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. GO to AG22 |
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AG22 VERIFY THE SUPPLEMENTAL RESTRAINT SYSTEM (SRS) PROVES OUT SUCCESSFULLY
REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures). Connect: Driver Side Airbag In-line C345. Connect: Passenger Side Airbag In-line C219. Connect all previously disconnected connectors.
REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).
Did the SRS prove out successfully?
Yes | Repair is complete. RETURN the vehicle to the customer. |
|---|---|
No | REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing). |
Component Test(s)
Blower Motor Cooling Performance
NOTE: This test is intended to check the cooling mode performance of an operational climate controlled seat backrest or cushion blower motor and verify it is cooling inlet air at the blower motor (ambient cabin air) between 6-8° C (10-14° F).
NOTE: Make sure the vehicle is out of direct sunlight and is in an area with a stable air temperature when testing the climate controlled seat system.
NOTE: For correct temperature measurements, the seat being tested should be occupied.
1. Using a diagnostic scan tool, monitor the following SCME Parameter Identifications (PIDs): Seat cushion thermal electric device temperature (CSHTEMP) Seat back thermal electric device temperature (BKTMP) Passenger Cushion Thermal Electric Device (TED) Temperature (PCSHTMP) Passenger Back (TED) Temperature (PBKTMP) Driver State Seat Mode (DCCSMOD) Passenger State Seat Mode (PCCSMOD)
2. Any initial PID value of greater than 205° C (401° F) or less than 2° C (36° F) indicates a system hardware failure. Do not proceed with this test. GO to Symptom Chart or SCME DTC Chart for diagnostic direction.
3. Gain access to the seat cushion and backrest blower motors and use a suitable thermocouple temperature measuring device to monitor the air inlet temperature. Place the temperature probe near each blower motor air filter.
4. NOTE: The engine must be running to operate the climate controlled seat system and carry out this test.
Operate system in high cool mode and measure the temperature at the cushion blower motor filter using the thermocouple device.
Secure the temperature probe at the cushion blower motor and record the air inlet temperature.
5. Use a diagnostic scan tool to measure the cushion blower motor PID temperature and record the value. Monitor the MODE PID and verify the system is operating. If during testing, the PID value changes to Blower Only state, the system has entered into recovery mode and voltage to the blower motors are disabled. If this occurs, the seat has failed the test. Do not continue. Return to the diagnostic routine.
6. Subtract the cushion blower motor PID temperature from the cushion air inlet temperature and record the temperature difference value.
7. Continue to operate the system in high cool mode and use the thermocouple device to measure the temperature at the backrest blower motor filter. Secure the temperature probe at the backrest blower motor and close the backrest trim cover before measuring and recording the air inlet temperature.
8. Use a diagnostic scan tool to measure the backrest blower motor PID temperature and record the value. Monitor the MODE PID and verify the system is operating. If during testing, the PID value changes to Blower Only state, the system has entered into recovery mode and voltage to the blower motors is disabled. If this occurs, the seat has failed the test. Do not continue. Return to the diagnostic routine.
9. Subtract the backrest blower motor PID temperature from the backrest air inlet temperature and record the value.
10. Compare the cushion and backrest calculated temperature values. The temperature difference should be between 6-8° C (10-14° F).
11. If the calculated temperature values are not within these specifications, check the climate controlled seat components for air duct or filter restrictions, blockages, duct or electrical disconnections and for incorrect assembly. Repair as needed. If OK, carry out the SCME self-test and if any Diagnostic Trouble Codes (DTCs) are retrieved, go to SCME DTC Chart for diagnostic direction. Return to the diagnostic routine.
Copyright © 2016 Ford Motor Company
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