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Over voltage stop safely - 2002 Volvo C70

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My brake lights are staying on even when I unplug the brake light switch


The brake light switch is an input to the BCM - body control module , do you know about BCM'S - electronic module ?
Stop Lamps
When the driver presses the brake pedal, the switch contacts open and battery positive voltage is interrupted to the BCM. The BCM then supplies voltage to both the turn/stop lamp supply voltage circuit and trailer rear turn/stop lamp supply voltage circuits. The BCM also supplies voltage to the CHMSL though a dedicated circuit.

could have DTC'S stored in the BCM
DTC B3445 00: Stop Lamp Circuit
Circuit/System Description
The stop lamp switch is used to sense the action of the driver application of the brake pedal. The body control module (BCM) provides a low reference signal and a B+ reference voltage to the stop lamp switch. When the stop lamp switch contacts close indicating the brakes have been applied, the BCM will apply battery voltage to stop lamp relay control circuit and the center high mounted stop lamp (CHMSL). When the stop lamp relay receives battery voltage from the BCM, the relay coil is energized and the stop lamp relay switch contacts close applying battery voltage to the STOP LAMPS fuse to illuminate the left and right stop lamps.

DTC C0277 00: Brake Pedal Position Sensor Calibration Not Learned
DTC C0297 00: Brake Applied Output Circuit
DTC C0890 00: Device Voltage Reference Output 3 Circuit Voltage Out of Range

In the event that DTC C0277, C0297, or C0890 sets as current in the body control module (BCM) is an indication of a possible internal BCM malfunction or programming error. There are no external circuits available to diagnose on this vehicle with respect to these DTCs.
Your best bet would be to take your vehicle to a qualified repair shop or the Cadillac dealer.

Jul 17, 2016 | 2008 Cadillac Escalade

1 Answer

Ford focus drivers window stopped working I can't hear the motor going but passenger one is fine


First, use electric-safe penetrating lubricant to lubricate the window switch to see if corrosion has caused the switch to stop making contact.
If that doesn't work, remove the door panel and see if the window motor is getting voltage when the switch is activated. If the window motor is getting voltage when the switch is activated, check to see if the window regulator mechanism has jammed or seized. If the regulator mechanism appears ok, replace the motor.
If the window motor is not getting voltage when the switch is actuated, replace the switch.

Jul 25, 2014 | Cars & Trucks

1 Answer

No spark on 03 dodge neon


There is voltage on all three wires because there is no ground, check with engine cranking. The two wires that go to computer are grounds for coils. You could probably use a noid lite to check for pulse, engine cranking. That should be safe, between primary voltage and one of the grounds. There several ways to visually check for a pulse. If your digital multimeter has a min/max setting, that should work. You could use an l.e.d. but you would have to use resistor.
You changed computer, was it new?

ignition coil-5iatbqqw4bcw3fkj1yoi3lr2-1-0.jpg

May 15, 2017 | 2003 Dodge Neon

1 Answer

Overvoltage message ford MONDEO


Over voltage would likely be related to the alternator voltage regulator. Electrics can cause intermittent problems - You can easily measure the voltage with a multimeter 13.5 - 14.5 volts would be pretty typical if the voltage is much higher than this then the regulator needs attention.

Jan 16, 2013 | 2008 Ford Mondeo 1.8

1 Answer

I have an Atwood Hot Water Heater, Model GE 16 EXT, 10 gallon tank. It won't stop heating, gas or electric. Replaced the ECO/T-Stat with a new kit. It still will not stop heating. What else can I try?


Start is usually a momentary circuit. It closes a secondary circuit commonly addressed as the run circuit. Secondary. It sounds like the secondary (run) circuit is stuck closed and the thermostat cannot cancel it out when the temp is reached. The primary circuit is generally low voltage, 15vDC controlled by the t-stat and the secondary high voltage (110v A.C., is engaged on signal from the t-stat. You replaced the stat so that is not an issue. The low voltage controls a rela, Large and small wires are connected to this relay. These relays have or are contacts and they do fail. Either they stick or not work at all. Take caution with this relay because it will also make your hair stand on end if attention isn't given to the 110v side. Food Luck and be safe. -Ned

BY THE WAY, a TOWN CAR WITH AN aTWOOD 10 GALLON WATER HEATER?hMMM.

Jul 06, 2011 | 2004 Lincoln Town Car

1 Answer

Flashing airbag light 4 blinks 6 blinks


This is a code 46 LH Crash Sensor - Not Mounted to Vehicle Properly. Often there is a poor contact on one of the wiring connectors. Some of the problems can happen from a poor connection where everything connects under the drivers side seat.
Here is a list of codes for the airbag light issues.

Air Bag Fault Code Table

AIR BAG DIAGNOSTIC MONITOR FAULT CODE PRIORITY TABLE

Priority Code Component/Fault Description

Highest -- No Air Bag Lamp - Inoperative Lamp Circuit or No Ignition Voltage to Diagnostic Monitor

' -- Continuous Air Bag Lamp - Diagnostic Monitor Disconnected or Inoperative

' 12 Low Battery Voltage

' 13 Air Bag Circuit or Crash Sensor Circuit - Shorted to Ground

' 21 Safing Sensor - Not Mounted on Vehicle Properly

' 22 Safing Sensor Output Circuit - Shorted to Battery Voltage

' 23 Safing Sensor Input Feed/Return Circuit Open

' 24 Open in Circuit 944B or Low Resistance in Crash Sensor(s)

' 32 Driver Side Air Bag/Safing Sensor Circuit - High Resistance or Open

' 33 Pin 7 Not Grounded at Diagnostic Monitor

' 34 Driver Side Air Bag/Safing Sensor Circuit - Low Resistance or Shorted

' 35 Low Resistance Across Pins 8 and 9 at Diagnostic Monitor

' 41 Crash Sensor Circuit - High Resistance or Open

' 44 RH Crash Sensor - Not Mounted to Vehicle Properly

' 45 Center Radiator Crash Sensor - Not Mounted to Vehicle Properly

' 46 LH Crash Sensor - Not Mounted to Vehicle Properly

' 51 Diagnostic Monitor Internal Thermal Fuse - Blown and Short to Ground No Longer Exists

' 52 Backup Power Supply - Voltage Boost Fault

' 53 Internal Diagnostic Monitor Fault

Lowest -- Rapid Continuous Flashing of Air Bag Lamp - All Crash Sensors Disconnected

Hope this helps...

May 05, 2011 | 2003 Ford Escape

2 Answers

Car went into Transmission Faisfafe Prog.


i am aware of a similar problem ------check the output on the alternator -when the output is low the car goes into safe mode

Jun 16, 2009 | 2002 BMW 5 Series

2 Answers

Air bag


 12 Low Battery Voltage 
| 13 Air Bag Circuit or Crash Sensor Circuit - Shorted to Ground 
| 21 Safing Sensor - Not Mounted on Vehicle Properly 
| 22 Safing Sensor Output Circuit - Shorted to Battery Voltage 
| 23 Safing Sensor Input Feed/Return Circuit Open 
| 24 Open in Circuit 944B or Low Resistance in Crash Sensor(s) 
| 32 Driver Side Air Bag/Safing Sensor Circuit - High Resistance or Open 
| 33 Pin 7 Not Grounded at Diagnostic Monitor 
| 34 Driver Side Air Bag/Safing Sensor Circuit - Low Resistance or Shorted 
| 35 Low Resistance Across Pins 8 and 9 at Diagnostic Monitor 
| 41 Crash Sensor Circuit - High Resistance or Open 
| 44 RH Crash Sensor - Not Mounted to Vehicle Properly 
| 45 Center Radiator Crash Sensor - Not Mounted to Vehicle Properly 
| 46 LH Crash Sensor - Not Mounted to Vehicle Properly 
| 51 Diagnostic Monitor Internal Thermal Fuse - Blown and Short to Ground No Longer Exists 
| 52 Backup Power Supply - Voltage Boost Fault 
| 53 Internal Diagnostic Monitor Fault 
Lowest -- Rapid Continuous Flashing of Air Bag Lamp - All Crash Sensors Disconnected 

Dec 11, 2008 | 2002 Ford Ranger Regular Cab

1 Answer

Airbags lite flashs


12 FAULT LOCATION Supply voltage
Check Supply voltage, Fuses, Wiring, Srs control module, Safing sensor

52 FAULT LOCATION Back-up power supply
Check Wiring short circuit, Safing sensor, Srs control module

Jul 13, 2008 | 1994 Mazda MX-5

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