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Re: Reverse Sensor Adjustment
Found it:
Your Cadillac is equipped with a very good on-board diagnostic system capable of reading out the stored trouble codes. Contained here is information and instructions for entering the onboard self-diagnostic mode.
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Go HomeSERVICE ENGINE SOON LIGHTGo Top- The dash mounted "CHECK ENGINE" light (also called "SERVICE ENGINE SOON" (SES) or "MALFUNCTION INDICATOR LAMP" (MIL) on some model years) is used to inform the technician of detected system malfunctions or abnormalities. When the check engine light turns on, it indicates that a malfunction has occurred for which a trouble code has been set. The trouble code can be retreived with either the on-board diagnostic display, or on some model years, through the use of a Tech-2 scan tool. The malfunction may or may not result in abnormal engine operation. The light goes out automatically once the required repairs are made or if the fault clears itself (intermittent). However, the computer stores the trouble code(s) associated with the detected failure until the diagnostic system, is "Cleared" or until 20 (or 50) ignition switch (on-off) cycles have occurred without the fault reappearing.
Proper operation of the light is as follows:- With the engine running the light is normally off.
- A bulb check is preformed when the ignition is in the "On" and "Crank" positions. When the engine starts, the bulb goes out.
- The light comes on and stays on when a constant malfunction is detected.
- If a malfunction is intermittent, the light will go out when the malfunction is not present. The light will come on each time a malfunction is detected (may flicker on/off).
- The light stays on when the system is displaying the diagnostic routine.
The dash mounted digital display panel, either the Electronic Climate Control (ECC) or Driver's Information Center (DIC), can be temporarily directed to display trouble codes stored in the onboard computer.
Go Home1980s DIAGNOSTIC DISPLAYGo Top- HOW TO "ENTER" DIAGNOSTIC MODE
To enter diagnostic mode, proceed as follows:- Turn the ignition "ON". Engine can be either OFF or RUNNING.
- Depress the "OFF" and "WARMER" buttons on the ECC panel simultaneously and hold until "--" appears. "88" will then be displayed which indicated the beginning of the diagnostic readout.
- Trouble codes will be displayed on the digital ECC panel beginning with the lowest numbered code. Note that the MPG panel goes blank when the system is displaying as the diagnostic mode.
HOW TO "CLEAR" TROUBLE CODES
Trouble codes stored in the ECM's memory may be cleared (erased) by entering the diagnostic mode and then depressing the "OFF" and "HI" button simultaneously. Hold until "00" appears. After "00" is displayed the ECM will display "70".
HOW TO "EXIT" DIAGNOSTIC MODE
To get out of the diagnostic mode, depress any of the ECC "function" keys (Auto, Econ, etc. except Rear Defog) or turn ignition switch off for 10 seconds. Trouble codes are not erased when this is done. The temperature setting will reappear in the display panel. Additional information on Trouble Codes and Diagnostic Procedures specific to the Early 1980s Cadillacs.
Go Home1990s DIAGNOSTIC DISPLAY
OBD-1 Equipped VehiclesGo Top- HOW TO "ENTER" DIAGNOSTIC MODE
To enter diagnostic mode, proceed as follows:- Turn ignition "ON." Engine can be either OFF or RUNNING.
- Depress the "OFF" and "WARMER" buttons on the Climate Control Center (CCC) simultaneously and hold until the segment check appears on the Instrument Panel Cluster (IPC).
After entering On-Board Diagnostics, a segment check is automatically performed and then any trouble code stored in computer memory will be displayed. Codes may be stored for the Powertrain Control Module (PCM), Instrument Panel Cluster (IPC), Air Conditioning Programer (ACP), Supplemental Inflatable Restraint (SIR) Traction Control System (TCS) or Road Sensing Suspension (RSS) systems.
Each trouble code consists of the system abbreviation: (P: Powertrain, PCM), (E: Engine, ECM), (I: Instrument Panel Cluster , IPC), (A: Air Conditioning, ACP), (R: Supplemental Inflatable Restraint - Air Bags, SIR), (T: Traction Control - Anit-Lock Brakes, TCS), (S: Road Sensing Suspension, RSS), a three digit code identifier, and the letter C or H. All codes for each system are displayed together, in the order of their three digit number (lowest first). The final digit of the code, a "C" or "H" is used to indicate whether the code is Current or History. A "C" means the fault was still present the last time the diagnostic test was run, while "H" means the failure was not present the last time the code was tested for.
If no codes are present for a system, a "NO X CODE" message (with "X" being the system i.e. E, I, A, R, T or S) will be displayed. If the communication line to a component is not operating, a "NO X DATA" message will be displayed, indicating that the IPC could not communicate with that system.
HOW TO "CLEAR" TROUBLE CODES
Selection of "CLEAR CODES?" test will result in the message "CODES CLEARED" being displayed along with the selected systems name. This message will appear for 3 seconds and then return to the next available test type.
HOW TO "EXIT" DIAGNOSTIC MODE
To get out of the diagnostic mode anytime during the test, depress the "AUTO" or "DEFOG" button, or turn the ignition switch "OFF." Trouble codes are not erased if this is done prior to selecting "CODES CLEARED." Additional information on Trouble Codes and Diagnostic Procedures specific to the Early-1990s OBD-I Cadillacs.
Go HomeMid-1990s Cadillac Fleetwood
Using the On-Board DiagnosticsGo Top- HOW TO "ENTER" DIAGNOSTIC MODE
To enter diagnostic mode, proceed as follows:- With the ignition in the "RUN" position (engine does not necessarily need to be running, but it will work either way).
- Push (and hold) "OFF" and "WARMER" simultaneously on the Electronic Climate Control (ECC) until all telltales lights illuminate (segment check).
- Release the "OFF" and "WARMER" buttons.
- System is now in diagnostic mode. "00" (zero-zero) should now be displayed. This is the pointer.
- Pressing "OUTSIDE TEMP" will allow you to display the corresponding code for the pointer.
- Use the "FAN SPEED" override switch (UP/DOWN) to increment or decrement the pointer number.
- Pressing "AUTO" or turning the ignition switch "OFF" exits diagnotic mode.
Pointers 00-04 contain the stored trouble codes. - "00" = Powertrain Control Module (PCM) codes
- "01" =
- "02" = Heating, Ventilation and Air-Conditioning (HVAC) codes
- "03" =
- "04" = Anti-lock Brake/Traction Control System (ABS/TC) Codes
HOW TO "CLEAR" TROUBLE CODES
A code can be cleared by press the "OFF" button while that particular code is displayed.
To get out of the diagnostic mode, depress any of the "ECON" or "DEFOG" buttons, or turn ignition switch off for 10 seconds. Trouble codes are not erased when this is done. The temperature setting will reappear in the display panel. Additional information on Trouble Codes and Diagnostic Procedures specific to the Mid-1990s LT1 equipped Cadillac Fleetwoods.
Go Home1990s DIAGNOSTIC DISPLAY
OBD-2 Equipped VehiclesGo Top- HOW TO "ENTER" DIAGNOSTIC MODE
To enter diagnostic mode, proceed as follows:- Turn ignition "ON." Engine can be either OFF or RUNNING. For cars equipped with the Digital Instrument Panel Display (Digital IPC):
- Simultaneously press the "OFF and "WARMER" (red) buttons on climate control center (CCC) until all display segments (IPC and CCP) are illuminated For cars equipped with the Analog Instrument Panel Display (Analog IPC):
- Simultaneously press on the Climate Control Panel (CCP) the "OFF" and "PASS WARMER" (up arrow) buttons.
After the segment display test, the driver message center displays all set DTC, current and history, in the following order:- <LI type=A>PCM DTC <LI type=A>IPC DTC <LI type=A>ACM DTC <LI type=A>SDM DTC <LI type=A>TCS DTC <LI type=A>PZM DTC <LI type=A>IRC DTC <LI type=A>RFA DTC <LI type=A>CCP DTC <LI type=A>MSM DTC <LI type=A>MMM DTC
- PHN DTC The RSS, CCP, MSM, MMM and PHN DTC appear only on vehicles equipped with these options. Press the FAN DOWN button in order to bypass the DTC display.
On the OBD II cars, the prefixes you'll see are: "IP" for the IPC instrument panel; "AC" for air conditioning module; "TC" for traction control; "RS" for the road suspension system; "SD" for the air bags; "PZ" for the body control module; "CC" for the cell phone; "RF" for the integrated radio system.
HOW TO "EXIT" DIAGNOSTIC MODE
To exit the diagnostic mode anytime during the test, depress the "ECON" or "DEFOG" button, or turn the ignition switch "OFF." Additional information on Trouble Codes and Diagnostic Procedures specific to the 1990 OBD-II Cadillacs.
Go Home2000s DIAGNOSTIC DISPLAYGo Top- HOW TO "ENTER" DIAGNOSTIC MODE
To enter diagnostic mode, proceed as follows:- Turn ignition "ON." Engine can be either OFF or RUNNING.
- Depress the "ON/OFF" button and the "UP ARROW" end of the info button on the driver information center simultaneously for a few seconds.
All the dashboard lights will illuminate, including the segments of the DIC display. You are then presented with text.
You can cycle through different questions using the UP and DOWN arrows on the info button.
HOW TO "EXIT" DIAGNOSTIC MODE
To exit the diagnostic mode anytime during the test turn the ignition switch "OFF." Additional information on Trouble Codes and Diagnostic Procedures specific to the 2000 OBD-II Cadillacs.
Go HomeULTRASONIC REAR PARKING ASSIST
DIAGNOSTIC DISPLAYGo Top
Using the 3 indicators on the rear parking assist display the system is capable of displaying diagnostic trouble codes. After the bulb check has been completed, the red outside indicator flashes to indicate a malfunction with the system. The module disables operation of the Ultrasonic Read Parking Assist (URPA) system under this condition. - HOW TO "ENTER" DIAGNOSTIC MODE
To enter diagnostic mode, proceed as follows:- Short the rear parking assist diagnostic connector to ground while the vehicle is in PARK.
- Turn the ignition ON.
- Place foot on the brake.
- Shift the vehicle into REVERSE within 5 seconds. If the vehicle is not shifted into reverse within 5 seconds after turning the ignition ON, the diagnostic mode will still be initiated. However, a reverse input wiring fault will be registered as shown in the Diagnostic Indicator table below.
When the diagnostic mode is first entered, the rear parking assist display displays the amber outside indicator and the red outside indicator. Then the indicators on the rear parking assist display will display one or more of the sequences in the table below to indicate where the fault exists within the rear parking assist system.
Diagnostic Indicators State/Fault Location Amber Outside Amber Middle Red OutsideStart of Diagnostics ON OFF ONRR Corner Object Sensor and Wiring ON OFF OFFRR Middle Object Sensor and Wiring ON ON OFFLR Middle Object Sensor and Wiring OFF ON ONLR Corner Object Sensor and Wiring OFF OFF ONChime Warning Wiring OFF ON OFFReverse Input Wiring OFF FLASHES OFFSensor Supply Voltage Circuit and FLASHES FLASHES FLASHESSensor Low Reference Circuit
HOW TO "CLEAR" TROUBLE CODES
The rear parking assist diagnostic sequences may be cleared in one of the following ways:- Drive the vehicle forward at least 24 km/h (15 mph). Stop the vehicle. Turn the ignition OFF.
- Turn the ignition ON. Place foot on the brake. Shift the vehicle into REVERSE within five seconds. Turn the ignition OFF.
The sequences will not clear if the rear parking assist diagnostic connector is grounded.
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11-19-2009, 03:24 PM
