self diagnostic for 1988 cadillac seville


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2007 Honda Ridgeline How to Use the Self-diagnostic Function without the HDS

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Filed Under (Honda) by admin on 29-12-2010

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The climate control unit has a self-diagnostic function. To run the self-diagnostic function, do the following. NOTE: Before troubleshooting the climate control system, refer to B-CAN System Diagnosis Test Mode A Troubleshooting , and the communication circuit self- diagnostic function test. 1. Turn the ignition switch OFF, and then ON (II). 2. Press and hold the OFF button. While holding the OFF button, press the recirculation button five times within 10 seconds . Release the OFF button, then the self-diagnostic begins. Wait for about one minute for the self- diagnostic to complete. NOTE: The blower motor will run various speeds regardless of what the panel is displaying. If there is any problem in the system, the temperature indicator will light up the segment (A through Ohm) corresponding to the error. The temperature indicator will then alternate every second between displaying “88″ (all segments lit) and the error code segment (A through Q). To determine the meaning of the DTC, refer to checking for DTCs.

2007 Honda Ridgeline How to Use the Self-diagnostic Function without the HDS

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Filed Under (Honda) by admin on 30-06-2010

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The climate control unit has a self-diagnostic function. To run the self-diagnostic function, do the following. NOTE: Before troubleshooting the climate control system, refer to B-CAN System Diagnosis Test Mode A Troubleshooting , and the communication circuit self- diagnostic function test. 1. Turn the ignition switch OFF, and then ON (II). 2. Press and hold the OFF button. While holding the OFF button, press the recirculation button five times within 10 seconds . Release the OFF button, then the self-diagnostic begins. Wait for about one minute for the self- diagnostic to complete. NOTE: The blower motor will run various speeds regardless of what the panel is displaying. If there is any problem in the system, the temperature indicator will light up the segment (A through Ohm) corresponding to the error. The temperature indicator will then alternate every second between displaying “88″ (all segments lit) and the error code segment (A through Q). To determine the meaning of the DTC, refer to checking for DTCs.

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1994 Cadillac Seville Steering Column Replacement

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Filed Under (Cadillac) by admin on 28-09-2010

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REMOVAL Wheels must be in a straight forward position and the key must be in the Lock position when removing or installing column to ensure proper alignment of components during installation. 1. Remove inflator module as outlined in Air Bag. Refer to Air Bags and Seat Belts/Air Bags(SRS). 2. Remove knee bolster and steering column reinforcement plate. 3. Disconnect electrical connectors from column. 4. Remove pinch bolt from intermediate shaft, Fig. 13. 5. Remove lower support bracket from vehicle. 6. Remove upper column support from instrument panel, then the column from vehicle. INSTALLATION 1. Install column in vehicle and support at upper bracket with two bolts, Fig. 14, do not tighten at this time. 2. Install column lower support bracket in vehicle, do not tighten at this time. 3. Connect column intermediate shaft to steering rack, install pinch bolt and torque to 35 ft. lbs. 1994 Cadillac Seville SLS V8-4.6L VIN Y 4. 5. 6. 7. Torque upper and lower column support bolts to 20 ft. lbs., then the lower bracket to column screws to 12 ft. lbs. Connect electrical connectors to column. Install knee bolster and column reinforcement plate. Install steering wheel inflator module as outlined in Air Bag. Refer to Air Bags and Seat Belts/Air Bags(SRS).

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2008 Town Car Workshop Manual HVAC Module Self-Test

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Filed Under (Ford) by admin on 11-11-2010

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HVAC Module Self-Test The HVAC module self-test will not detect concerns associated with data link messages like engine coolant temperature or vehicle speed signals. A scan tool must be used to retrieve these concerns. The HVAC module self-test will detect concerns in the system control functions and will display hard DTCs. Hard DTCs identify faults which are present during the self-test. The vehicle interior/ambient temperature should be between 4-32° (40-90°F) when carrying out the self-tes t. If the temperatures are not within the specified ranges, false temperature C sensor DTCs will be displayed. The self-test can be initiated at any time. Normal operation of the system stops when the self-test is activated. To enter the self-test, press the OFF and FLOOR buttons simultaneously and then press the AUTO button within 2 seconds. The display will show the fan speed indicator illuminating from low to high. The test may run as long as 30 seconds. Record all DTCs displayed. If any DTCs appear during the self-test, follow the diagnostics procedure given under ACTION for each DTC given. If a condition exists but no DTCs appear during the self-test, GO to Symptom Chart – Climate Control Systems. To exit the self-test and clear all DTCs, press the front DEFROST button. The HVAC control assembly will then turn OFF (display blank) and all DTCs will be cleared. Always exit the self-test before powering the system down (system turned OFF). If a condition exists, but no on-demand DTCs appear during the self-test, carry out the HVAC Module Retrieve Continuous DTCs self test. HVAC Module — Retrieve Continuous DTCs This function will display continuous (intermittent) codes and hard faults that occur during normal operation. To display continuous codes, press the OFF and FLOOR buttons simultaneously and then release and within 2 seconds press the RECIRC button. To exit the display of continuous codes, press the front DEFROST button. This will exit and clear all DTCs. Press any button except DEFROST to exit without clearing DTCs set before the last ignition cycle. Always exit continuous codes display before powering the system down (system turned off). Continuous DTCs are saved only after an ignition cycle. Continuous DTCs will be deleted after 80 ignition switch ON cycles after the intermittent condition occurs.

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1999 Ford Expedition Climate Control System DIAGNOSIS AND TESTING

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Filed Under (Ford) by admin on 28-03-2011

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Inspection and Verification 1. Verify the customer’s concern by operating the climate control system to duplicate the condition. 2. Inspect to determine if one of the following mechanical or electrical concerns apply: Visual Inspection Chart Loose, missing or damaged A/C compressor drive belt. Loose or disconnected A/C clutch. Loose, misrouted or damaged vacuum lines. Broken or leaking vacuum control motora Discharged A/C system. Broken or leaking refrigerant lines. a a A leak in the vacuum control circuit may occur during acceleration (slow leak), may exist at all times (large leak), and may exist only when specific functions are selected (indicating a leak in that portion of the circuit). The vacuum hoses used in the passenger compartment control circuit are constructed from PVC plastic material. The vacuum hoses used in the engine compartment are constructed of Hytrel®. Because of the materials used, never pinch the vacuum hoses off during diagnosis to locate a leak. A wood golf tee can be used as a plug when it is necessary to plug one end of the vacuum hose for leak test purposes. 3. If the inspection reveals obvious concern(s) that can be readily identified, service as required. 4. If equipped with the electronic automatic temperature control system, go to Step 6. 5. If equipped with a manual A/C system, determine the symptom and go to the Symptom Chart. 6. If the concern remains after the inspection, connect the Rotunda New Generation Star (NGS) Tester to the data link connector (DLC) located beneath the instrument panel to carry out the DATA LINK DIAGNOSTICS test. If the NGS responds with NO RESPONSE/NOT EQUIPPED for the electronic automatic temperature control module, GO to Pinpoint Test A. If the DATA LINK DIAGNOSTICS test is passed for the electronic automatic temperature control module, retrieve the continuous DTCs and execute the Self-Test Diagnostics for the electronic automatic temperature control module to retrieve the current DTCs. Mechanical Electrical Open fuses. Blower motor inoperative. A/C compressor inoperative. Circuitry open/shorted. Disconnected electrical connectors. 7. If the self-test is passed and no DTCs are retrieved, go to the Symptom Chart to continue diagnostics. 8. If DTCs are retrieved, go to the Electronic Automatic Temperature Control (EATC) Module Diagnostic Trouble Code (DTC) Index to continue diagnostics. 9. If the electronic automatic temperature control module cannot be accessed by the NGS, GO to Pinpoint Test A. Electronic Automatic Temperature Control Module Self-Test The EATC module self-test will not detect concerns associated with data link messages like engine coolant temperature or vehicle speed signals. A NGS tester must be used to retrieve these concerns. The EATC module self-test will detect concerns in the system control functions and will display hard diagnostic trouble codes (DTCs) in addition to intermittent diagnostic trouble codes for concerns that occur during system operation. The vehicle interior temperature should be between 4-32° (40-90°F) when performing the self-test. If the temperatures are C not within the specified ranges, false in-car temperature sensor DTCs will be displayed. The self-test can be initiated at any time. Normal operation of the system stops when the self-test is activated. To enter the self-test, press the OFF and FLOOR buttons simultaneously and then press the AUTOMATIC button within two seconds. The display will show a pulse tracer going around the center of the display window. The test may run as long as 30 seconds. Record all DTCs displayed. If any DTCs appear during the self-test, follow the diagnostics procedure given under ACTION for each DTC given. If a condition exists but no DTCs appear during the self-test, refer to the Symptom Chart Condition: The EATC System Is Inoperative, Intermittent or Improper Operation. To exit self-test and retain all intermittent DTCs, push the blue (cooler temperature) button. The control will exit self-test, retain all intermittent DTCs and then turn OFF (display blank). To exit self-test and clear all DTCs, press the DEFROST button. The vacuum fluorescent display window will show 888 and all function symbols for one second. Then, the EATC control assembly will turn OFF (display blank) and all DTCs will be cleared. Always exit the self-test before powering the system down (system turned OFF). Intermittent DTCs will be deleted after 80 ignition switch ON cycles after the intermittent condition occurs.

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