C150B
C150B - Right Front Tire Pressure Trigger Module Voltage High
For a complete wiring diagram, refer to.
Theory of Operation
The Tire Pressure Monitoring (TPM) Transponder 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 Ignition Node (WIN) over a LIN bus. When activated, the module will generate a 125 KHz signal of sufficient field strength to trigger the Tire Pressure Monitoring (TPM) Sensor and force a low frequency RF transmission from the sensor.
• When Monitored: Continuously.
• Set Condition: The Wireless Ignition Node (WIN) receives a message from the Tire Pressure Monitoring (TPM) Transponder indicating that an over voltage condition has been detected.
Test Step 1 - DTC STATUS IS ACTIVE
• If the incorrect Placard Values were programmed into the WIN, a DTC could be set. Before continuing with any TPM diagnostic test, using the scan tool, check that the correct Placard Values have been programmed in to the module.
• Ignition on, engine not running.
• If a system or battery voltage high DTC is set in the Wireless Ignition Node (WIN) or in the PCM, repair the voltage DTC before continuing with this test.
• With the scan tool, read DTCs.
Is the DTC status Active at this time?
Yes
• Go to Test Step 2 => [ Test Step 2 - (F943) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN
OR HIGH RESISTANCE ]
No
• Go to Test Step 5 => [ Test Step 5 - INTERMITTENT TIRE PRESSURE TRIGGER MODULE DTC ]
Test Step 2 - (F943) 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 (F943) Fused Ignition Switch Output (Run) circuit.
• 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 brightly?
Yes
• Go to Test Step 3 => [ Test Step 3 - (Z904) GROUND CIRCUIT(S) OPEN OR HIGH RESISTANCE ]
No
• Repair the (F943) Fused Ignition Switch Output (Run) circuit for an open circuit or high resistance.
• Perform TPM Verification Test. Refer to => Non-DTC
Based Diagnostics. Tire Pressure Monitor Verification Test
Test Step 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).
• 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 brightly?
Yes
• Go to Test Step 4 => [ Test Step 4 - TIRE PRESSURE TRIGGER MODULE ]
No
• Repair the (Z904) Ground circuit(s) for an open circuit or high resistance.
• Perform TPM Verification Test. Refer to => Non-DTC
Based Diagnostics. Tire Pressure Monitor Verification Test
Test Step 4 - TIRE PRESSURE TRIGGER MODULE
• Turn the ignition off.
• Replace the Tire Pressure Monitoring (TPM) Transponder in accordance with the Service Information.
• With the scan tool, erase DTCs.
• Test Drive the vehicle for a minimum of 20 minutes with vehicle speed greater than 15 mph (24 km/h).
• With the scan tool, read DTCs.
Does the DTC reset or is the status Active for this DTC?
Yes
• Replace the wireless ignition node.
• Perform TPM Verification Test. Refer to => Non-DTC
Based Diagnostics. Tire Pressure Monitor Verification Test
No
• Test Complete.
• Perform TPM Verification Test. Refer to => Non-DTC
Based Diagnostics. Tire Pressure Monitor Verification Test
Test Step 5 - 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, erase DTCs.
• Test Drive the vehicle for a minimum of 20 minutes with vehicle speed greater than 15 m.p.h.
• With the scan tool, read DTCs.
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 => Non-DTC
Based Diagnostics. Tire Pressure Monitor Verification Test