Could have connection issues at the BCM - body control module , lose ground . The BCM controls all the thing's your have problems with .
Turn Signal Lamps
When the turn signal switch is place in either the right or left turn position, the turn/hazard request circuit is pulled low, through a resistor. The body control module (BCM) uses the resistors to determine if the left or right turn signals have been requested. The BCM then supplies an ON-OFF voltage to the turn signal lamps and turn signal indicator on the selected side of the vehicle. The turn signals receive a ground at G101, G401, or G403.
When the ignition switch is turned to the ON position, the vacuum fluorescent (VF) display (radio) turns on at maximum brightness. When the park lamps are ON all incandescent back lighting turn ON at the dimming level indicated by the IP dimmer switch. At the same time all vacuum fluorescent (VF) displays dim to match the indicated dimming level. When the headlamp switch is placed in the PARK position, the park lamp supply voltage circuit provides an input to the body control module (BCM). The BCM then supplies voltage to the instrument panel dimmer switch through the instrument panel dimming lamps control circuit. The setting of the instrument panel dimmer switch determines the amount of voltage that the instrument panel dimmer switch supplies to the BCM through the instrument panel dimming lamps low reference circuit. The BCM then sends a pulse width modulated (PWM) voltage to all the interior lamps. All the vacuum florescent (VF) and incandescent back lighting lamps are provided a specific voltage and are then grounded. When the headlight switch is turned to the PARK or HEADLAMP position, all incandescent back lighting turn on at the dimming level indicated by the IP dimmer switch. When the IP dimmer switch is moved from MIN to MAX, all vacuum fluorescent (VF) displays, as well as all incandescent back lighting respond from Minimum intensity to maximum brightness in response to the IP dimmer switch.
Engine Coolant Indicator(s)
LOW COOLANT LEVEL
The IPC illuminates the low coolant warning indicator when any of the following occur:
• The BCM detects a low coolant level condition for at least 30 seconds. The IPC receives a class 2 message from the BCM requesting illumination.
• The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds .
The thing to do first would be to hook up a factory or professional type scan tool an check for Instrument cluster or BCM DTC'S - diagnostic trouble codes . Then checking connection 's at the BCM , testing power an grounds .
ECM Inputs and Outputs Diagnosis
Open Circuit Detection Wiring Diagram 1
SOURCE: 2005 saturn ion electrical problem
Probably something shorting out. This is something that probably isn't going to be easy to figure out. You need someone that can diagnose it in person
SOURCE: random multiple misfirings
Here is a list of possible causes. You should not drive the vehicle if the check engine light is flashing all the time, you can cause even more damage. It could pay to have a professional find the real cause.
Spark plugs that are incorrect for the application, cracked, improperly gaped or worn can cause the engine to misfire or run rough at all times.
An IC module that failed to correctly control the ignition coil(s) will cause the engine to misfire or run rough at all times.
Poor connections, broken wiring or wiring that has shorts to ground can cause the engine to misfire or run rough at all times. NOTE: Check connectors that might be pulled apart as the engine flexes or wires that short to ground as they pass near brackets or shorts to ground on the exhaust manifold.
Fuel injector(s) that are shorted, plugged or partially restricted can cause the engine to misfire or run rough at all times.
An ignition coil(s) that has low output, corrosion on the coil tower(s), is carbon tracked or arcs to ground will cause the engine to misfire or run rough at all times.
A PCM that failed to properly control the injector or ignition timing will cause the engine to misfire or run rough at all times.
SOURCE: Saturn has been going through coolant very fast. Leak? radiator?
1. Obviously there is major leak in the cooling system and you will need to rectify this before you cook your engine.
2. The radiator, all coolant hoses and hose connections need to be checked including the heater hoses. If you cannot locate the source of the leak yourself you will need to take it to a mechanic to check. He will pressure test the system.
Hopefully it is just a perished hose that is letting coolant escape and if so this will not be expensive to fix.
If the radiator has a leak, which is common in older vehicles, you will have to invest in a replacement unit.
If all flexible hoses on the cooling system are old you should, in any event, replace all of them as preventative maintenance.
3. The worst problem you could have is a faulty head gasket which is allowing coolant to escape under pressure into the engine cavities including the cylinders. Check your oil on the dip stick and if you can see a whitish substance in the oil you have coolant leakage. This will be expensive to fix as the head on the engine will need to be removed.
4. You should not be driving the car whilst it is losing coolant so quickly as you are risking very expensive engine damage from overheating.
SOURCE: have 2004 saturn ion. coolant light stays on all
LOW LEVEL COOLANT SENSOR BAD OR EITHER WIRE CONNECTOR TO SENSOR IS LOOSE OR HAS A SHORT IN IT.
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