Chrysler 300/300 Touring/300C, Dodge Magnum. Manual - part 2105

Theory of Operation

The Tire Pressure Transponder Module is used to automatically learn the location of each wheel sensor on the
vehicle. The module is controlled and activated in sequence by the Wireless Control Module (SKREEM) over a LIN
bus. When activated, the module will generate a 125 KHz signal of sufficient field strength to activate the tire pres-
sure sensor and force a RF transmission from the sensor.

•

When Monitored:
Continuously.

•

Set Condition:
The WCM receives a message from the Tire Pressure Transponder Module indicating that an over voltage
condition has been detected.

Possible Causes

INTERMITTENT TIRE PRESSURE TRANSPONDER MODULE PERFORMANCE DTC

(F500) FUSED RUN RELAY OUTPUT CIRCUIT OPEN OR HIGH RESISTANCE

(Z911) GROUND CIRCUIT(S) OPEN OR HIGH RESISTANCE

TIRE PRESSURE TRANSPONDER MODULE

WIRELESS CONTROL MODULE (SKREEM)

Diagnostic Test

DTC STATUS IS ACTIVE

Turn the ignition on.

NOTE: If a system or battery voltage high DTC is set in the Wireless Control Module (SKREEM) 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 (SKREEM).

Is the DTC status Active at this time?

Yes

>> Go to 2

>> Go to 6

(F500) FUSED RUN RELAY OUTPUT CIRCUIT OPEN OR HIGH RESISTANCE

Turn the ignition on.

Using a 12–volt test light connect to ground, check the (F500) Fused
Run Relay Output 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

>> Repair the (F500) Fused Run Relay Output circuit for an

open circuit or high resistance.

Perform TPM VERIFICATION TEST (Refer to 22 - TIRES/
WHEELS/TIRE PRESSURE MONITORING - DIAGNOSIS
AND TESTING)

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TIRES/WHEELS

(Z911) GROUND CIRCUIT(S) OPEN OR HIGH RESISTANCE

Using a 12–volt test light connect to 12 volts, check each of the (Z911)
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

>> Repair the (Z911) Ground circuit(s) for an open circuit or

high resistance.

Perform TPM VERIFICATION TEST (Refer to 22 - TIRES/
WHEELS/TIRE PRESSURE MONITORING - DIAGNOSIS
AND TESTING)

TIRE PRESSURE TRANSPONDER MODULE

Turn the ignition off.

Replace the appropriate Tire Pressure Transponder Module in accordance with the Service Information.

With the scan tool, clear DTCs in the Wireless Control Module (SKREEM).

Test Drive the vehicle for a minimum of 10 minutes with vehicle speed greater than 15 m.p.h.

With the scan tool, select View DTCs in the Wireless Control Module (SKREEM).

Does the DTC reset or is the status Active for this DTC?

Yes

>> Go to 5

>> Test Complete.

WIRELESS CONTROL MODULE (SKREEM)

View repair.

Repair

Replace the Wireless Control Module (SKREEM) in accordance with the Service Information.

Perform TPM VERIFICATION TEST (Refer to 22 - TIRES/WHEELS/TIRE PRESSURE MONITORING -
DIAGNOSIS AND TESTING)

INTERMITTENT TIRE PRESSURE TRANSPONDER 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 (SKREEM).

Test Drive the vehicle for a minimum of 10 minutes with vehicle speed greater than 15 m.p.h.

With the scan tool, select View DTCs in the Wireless Control Module (SKREEM).

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.

>> Test complete.

TIRES/WHEELS

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TPM VERIFICATION

For a complete wiring diagram Refer to Section 8W.

Diagnostic Test

TPM

Was the WCM/SKREEM replaced during the test procedure?

Yes

>> Go to 2

>> Go to 3

WCM/SKREEM

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

1. Reconnect the previously removed and/or disconnected components and connectors.

2. Obtain the vehicle’s unique Personal Identification Number (PIN) assigned to it’s original SKREEM. This num-
ber can be obtained from the vehicle invoice or from the DaimlerChrysler Customer Center (Phone 1-800-992-
1997).

3. With the scan tool, select Miscellaneous Functions, WCM/Wireless Control Module. Then select the desired
procedure and follow the display on the scan tool.

4. If the WCM/SKREEM was replaced, all the customer’s keys must be programmed to the new module. Use the
scan tool and the Program Key procedure

5. With the scan tool, ease all DTCs. Perform 5 ignition key cycles, leaving the key on for at least 90 seconds
per cycle.

6. Drive the vehicle for a minimum of 10 minutes while maintaining a continuous speed above 15 mph (24 km/h).
During this time the system will learn the new sensor ID code and will clear any DTC(s) automatically.

7. With the scan tool, read WCM/SKREEM DTC(s).

Are there any DTC(s) present?

Yes

>> Repair not complete, refer to the appropriate symptom.

>> Repair is complete.

TIRE PRESSURE SENSOR/TIRE PRESSURE TRANSPONDER REPLACE

1. Reconnect the previously removed and/or disconnected components and connectors.

2. Drive the vehicle for a minimum of 10 minutes while maintaining a continuous speed above 15 mph (24 km/h).
During this time the system will learn the new sensor ID code and will clear any DTC(s) automatically.

3. With the scan tool, read TPM DTC(s).

Are there any DTC(s) present?

Yes

>> Repair not complete, refer to the appropriate symptom.

>> Repair is complete.

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TIRES/WHEELS

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