMANCE

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously.

Scrambled messages to the Wireless Control Module from the transmitter.

Note. The most probable cause for this code to set is if the Wireless Control Module (WCM) senses over 150 presses from the RKE transmitter, when it is out of range.

B1A0E-RKE FOB 7 PERFORMANCE

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously.

Scrambled messages to the Wireless Control Module from the transmitter.

Note. The most probable cause for this code to set is if the Wireless Control Module (WCM) senses over 150 presses from the RKE transmitter, when it is out of range.

B1A0F-RKE FOB 8 PERFORMANCE

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously.

Scrambled messages to the Wireless Control Module from the transmitter.

Note. The most probable cause for this code to set is if the Wireless Control Module (WCM) senses over 150 presses from the RKE transmitter, when it is out of range.

B1A10-RKE FOB 1 BATTERY LOW

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously.

When the Wireless Control Module (WCM) senses that the RKE transmitter signal is not as strong as it ought to be, this code will set.

B1A11-RKE FOB 2 BATTERY LOW

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously.

When the Wireless Control Module (WCM) senses that the RKE transmitter signal is not as strong as it ought to be, this code will set.

B1A12-RKE FOB 3 BATTERY LOW

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously.

When the Wireless Control Module (WCM) senses that the RKE transmitter signal is not as strong as it ought to be, this code will set.

B1A13-RKE FOB 4 BATTERY LOW

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously.

When the Wireless Control Module (WCM) senses that the RKE transmitter signal is not as strong as it ought to be, this code will set.

B1A14-RKE FOB 5 BATTERY LOW

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously.

When the Wireless Control Module (WCM) senses that the RKE transmitter signal is not as strong as it ought to be, this code will set.

B1A15-RKE FOB 6 BATTERY LOW

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously.

When the Wireless Control Module (WCM) senses that the RKE transmitter signal is not as strong as it ought to be, this code will set.

B1A16-RKE FOB 7 BATTERY LOW

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously.

When the Wireless Control Module (WCM) senses that the RKE transmitter signal is not as strong as it ought to be, this code will set.

B1A17-RKE FOB 8 BATTERY LOW

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously.

When the Wireless Control Module (WCM) senses that the RKE transmitter signal is not as strong as it ought to be, this code will set.

B1A23-RKE RECEIVER PERFORMANCE

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously.

When the Wireless Control Module (WCM) senses that the RKE signal is jammed, this code will set.

B1A24-KEY NOT PROGRAMMED

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

With the ignition on.

B1A25-INVALID KEY

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

At ignition on and during Key Programming Mode.

When the Sentry Key Remote Entry Module (SKREEM) also known as the Wireless Control Module (WCM) does not receive a transponder response after 8 consecutive transponder read attempts within 2.0 seconds. When the key that is being used is programmed for a different vehicle.

B1A26-MAXIMUM NUMBER OF KEYS PROGRAMMED

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

With the ignition on.

When the maximum number of keys (8) have been programmed into the Wireless Control Module (WCM)/Sentry Key Remote Entry Module (SKREEM).

B1A27-SKREEM PROGRAMMING PERFORMANCE

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

With the ignition on.

B1A28-ECM MISMATCH WITH SKIM

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

At ignition on, after ignition on during any rolling code handshake that occurs with the PCM due to a SKIM or PCM reset.

When a PCM/ECM STATUS message with a Valid Key status is not received by the Wireless Control Module (WCM) within 3.5 seconds of transmitting the last Valid Key Code message to the PCM/ECM.

B1A29-SKIM BASESTATION MISMATCH

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

At ignition on, after ignition on during any rolling code handshake that occurs with the Powertrain Control Module (PCM) due to a Sentry Key remote Entry Module (SKREEM) also known as the Wireless Control Module (WCM) or PCM reset.

When a PCM STATUS message with a Valid Key status is not received by the WCM within 3.5 seconds of transmitting the last Valid Key Code message to the PCM.

B1A2A-KEY 1 COMMUNICATION ERROR

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

At ignition on and during Key Programming Mode.

When the Sentry Key remote Entry Module (SKREEM) also known as the Wireless Control Module (WCM) does not receive a transponder response after 8 consecutive transponder read attempts within 2.0 seconds.

B1A2B-KEY 2 COMMUNICATION ERROR

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

At ignition on and during Key Programming Mode.

When the Sentry Key remote Entry Module (SKREEM) also known as the Wireless Control Module (WCM) does not receive a transponder response after 8 consecutive transponder read attempts within 2.0 seconds.

B1A2C-KEY 3 COMMUNICATION ERROR

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

At ignition on and during Key Programming Mode.

When the Sentry Key remote Entry Module (SKREEM) also known as the Wireless Control Module (WCM) does not receive a transponder response after 8 consecutive transponder read attempts within 2.0 seconds.

B1A2D-KEY 4 COMMUNICATION ERROR

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

At ignition on and during Key Programming Mode.

When the Sentry Key remote Entry Module (SKREEM) also known as the Wireless Control Module (WCM) does not receive a transponder response after 8 consecutive transponder read attempts within 2.0 seconds.

B1A2E-KEY 5 COMMUNICATION ERROR

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

At ignition on and during Key Programming Mode.

When the Sentry Key remote Entry Module (SKREEM) also known as the Wireless Control Module (WCM) does not receive a transponder response after 8 consecutive transponder read attempts within 2.0 seconds.

B1A2F-KEY 6 COMMUNICATION ERROR

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

At ignition on and during Key Programming Mode.

When the Sentry Key remote Entry Module (SKREEM) also known as the Wireless Control Module (WCM) does not receive a transponder response after 8 consecutive transponder read attempts within 2.0 seconds.

B1A30-KEY 7 COMMUNICATION ERROR

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

At ignition on and during Key Programming Mode.

When the Sentry Key remote Entry Module (SKREEM) also known as the Wireless Control Module (WCM) does not receive a transponder response after 8 consecutive transponder read attempts within 2.0 seconds.

B1A31-KEY 8 COMMUNICATION ERROR

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

At ignition on and during Key Programming Mode.

When the Sentry Key remote Entry Module (SKREEM) also known as the Wireless Control Module (WCM) does not receive a transponder response after 8 consecutive transponder read attempts within 2.0 seconds.

B1A35-UNIDENTIFIED KEY COMMUNICATION ERROR

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

At ignition on and during Key Programming Mode.

When the Sentry Key remote Entry Module (SKREEM) also known as the Wireless Control Module (WCM) does not receive a transponder response after 8 consecutive transponder read attempts within 2.0 seconds.

With the ignition switch on.

The SKREEM has detected the ignition switch input voltage below a calibrated value.

Scheme 21

1. DETERMINING IF DIAGNOSTIC TROUBLE CODE (DTC) IS CURRENT NOTE: Diagnose any related Powertrain DTCs before continuing. With a scan tool, read and record DTCs. With the scan tool, clear DTCs. Perform 5 ignition cycles, leaving the ignition switch on for a minimum of 90 seconds per cycle. Using the scan tool, read DTCs. Does the DTC reset? Yes Go To 3 No Go To 2
2. INTERMITTENT CONDITION NOTE: Check for any of the follow conditions: Poor wire to terminal connection Corroded terminals Backed out or loose terminals Broken wire internal to the insulation Dirty (partial) module ground With the ignition on, wiggle the related wires. Using a scan tool, read DTCs. Does the DTC reset? Yes Repair the wiring as necessary. Perform the WCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) . No DTC is not active at this time. Test complete.
3. FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT OPEN NOTE: Check the related fuses to the Fused Ignition Switch Output (Run-Start) circuit. If the fuse is found to be open, repair the circuit for a shorted condition. Turn the ignition off. Disconnect the WCM harness connector. Turn the ignition on. Using a 12 volt test light connected to ground, probe the Fused Ignition Switch Output (Run-Start) circuit in the SKREEM harness connector. Does the test light illuminate brightly? Yes Go to 4 No Repair the Fused Ignition Switch Output (Run-Start) circuit for an open. Perform the WCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
4. WCM NOTE: A dirty (partial) ground can cause abnormal conditions within a system. Ensure the module has a good ground before continuing. Turn the ignition off. Reconnect the WCM connector Back probe the Fused Ignition Switch Output (Run-Start) circuit. Start the engine. Using the scan tool, view battery voltage under Data Display in the Engine category. Compare the voltage on the scan tool to the voltage reading on the voltmeter. Is the voltage on the scan tool equal to the voltmeter reading +/-.5 volt? Yes Replace and program the Wireless Control Module in accordance with the Service Information. Perform the WCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) . No Repair the Fused Ignition Switch Output (Run-Start) circuit for high resistance. Perform the WCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .

With the ignition switch on.

The Sentry Key remote Entry Module (SKREEM) also known as the Wireless Control Module (WCM) has detected the ignition switch input voltage above a calibrated value.

Scheme 22

1. DETERMINING IF DIAGNOSTIC TROUBLE CODE (DTC) IS CURRENT NOTE: Diagnose any related Powertrain DTCs before continuing. With a scan tool, read and record DTCs. With the scan tool, clear DTCs. Perform 5 ignition cycles, leaving the ignition switch on for a minimum of 90 seconds per cycle. Using the scan tool, read DTCs. Does the DTC reset? Yes Go To 3 No Go To 2
2. INTERMITTENT CONDITION NOTE: Check for any of the follow conditions: Poor wire to terminal connection Corroded terminals Backed out or loose terminals Broken wire internal to the insulation Dirty (partial) module ground With the ignition on, wiggle the related wires. Using a scan tool, read DTCs. Does the DTC reset? Yes Repair the wiring as necessary. Perform the WCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) . No DTC is not active at this time. Test complete.
3. FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT SHORTED TO BATTERY VOLTAGE NOTE: A dirty (partial) ground can cause abnormal conditions within a system. Ensure the module has a good ground before continuing. Turn the ignition off. Disconnect the WCM harness connector. Using a 12 volt test light connected to ground, probe the Fused Ignition Switch Output (Run-Start) circuit in the WCM harness connector. Does the test light illuminate brightly? Yes Repair the Fused Ignition Switch Output (Run-Start) circuit for a short to voltage. Perform the WCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) . No Replace and program the SKREEM in accordance with the Service Information. Perform the WCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .

B210A-SYSTEM VOLTAGE LOW

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

With the ignition switch on.

The Sentry Key remote Entry Module (SKREEM) also known as the Wireless Control Module (WCM) has detected the system voltage is below a calibrated value.

Scheme 23

1. DETERMINING IF DIAGNOSTIC TROUBLE CODE (DTC) IS CURRENT NOTE: Diagnose any related Powertrain DTCs before continuing. With a scan tool, read and record DTCs. With the scan tool, clear DTCs. Perform 5 ignition cycles, leaving the ignition switch on for a minimum of 90 seconds per cycle. Using the scan tool, read DTCs. Does the DTC reset? Yes Go To 3 No Go To 2
2. INTERMITTENT CONDITION NOTE: Check for any of the follow conditions: Poor wire to terminal connection Corroded terminals Backed out or loose terminals Broken wire internal to the insulation Dirty (partial) module ground With the ignition on, wiggle the related wires. Using a scan tool, read DTCs. Does the DTC reset? Yes Repair the wiring as necessary. Perform the WCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) . No DTC is not active at this time. Test complete.
3. FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT OPEN NOTE: Check the related fuses to the Fused Ignition Switch Output (Run-Start) circuit. If the fuse is found to be open repair the circuit for a shorted condition. Turn the ignition off. Disconnect the WCM harness connector. Turn the ignition on. Using a 12 volt test light connected to ground, probe the Fused Ignition Switch Output (Run-Start) circuit in the WCM harness connector. Does the test light illuminate brightly? Yes Go to 4 No Repair the Fused Ignition Switch Output (Run-Start) circuit for an open. Perform the WCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
4. FUSED (B+) CIRCUIT OPEN Turn the ignition off. Using a 12 volt test light connected to ground, probe the Fused (B+) circuit in the WCM harness connector. Does the test light illuminate brightly? Yes Go to 5 No Repair the Fused (B+) circuit for an open. Perform the WCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
5. SKREEM NOTE: Repeat the below procedure for both the Fused Ignition Switch Output (Run-Start) circuit and the Fused (B+) circuit. NOTE: A dirty (partial) ground can cause abnormal conditions within a system. Ensure the module has a good ground before continuing. Turn the ignition off. Reconnect the WCM connector. Back probe the Fused Ignition Switch Output (Run-Start) circuit and then the Fused (B+) circuit. Start the engine. Using the scan tool, view battery voltage under Data Display in the Engine category. Compare the voltage on the scan tool to the voltage reading on the voltmeter. Is the voltage on the scan tool equal to the voltmeter reading +/-.5 volt? Yes Replace and program the Wireless Control Module in accordance with the Service Information. Perform the WCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) . No Repair the circuit(s) that indicated the incorrect voltage. Perform the WCM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .

B210B-SYSTEM VOLTAGE HIGH

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

With the ignition switch on.

The Sentry Key remote Entry Module (SKREEM) also known as the Wireless Control Module (WCM) has detected the system voltage above a calibrated value.

B210D-BATTERY VOLTAGE LOW

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

With the ignition switch on.

The Sentry Key remote Entry Module (SKREEM) also known as the Wireless Control Module (WCM) has detected the Fused (B+) input voltage below a calibrated value.

B210E-BATTERY VOLTAGE HIGH

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

With the ignition switch on.

The Sentry Key remote Entry Module (SKREEM) also known as the Wireless Control Module (WCM) has detected the Fused (B+) input voltage above a calibrated value.

With the ignition on.

The Wireless Control Module (WCM)/Sentry Key Remote Entry Module (SKREEM) receives different information than is configured within the module. Examples include Model Year, Country Code, Body Style, Platform, Remote Start, Sun Roof.

At ignition on, after ignition on during any rolling code handshake that occurs with the Powertrain Control Module (PCM) due to a Sentry Key remote Entry Module (SKREEM) also known as the Wireless Control Module (WCM) or PCM reset.

A valid key is recognized but the programmed VIN does not match between the WCM and PCM/ECM.

With the ignition on.

Wireless Control Module (WCM)/Sentry Key Remote Entry Module (SKREEM) watchdog resets.

With the ignition on.

With the ignition on.

When the Antenna diagnostic test fails.

Continuously.

A low pressure condition will exist when the tire pressure falls below or is equal to the low pressure threshold value as specified for the vehicle.

With vehicle speed greater than 24 km/h (15 mph).

The Wireless Control Module (WCM) will monitor the signals from the four active Tire Pressure Monitoring (TPM) Sensors. A loss of signal error is detected if data are not received or cannot be accurately decoded over 16 consecutive blocks or minimum of 10 minutes when the vehicle speed is above 24 km/h (15 mph). An internal TPM Sensor hardware error condition will be set when an error in the accelerometer, pressure sensor, or temperature sensor is detected. The Tire Pressure Monitoring (TPM) Telltale Lamp will flash on and off for 75 seconds then remain on solid when a system fault is detected.

Note. A system fault can occur by many scenarios, including the following: Signal interference due to electronic devices or driving next to facilities emitting the same Radio Frequencies as the TPM sensors. Installing aftermarket window tinting that affects radio wave signals. Accumulation of snow or ice around the wheels or wheel housings. Using tire chains on the vehicle. Using wheels/tires not equipped with TPM Sensors.

With vehicle speed greater than 24 km/h (15 mph).

The Wireless Control Module (WCM) will monitor the signals from the four active Tire Pressure Monitoring (TPM) Sensors. A loss of signal error is detected if data are not received or cannot be accurately decoded over 16 consecutive blocks or minimum of 10 minutes when the vehicle speed is above 24 km/h (15 mph). An internal TPM Sensor hardware error condition will be set when an error in the accelerometer, pressure sensor, or temperature sensor is detected. The Tire Pressure Monitoring (TPM) Telltale Lamp will flash on and off for 75 seconds then remain on solid when a system fault is detected.

Note. A system fault can occur by many scenarios, including the following: Signal interference due to electronic devices or driving next to facilities emitting the same Radio Frequencies as the TPM sensors. Installing aftermarket window tinting that affects radio wave signals. Accumulation of snow or ice around the wheels or wheel housings. Using tire chains on the vehicle. Using wheels/tires not equipped with TPM Sensors.

With vehicle speed greater than 24 km/h (15 mph).

The Wireless Control Module (WCM) will monitor the signals from the four active Tire Pressure Monitoring (TPM) Sensors. A loss of signal error is detected if data are not received or cannot be accurately decoded over 16 consecutive blocks or minimum of 10 minutes when the vehicle speed is above 24 km/h (15 mph). An internal TPM Sensor hardware error condition will be set when an error in the accelerometer, pressure sensor, or temperature sensor is detected. The Tire Pressure Monitoring (TPM) Telltale Lamp will flash on and off for 75 seconds then remain on solid when a system fault is detected.

Note. A system fault can occur by many scenarios, including the following: Signal interference due to electronic devices or driving next to facilities emitting the same Radio Frequencies as the TPM sensors. Installing aftermarket window tinting that affects radio wave signals. Accumulation of snow or ice around the wheels or wheel housings. Using tire chains on the vehicle. Using wheels/tires not equipped with TPM Sensors.

With vehicle speed greater than 24 km/h (15 mph).

The Wireless Control Module (WCM) will monitor the signals from the four active Tire Pressure Monitoring (TPM) Sensors. A loss of signal error is detected if data are not received or cannot be accurately decoded over 16 consecutive blocks or minimum of 10 minutes when the vehicle speed is above 24 km/h (15 mph). An internal TPM Sensor hardware error condition will be set when an error in the accelerometer, pressure sensor, or temperature sensor is detected. The Tire Pressure Monitoring (TPM) Telltale Lamp will flash on and off for 75 seconds then remain on solid when a system fault is detected.

Note. A system fault can occur by many scenarios, including the following: Signal interference due to electronic devices or driving next to facilities emitting the same Radio Frequencies as the TPM sensors. Installing aftermarket window tinting that affects radio wave signals. Accumulation of snow or ice around the wheels or wheel housings. Using tire chains on the vehicle. Using wheels/tires not equipped with TPM Sensors.

Continuously.

The WCM (TPM) will monitor the messages from each Tire Pressure Trigger Module over the LIN bus. If any of the messages are not received, or are received other than as expected, a DTC will set. When the condition is corrected, or is no longer detected, as acknowledged via a LIN bus message, the WCM will reset the appropriate trigger module fault status.

Continuously.

The Wireless Control Module (WCM) will monitor the messages from each Tire Pressure Trigger Module over the LIN bus. If any of the messages are not received, or are received other than as expected, a DTC will set. When the condition is corrected, or is no longer detected, as acknowledged via a LIN bus message, the WCM will reset the appropriate trigger module fault status.

Continuously.

The Wireless Control Module (WCM) will monitor the messages from each Tire Pressure Trigger Module over the LIN bus. If any of the messages are not received, or are received other than as expected, a DTC will set. When the condition is corrected, or is no longer detected, as acknowledged via a LIN bus message, the WCM will reset the appropriate trigger module fault status.

C150A-LEFT FRONT TIRE PRESSURE TRIGGER MODULE VOLTAGE HIGH

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article

Continuously.

The Wireless Control Module (WCM) receives a message from the Tire Pressure Trigger Module indicating that an over voltage condition has been detected.

Scheme 24

Scheme 25

1. DTC STATUS IS ACTIVE Ignition on, engine not running. NOTE: If a system or battery voltage high DTC is set in the Wireless Control Module (WCM) or in the PCM, repair the voltage DTC before continuing with this test. With the scan tool, select View DTCs in the Wireless Control Module (WCM). Is the DTC status Active at this time? Yes Go To 2 No Go To 6
2. (F202) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN OR HIGH RESISTANCE Ignition on, engine not running. Using a 12-volt test light connect to ground, check the (F202) Fused Ignition Switch Output (Run) circuit. NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery. Is the test light illuminated and bright? Yes Go To 3 No Repair the (F202) Fused Ignition Switch Output (Run) circuit for an open circuit or high resistance. Perform TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
3. (Z904) GROUND CIRCUIT(S) OPEN OR HIGH RESISTANCE Using a 12-volt test light connect to 12 volts, check each of the (Z904) Ground circuit(s). NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery. Is the test light illuminated and bright? Yes Go To 4 No Repair the (Z904) Ground circuit(s) for an open circuit or high resistance. Perform TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
4. TIRE PRESSURE TRIGGER MODULE Turn the ignition off. Replace the appropriate Tire Pressure Trigger Module in accordance with the Service Information. With the scan tool, clear DTCs in the Wireless Control Module (WCM). Test Drive the vehicle for a minimum of 10 minutes with vehicle speed greater than 15 mph (24 km/h). With the scan tool, select View DTCs in the Wireless Control Module (WCM). Does the DTC reset or is the status Active for this DTC? Yes Go To 5 No Test Complete. Perform TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
5. WIRELESS CONTROL MODULE (WCM) View repair. Repair Replace the Wireless Control Module (WCM) in accordance with the Service Information. Perform TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
6. INTERMITTENT TIRE PRESSURE TRIGGER MODULE DTC The conditions necessary to set this DTC are not present at this time. Refer to any Technical Service Bulletins that may apply to this condition. With the scan tool, clear DTCs in the Wireless Control Module (WCM). Test Drive the vehicle for a minimum of 10 minutes with vehicle speed greater than 15 mph (24 km/h). With the scan tool, select View DTCs in the Wireless Control Module (WCM). Does the DTC reset or is the status Active for this DTC? Yes Return to the first step of this test and perform the diagnostic procedure. No Test complete. Perform TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .

C150C-LEFT REAR TIRE PRESSURE TRIGGER MODULE VOLTAGE HIGH

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article

Continuously.

The Wireless Control Module (WCM) receives a message from the Tire Pressure Trigger Module indicating that an over voltage condition has been detected.

Scheme 26

1. DTC STATUS IS ACTIVE Ignition on, engine not running. NOTE: If a system or battery voltage high DTC is set in the Wireless Control Module (WCM) or in the PCM, repair the voltage DTC before continuing with this test. With the scan tool, select View DTCs in the Wireless Control Module (WCM). Is the DTC status Active at this time? Yes Go To 2 No Go To 6
2. (F202) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN OR HIGH RESISTANCE Ignition on, engine not running. Using a 12-volt test light connect to ground, check the (F202) Fused Ignition Switch Output (Run) circuit. NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery. Is the test light illuminated and bright? Yes Go To 3 No Repair the (F202) Fused Ignition Switch Output (Run) circuit for an open circuit or high resistance. Perform TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
3. (Z904) GROUND CIRCUIT(S) OPEN OR HIGH RESISTANCE Using a 12-volt test light connect to 12 volts, check each of the (Z904) Ground circuit(s). NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery. Is the test light illuminated and bright? Yes Go To 4 No Repair the (Z904) Ground circuit(s) for an open circuit or high resistance. Perform TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
4. TIRE PRESSURE TRIGGER MODULE Turn the ignition off. Replace the appropriate Tire Pressure Trigger Module in accordance with the Service Information. With the scan tool, clear DTCs in the Wireless Control Module (WCM). Test Drive the vehicle for a minimum of 10 minutes with vehicle speed greater than 15 mph (24 km/h). With the scan tool, select View DTCs in the Wireless Control Module (WCM). Does the DTC reset or is the status Active for this DTC? Yes Go To 5 No Test Complete. Perform TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
5. WIRELESS CONTROL MODULE (WCM) View repair. Repair Replace the Wireless Control Module (WCM) in accordance with the Service Information. Perform TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
6. INTERMITTENT TIRE PRESSURE TRIGGER MODULE DTC The conditions necessary to set this DTC are not present at this time. Refer to any Technical Service Bulletins that may apply to this condition. With the scan tool, clear DTCs in the Wireless Control Module (WCM). Test Drive the vehicle for a minimum of 10 minutes with vehicle speed greater than 15 mph (24 km/h). With the scan tool, select View DTCs in the Wireless Control Module (WCM). Does the DTC reset or is the status Active for this DTC? Yes Return to the first step of this test and perform the diagnostic procedure. No Test complete. Perform TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .

C150D-RIGHT REAR TIRE PRESSURE TRIGGER MODULE VOLTAGE HIGH

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article

Continuously.

The Wireless Control Module (WCM) receives a message from the Tire Pressure Trigger Module indicating that an over voltage condition has been detected.

Scheme 27

1. DTC STATUS IS ACTIVE Ignition on, engine not running. NOTE: If a system or battery voltage high DTC is set in the Wireless Control Module (WCM) or in the PCM, repair the voltage DTC before continuing with this test. With the scan tool, select View DTCs in the Wireless Control Module (WCM). Is the DTC status Active at this time? Yes Go To 2 No Go To 6
2. (F202) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN OR HIGH RESISTANCE Ignition on, engine not running. Using a 12-volt test light connect to ground, check the (F202) Fused Ignition Switch Output (Run) circuit. NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery. Is the test light illuminated and bright? Yes Go To 3 No Repair the (F202) Fused Ignition Switch Output (Run) circuit for an open circuit or high resistance. Perform TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
3. (Z965) GROUND CIRCUIT(S) OPEN OR HIGH RESISTANCE Using a 12-volt test light connect to 12 volts, check each of the (Z965) Ground circuit(s). NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery. Is the test light illuminated and bright? Yes Go To 4 No Repair the (Z965) Ground circuit(s) for an open circuit or high resistance. Perform TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
4. TIRE PRESSURE TRIGGER MODULE Turn the ignition off. Replace the appropriate Tire Pressure Trigger Module in accordance with the Service Information. With the scan tool, clear DTCs in the Wireless Control Module (WCM). Test Drive the vehicle for a minimum of 10 minutes with vehicle speed greater than 15 mph (24 km/h). With the scan tool, select View DTCs in the Wireless Control Module (WCM). Does the DTC reset or is the status Active for this DTC? Yes Go To 5 No Test Complete. Perform TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
5. WIRELESS CONTROL MODULE (WCM) View repair. Repair Replace the Wireless Control Module (WCM) in accordance with the Service Information. Perform TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
6. INTERMITTENT TIRE PRESSURE TRIGGER MODULE DTC The conditions necessary to set this DTC are not present at this time. Refer to any Technical Service Bulletins that may apply to this condition. With the scan tool, clear DTCs in the Wireless Control Module (WCM). Test Drive the vehicle for a minimum of 10 minutes with vehicle speed greater than 15 mph (24 km/h). With the scan tool, select View DTCs in the Wireless Control Module (WCM). Does the DTC reset or is the status Active for this DTC? Yes Return to the first step of this test and perform the diagnostic procedure. No Test complete. Perform TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .

C151C-TIRE PRESSURE MONITORING (TPM) SENSORS MISSING

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article

With vehicle speed greater than 15 m.p.h. (24 km/h).

The Wireless Control Module (WCM) will monitor the signals from the four active road tire sensors. A loss of signal error is detected when eight consecutive blocks of data are not received or cannot be accurately decoded. An internal sensor hardware error condition will be set when an error in the accelerometer, pressure sensor, or temperature sensor is detected.

During vehicle TPM Sensor locate process.

The vehicle TPM Sensor locate process must fail three consecutive times.

Scheme 28

Scheme 29

Scheme 30

Scheme 31

Scheme 32

1. VERIFY DTC IS ACTIVE NOTE: Before continuing with this diagnostic procedure, perform the appropriate diagnostic procedure for all other DTCs first. NOTE: Before continuing with this diagnostic procedure, verify the harness is not damaged to the WCM and or the TPM Transponders. Ignition on, engine not running. With the scan tool, read and record DTCs. With the scan tool, erase DTCs. Cycle the ignition switch. With the scan tool, read DTCs. Is the DTC status Active at this time? Yes Go To 2 No Go To 9
2. TIRE PRESSURE MONITORING (TPM) TRANSPONDERS NOTE: For the proper locations of the TPM Transponders, refer to the appropriate service information. Turn the ignition off. Disconnect the three TPM Transponder harness connectors. Ignition on, engine not running. With a voltmeter, measure the voltage between the (F202) Fused Ignition Switch Output (Run) circuit and the ground circuit(s) at each of the three TPM Transponder harness connectors. Was the voltage within battery voltage (±1 Volt) at each of the TPM Transponders? Yes Go To 8 No Perform the following diagnostic procedure on each of the failed TPM Transponders. Go To 3
3. (F202) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN OR HIGH RESISTANCE Using a 12-volt test light connect to ground, check the (F202) Fused Ignition Switch Output (Run) circuit at the TPM Transponder harness connector. NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery. Is the test light illuminated and bright? Yes Go To 4 No Repair the (F202) Fused Ignition Switch Output (Run) circuit for an open circuit or high resistance. Perform the TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
4. GROUND CIRCUIT(S) OPEN OR HIGH RESISTANCE Turn the ignition off. Using a 12-volt test light connect to battery voltage, check the Ground circuit(s) at the TPM Transponder harness connector. NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery. Does the test light illuminate brightly? Yes Go To 5 No Repair the Ground circuit(s) for an open circuit or high resistance. Perform the TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
5. (D508) COM - LIN TIRE PRESSURE MONITOR LAN CIRCUIT SHORT TO VOLTAGE Turn the ignition off. Disconnect the WCM harness connector. Ignition on, engine not running. Measure the voltage of the (D508) COM - LIN Tire Pressure Monitor LAN circuit at the TPM Transponder harness connector. Is there any voltage present? Yes Repair the (D508) COM - LIN Tire Pressure Monitor LAN circuit for a short to voltage. Perform the TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) . No Go To 6
6. (D508) COM - LIN TIRE PRESSURE MONITOR LAN CIRCUIT SHORT TO GROUND Turn the ignition off. Measure the resistance between ground and the (D508) COM - LIN Tire Pressure Monitor LAN circuit at the TPM Transponder harness connector. Is the resistance below 5 Ohms? Yes Repair the (D508) COM - LIN Tire Pressure Monitor LAN circuit for a short to ground. Perform the TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) . No Go To 7
7. (D508) COM - LIN TIRE PRESSURE MONITOR LAN CIRCUIT OPEN OR HIGH RESISTANCE Use a jumper wire with one end connected to ground and the other to the (D508) COM - LIN Tire Pressure Monitor LAN circuit at the WCM harness connector. Using a 12-Volt test light connected to battery voltage, check the (D508) COM - LIN Tire Pressure Monitor LAN circuit at the TPM Transponder harness connector. NOTE: The test light should be illuminated and bright. Compared the brightness to that of a direct connection to the battery. Does the test light illuminate brightly? Yes Go To 8 No Repair the (D508) COM - LIN Tire Pressure Monitor LAN circuit for an open. Perform the TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
8. CHECK FOR ADDITIONAL TIRE PRESSURE MONITORING (TPM) TRANSPONDER COMMUNICATION RELATED DTCs With the scan tool, select Network View and select Advanced. Is there more than one module with active DTCs Logged Against the WCM? Yes Replace the Wireless Control Module (WCM) in accordance with the Service Information. Perform the TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) . No Replace the Tire Pressure Monitoring (TPM) Transponder in accordance with the service information. Perform the TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
9. INTERMITTENT TIRE PRESSURE MONITORING (TPM) TRANSPONDER DTC NOTE: The conditions that set the DTC are not present at this time. The following list may help in identifying the intermittent condition. Perform any Technical Service Bulletins (TSBs) that may apply. Review the scan tool Environmental Data (EV Data). If possible, try to duplicate the conditions under which the DTC set. While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors. If numerous trouble codes were set, use a wire schematic and look for any common ground or supply circuits Turn the ignition off. Using the wiring schematic as a guide, inspect the related wire harness. Disconnect all the related harness connectors. Look for any chafed, pierced, pinched, partially broken wires and broken, bent, pushed out, or corroded terminals. Were any problems found? Yes Perform the necessary repairs. Perform the TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) . No Test complete. Perform the TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .

Continuously

Whenever the CAN B Bus (+) or CAN Bus (-) circuit is open, shorted to voltage or shorted to ground.

Scheme 33

Scheme 34

1. CHECK FOR ACTIVE DIAGNOSTIC TROUBLE CODE (DTC)s With the scan tool, read the active DTCs. Cycle the ignition switch from off to on at least five times, leaving the ignition on for a minimum of 90 seconds per cycle. With the scan tool, read the active DTCs. Does the scan tool display: U0019-CAN B BUS as active? Yes Go To 2 No Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and poor pin fit.
2. CHECK TIPM DTCs With the scan tool, read the TIPM active DTCs. Does the scan tool display any CAN B BUS DTCs as Active? Yes Refer to «DIAGNOSIS AND TESTING»(ref-612759-S36373688252014043000000) and perform the appropriate diagnostic procedure. No Go To 3
3. (D55) CAN B BUS (+) CIRCUIT OPEN Turn the ignition off. Disconnect the negative battery cable. Disconnect the WCM (SKREEM) harness connector. Disconnect the TIPM harness connector. Measure the resistance of the (D55) CAN B Bus (+) circuit between the TIPM harness connector and the WCM harness connector. Is the resistance below 2.0 Ohms? Yes Go To 4 No Repair the open in the (D55) CAN B Bus (+) circuit. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612758-S33453045902014043000000) .
4. (D54) CAN B BUS (-) CIRCUIT OPEN Measure the resistance of the (D54) CAN B Bus (-) circuit between the TIPM harness connector and the WCM harness connector. Is the resistance below 2.0 Ohms? Yes Replace the Wireless Control Module (WCM) (SKREEM) in accordance with the Service Information. Refer to «MODULE, SENTRY KEY IMMOBILIZER (SKREEM), REMOVAL»(ref-612730-S20913057452014043000000) . Perform the SKIS IDENTIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612730-S33284552522014043000000) . No Repair the open in the (D54) CAN B Bus (-) circuit. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612758-S33453045902014043000000) .

Continuously when the ignition is on.

The battery voltage between 10.0 and 16.0 Volts.

Ignition Off Draw (IOD) fuse installed.

Totally Integrated Power Module (TIPM) is configured correctly.

Bus messages not received from the Totally Integrated Power Module (TIPM) for approximately two to five seconds.

Continuously when the ignition is on.

The battery voltage is between 10 and 16 volts.

Ignition Off Draw (IOD) fuse installed.

Totally Integrated Power Module (TIPM) is configured correctly.

Bus messages not received from the Instrument Cluster (CCN) for approximately two to five seconds.

Continuously when the ignition is on.

Battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fused installed.

Totally Integrated Power Module (TIPM) is configured correctly.

Bus messages not received from the Radio for approximately two to five seconds.

With the ignition on

Battery voltage between 10 and 16 volts

IOD fuse installed

If the Wireless Control Module (WCM) fails to receive bus messages from the Tire pressure trigger module for two consecutive counts of trigger module not responding to a communication check.

Scheme 35

1. DTC STATUS Make sure every trigger module connector is connected and WCM connected. Ignition on, engine not running. With the scan tool, run the "Trigger Module Test Routine" under "Miscellaneous Functions" for the "WCM" and follow the procedure. NOTE: Three trigger modules are located in three of the four wheel wells on the vehicle to provide the WCM with the location of the tire pressure sensors on the vehicle. A fourth transponder is not necessary in the remaining wheel well due to the process-of-elimination theory. Once the system knows the location of the first three sensors it assumes the location of the fourth tire pressure sensor. The locations of the trigger modules can vary for each vehicle. Make sure the vehicle has trigger modules, and that are in the right locations. After every repair, the trigger module test routine must be rerun in order to verify the fix. Did the Left Front Trigger Module have NO as a result? Yes Go To 2 No Repair intermittent condition. Perform the TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
2. (D508) COM-LIN TIRE PRESSURE MONITOR LAN CIRCUIT OPEN Turn the ignition off. Disconnect the Tire Pressure Trigger Module. Disconnect the WCM. With an Ohmmeter measure the resistance of the (D508) COM-LIN TIRE PRESSURE MONITOR LAN CIRCUIT. Is the resistance below 5 Ohms? Yes Go To 3 No Repair or replace the open circuit. Perform the TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
3. (F202) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN OR HIGH RESISTANCE Turn the ignition off. Disconnect the Tire Pressure Transponder harness connector. Ignition on, engine not running. Using a 12-volt test light connect to ground, check the (F202) Fused Ignition Switch Output (Run) circuit. NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery. Is the test light illuminated and bright? Yes Go To 4 No Repair the (F202) Fused Ignition Switch Output (Run) circuit for an open circuit or high resistance. Perform the TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
4. (Z904) GROUND CIRCUIT(S) OPEN OR HIGH RESISTANCE Using a 12-volt test light connect to battery voltage, probe each of the (Z904) Ground circuit(s). NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery. Does the test light illuminate brightly? Yes Go To 5 No Repair the (Z904) Ground circuit(s) for an open circuit or high resistance. Perform the TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
5. (D508) COM - LIN TIRE PRESSURE MONITOR LAN CIRCUIT SHORT TO VOLTAGE Turn the ignition off. Disconnect all three tire pressure transponder harness connectors. Ignition on, engine not running. Measure the voltage of the (D508) COM - LIN Tire Pressure Monitor LAN circuit. Is there any voltage present? Yes Repair the (D508) COM - LIN Tire Pressure Monitor LAN circuit for a short to voltage. Perform the TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) . No Go To 6
6. (D508) COM - LIN TIRE PRESSURE MONITOR LAN CIRCUIT SHORT TO GROUND Turn the ignition off. Measure the resistance between ground and the (D508) COM - LIN Tire Pressure Monitor LAN circuit. Is the resistance below 5.0 Ohms? Yes Repair the (D508) COM - LIN Tire Pressure Monitor LAN circuit for a short to ground. Perform the TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) . No Go To 7
7. (D508) COM - LIN TIRE PRESSURE MONITOR LAN CIRCUIT OPEN OR HIGH RESISTANCE Use a jumper wire with one end connected to ground and the other to the (D508) COM - LIN Tire Pressure Monitor LAN circuit in the Front Left Pressure Tire Transponder harness connector. Using a 12-Volt test light connected to battery voltage, probe the (D508) COM - LIN Tire Pressure Monitor LAN circuit in the TPM harness connector. NOTE: The test light should be illuminated and bright. Compared the brightness to that of a direct connection to the battery. Does the test light illuminate bright? Yes Go To 8 No Repair the (D508) COM - LIN Tire Pressure Monitor LAN circuit for an open circuit or high resistance. Perform the TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
8. POWER AND GROUND CIRCUIT OPEN Ignition on, engine not running. With a voltmeter measure the voltage between the power and ground circuit at the Trigger Module. Is the voltage at least the same as battery voltage? Yes Go To 9 No Repair the open circuit. Perform the TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .
9. CHECK FOR ADDITIONAL TRIGGER MODULE COMMUNICATION RELATED DTCs With the scan tool, select Network View and select Advanced. Is there more than one module with active DTCs "Logged Against" the WCM? Yes Replace/update the WCM in accordance with the service information. Perform the TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) . No Replace the Tire pressure trigger Module in accordance with the service information. Perform the TPM VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-612754-S14654240282014043000000) .

1. With the ignition on
2. Battery voltage between 10 and 16 volts
3. Ignition Off Draw (IOD) fuse installed

If the Wireless Control Module (WCM) fails to receive bus messages from the Tire pressure trigger module for two consecutive counts of trigger module not responding to a communication check.

With the ignition on

Battery voltage between 10 and 16 volts

IOD fuse installed

If the Wireless Control Module (WCM) fails to receive bus messages from the Tire pressure trigger module for two consecutive counts of trigger module not responding to a communication check.

TPM VERIFICATION

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

WIRELESS CONTROL MODULE (WCM) VERIFICATION

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

The Sentry Key remote Entry Module (SKREEM) is also known as the Wireless Control Module (WCM). Depending upon model and year of the vehicle being serviced it may be equipped with either a SKREEM or a WCM.

Perform the following after completion of a diagnostic repair

Note. When entering the PIN, care should be taken because the WCM will only allow 3 consecutive attempts to enter the correct PIN. If 3 consecutive incorrect PIN's are entered the WCM will Lock Out the scan tool. To exit Lock Mode, the ignition key must remain in the Run position for one hour. All accessories must be off. A battery charger connected to the battery during this time period is recommended.

Note. On vehicles equipped with a premium Tire Pressure Monitoring (TPM) system, when the WCM and/or the spare tire pressure sensor is replaced with a new unit, a diagnostic scan tool MUST be used to run a routine that allows the WCM to be programmed with the ID number and location of the spare tire pressure sensor mounted in the wheel of the spare tire. Follow the programming steps outlined in the diagnostic scan tool for "Learn Spare Tire Sensor ID" under "Miscellaneous Functions" for the "WCM/Wireless Control Module" menu item as appropriate. In addition, if the WCM is replaced, the spare tire must be dismounted from its wheel to access and note the ID number on the spare tire pressure sensor so that the ID code for that sensor can be programmed into the new WCM.

1. Reconnect the previously disconnected components and connectors.
2. Obtain the vehicle's unique Personal Identification Number (PIN) assigned to it's original WCM. This number can be obtained from the original vehicle invoice or from your Service Manager or Parts Manager.

PCM/WCM PROGRAMMING

Note. If the PCM and the WCM are replaced at the same time, program the PCM VIN into the PCM first.

Note. The PCM stores the secret key information. If the WCM ever needs to be replaced, the secret key information can be retrieved from the PCM and then transferred to the WCM for security use.

During PCM/ECM replacement, use the following steps to ensure transfer of the secret key information from the WCM to the new PCM

1. First replace the PCM/ECM with the original WCM still connected to the vehicle.
2. Using the appropriate Service Information program the new PCM/ECM. (This will ensure the Secret Key Transfer from the original WCM into the new PCM/ECM).
3. Now replace and program the WCM (if necessary). This will retain the Secret Key from the PCM/ECM back into the new WCM. NOTE: If this vehicle is equipped with a Steering Column Lock Module, it must be replaced along with the WCM.
4. With the scan tool, select Miscellaneous Functions, WCM/Wireless Control Module. Then select the desired procedure and follow the display on the scan tool.
5. If the vehicle is equipped with Tire Pressure Monitoring System program the Placard Pressure Values into the WCM.
6. Ensure all the customer's keys have been programmed into the new module if necessary.
7. With the scan tool, erase all DTCs. Perform 5 ignition key cycles, leaving the key on for at least 90 seconds per cycle.
8. With the scan tool, read WCM DTCs.