1991 saab 900 convertible diagnostic test plug
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Filed Under (Saab) by admin on 26-05-2010
DESCRIPTION & OPERATION Convertible top utilizes 6 motors to raise and lower convertible top. Operation of electric motors is controlled by an electromechanical drive system called Top Slack Actuation System (TSAS). TOP SLACK ACTUATION SYSTEM (TSAS) In addition to 6 motors, TSAS system consists of control module, 3 potentiometers, and 7 microswitches. System operates by means of electric motors which are activated by control module, causing top to be raised or lowered. Control module also uses potentiometers to ensure that all movements take place in correct order. When top movement comes to an end, microswitches confirm that top is latched at front and rear, and tonneau cover is latched to the body. If a fault occurs, top movement will be interrupted and a signal will be sent to Saab Information Display (SID), which will sound a buzzer and display an error message.
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Filed Under (GM) by admin on 04-06-2010
Models: 2008-2009 Chevrolet Colorado, TrailBlazer 2008-2009 GMC Canyon, Envoy 2008-2009 HUMMER H3, H3T 2008-2009 Saab 9-7X All Equipped With Engine RPOs LLR, LLV, LL8 Please Refer to GMVIS Condition Some customers may comment that the malfunction indicator lamp (MIL) is illuminated. Some customers may also comment that the engine runs rough. The technician may find DTCs P0300, P0301, P0302, P0303, P0304, P0305, or P0306 set as current or in history, depending on which engine the vehicle is equipped with. Upon further examination, the technician may observe evidence of water intrusion into the spark plug recess area. Cause This condition may be caused by an engine being exposed to a large quantity of water, which may result in some of the water seeping down past the vented threads of an ignition coil bolt, then flowing through the vent opening that is located in the bottom of the related ignition coil bolt hole, and collecting in the spark plug recess area. Correction Important: DO NOT reprogram or replace the engine control module (ECM) for this condition. If evidence of water intrusion in the spark plug recess area/s is not observed, then refer to the appropriate DTC procedures in SI.
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Filed Under (Ford) by admin on 28-03-2011
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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Filed Under (Saab) by admin on 07-06-2010
COMPONENT ID 2 Generator, far down on the right-hand side of the engine. 10 Lights switch, on dashboard between the steering wheel and driver’s door. 16 Instrument lighting rheostat, in switch assembly between the steering wheel and driver’s door. 22A Main fuse board on short side of dashboard by the driver’s door. 27 Direction indicator lamps, LH, in front and rear light clusters. 28 Direction indicator lamps, RH, in front and rear light clusters. 42 Brake fluid warning switch in the brake fluid reservoir. 43 Handbrake switch under the centre console adjacent to the handbrake. 44 Oil pressure sensor 4-cyl: below intake manifold V6: on engine oil pump body. 45 Coolant temperature sensor on the left-hand side of the engine. 46 Fuel level sensor in the fuel tank. 54 Door switch at bottom of door opening. 161 Rear fog light switch in switch assembly between steering wheel and driver’s door. 216 ACC control module in centre of dashboard. 228B Filament monitor, headlamps, on main relay board in the engine bay.
Filed Under (Ford) by admin on 11-11-2010
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.
Related entry: no dtcs are presently stored in the tools memory