Very strange. You need a professional with a high level scan tool that can collect freeze frame data, to find out what is going on when this happens. It sounds a bit like it is going into Limp Mode, but it shouldn't shut off.
If you have power in the car (lights and dash are working), then the anti-theft system has probably been activated - this can happen if the key has not been programmed properly or is not correct for this car, and you will have to get a dealer to reset it. If you have no power, check the battery and all fuses.
Pin #16 ( in the connector where you hook up your code reader) battery voltage from fuse DIM / ALDL fuse DIM/ALDL Fuse
10 A
Dash Integration Module (DIM) and Data Link Connector (DLC)
location - under hood fuse box .
pins 4 & 5 are ground connections . What other thing's are you trying too hook up ? Does the vehicle start an run ?
I have the same car. Check your battery state if charge. 2nd Re lock the car with the fob . Let the car sit for 10 minutes and re open with the fob and start the car. Either a battery problem or the anti theft was set. Please let me know what happened.
-I believe the switch is bad. The line to the pump might stuck at the wipe position. So every time it on. It turn both
devices on.
Check it out.
Good luck
Mai
There is a rubber bushing that sits inside the shift linkage that wears out over time. It will not damage the trans if you drive it that way. It is just a little noisy and sounds bad when moving the shift lever.
You need to take it to the dealer. One of the system computers is failing. I do not know that model but it could be either the body computer or dash computer. Good Luck.
water is getting into the harness connections for the ECM
use water displacer ( wd-40 or the like ) after a wash or find where the water is affecting and use a spray wax to cover all of the electrical connections
2006 Cadillac Deville Car Radio Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger Wire: Pink
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue
DTC P2097 Post Catalyst Fuel Trim System High Limit Bank 1
Circuit Description
The wide band heated oxygen sensor (HO2S) measures the amount of oxygen in the exhaust system and provides more information than the switching style HO2S. The wide band sensor consists of an oxygen sensing cell, an oxygen pumping cell, and a heater. The exhaust gas sample passes through a diffusion gap between the sensing cell and the pumping cell. The engine control module (ECM) supplies a voltage to the HO2S and uses this voltage as a reference to the amount of oxygen in the exhaust system. An electronic circuit within the ECM controls the pump current through the oxygen pumping cell in order to maintain a constant voltage in the oxygen sensing cell. The ECM monitors the voltage variation in the sensing cell and attempts to keep the voltage constant by increasing or decreasing the amount of current flow, or oxygen ion flow, to the pumping cell. By measuring the amount of current required to maintain the voltage in the sensing cell, the ECM can determine the concentration of oxygen in the exhaust. The HO2S voltage is displayed as a lambda value. A lambda value of 1 is equal to a stoichiometric air fuel ratio of 14.7:1. Under normal operating conditions, the lambda value will remain around 1. When the fuel system is lean, the oxygen level will be high and the lambda signal will be high or more than 1. When the fuel system is rich, the oxygen level will be low, and the lambda signal will be low or less than 1. The ECM uses this information to maintain the correct air/fuel ratio.
Fuel trim biasing is used by the ECM to keep the post catalyst HO2S voltage within a range of 580-665 mV as possible. This allows optimal catalyst efficiency under light load conditions, such as at idle or a steady cruise. The ECM constantly monitors how lean or rich the fuel trim bias is commanded. If the ECM detects that the fuel trim bias is commanded rich for more than a calibrated amount, DTC P2097 or P2099 sets.
Air Fuel Wideband vs Oxygen Sensors O2 sensors The Demise of Shadetree...
