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Generator digital control unit is showing" ECM RED LIGHT" and" NOT READY TO START" this is after changing the harness. What could be the problem ?

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Hi. I have 2006 VW Jetta 2.0 TDI .I don't know why my car injectors socet hasn't got power electric? I changed Crankshaft sensor I changed camshaft sensor I changed injectors wiring harness.


Those sensors wouldn't affect power to the injectors.

You need a voltmeter, it's an electrical problem, so you need a digital volt/ohm meter (DVOM), or also called a multi-meter, and digital because many car circuits that are computer related operate at very low voltages or power demands, from milliamps to thousands of volts, like the ignition delivers to the spark plugs. So you buy a cheap multi-meter, then you also need a wiring diagram for your car to see how the fuel injector circuit works. but start there where you plugged in the new injector harness.

You are looking for power to the injectors, with key on. The injector harness has 8 wires; each injector has a power wire and a ground wire, so 4 of the wires in the harness should have power. At least on most American cars, the injector works by having the ecm control the ground for the injector . The power is constant. It is only when the ecm momentarily internally grounds the injector circuit that the injector fires. On your VW, the injector power wires and ground wires both go to the ecm.

Nov 25, 2016 | Volkswagen Jetta Cars & Trucks

Tip

ALARM, CRUISE CONTROL, and STEREO Wiring Color Codes for 1996 Honda Civic This...


ALARM, CRUISE CONTROL, and STEREO Wiring Color Codes for 1996 Honda Civic

This FixYa Tip is for the purpose of installing an Alarm, Remote Starter, Cruise Control, and / or Car Stereo into the vehicle listed in the subject line.

The wires listed are the ones you will need to successfully complete the task.

Some vehicles require additional relays and / or modules to bypass factory security. If they are required - it will be in the NOTES section below the wiring colors.

The following FixYa TIP is good for all Honda Civics for the following production years:

1996


STEREO WIRING COLOR CHART:
Constant 12V+: Blue/White
Switched 12V+: Yellow/Red
Ground: Black
Illumination: Red/Black
Dimmer: n/a
Antenna: Driver's Pillar

Front Speakers:
Left Front (+) Blue
Left Front (-) Gray/Black
Right Front (+) Red/Green
Right Front (-) Brown/Black

Rear Speakers:
Left Rear (+) Blue/Yellow
Left Rear (-) Gray/White
Right Rear (+) Red/Yellow
Right Rear (-) Brown/White

NOTES: Retain Keyless entry with secondary Harness Listed Below
Additional Accessories:
Metra Brand Dash Kit: 89-30-7891 - 99-7891 - 99-7898
Metra Brand Wiring Harness: 70-1720 W/Keyless Entry # 70-1720T
Metra Brand Antenna Adapter: n/a




ALARM / REMOTE START WIRING CHART:
Constant 12V+: White - Ignition Switch Harness
Starter: Black/White - Ignition Switch Harness
Ignition: Black/Yellow - Ignition Switch Harness
Ignition 2: Yellow - Ignition Switch Harness
Accessory: White/Black - Ignition Switch Harness
Tach: Blue - Coil
Brake Switch: Green/White - Brake Switch
Trunk Pin: Blue/Black - (-) Driver's Kick Panel
Parking Lights: Red/Black - (+) Driver's Kick Panel
Head Lamp: Red/White (L) Red/Blue (R) - Steering Column
Hood Pin: n/a
Door Trigger: Light Green/Red - (-) Above Fuse Panel
Door Lock: Green/White - (-) 2 pin connector taped to blue connector behind fuse box
Door Unlock: Green/Orange - (-) Module Behind Radio
Horn: Grey - Steering Column or GREEN connector behind radio

NOTES: - none -



CRUISE CONTROL:
Constant 12V+: White - Ignition Switch Harness or Use Hot Side of Brake
Switched 12V+: Black/Yellow - Ignition Switch Harness
Ground: Use Chassis Near Cruise Control Module
Hot Side of Brake: n/a - Brake Switch
Cold Side of Brake: Green/White - Brake Switch
Tach: Blue - Coil
VSS Wire : Blue/White - Driver's Side Dash Footwell, Grey connector.


NOTES: PPM - 4000PPM
ROSTRA Control Arm # 250-3421/250-1483
ROSTRA Throttle Adapter #250-4249

Vehicles with Manual Transmission require Clutch Switch.
Some vehicles may require a speed signal generator and/or other parts/adapters not listed above.
Rostra® Cruise Control module switch settings may differ if you use a speed signal generator or magnets and a pick up coil.

Thanks for using FixYa!! Please see my other tips on GPS, Car Audio, Large Appliances, and more.

on Apr 03, 2010 | Honda Civic Cars & Trucks

Tip

ALARM, CRUISE CONTROL, and STEREO Wiring Color Codes for 1995 Honda Civic This...


ALARM, CRUISE CONTROL, and STEREO Wiring Color Codes for 1995 Honda Civic



This FixYa Tip is for the purpose of installing an Alarm, Remote Starter, Cruise Control, and / or Car Stereo into the vehicle listed in the subject line.


The wires listed are the ones you will need to successfully complete the task.


Some vehicles require additional relays and / or modules to bypass factory security. If they are required - it will be in the NOTES section below the wiring colors.


The following FixYa TIP is good for all Honda Civics for the following production years:


1995





STEREO WIRING COLOR CHART:

Constant 12V+: Blue/White
Switched 12V+: Yellow/Red
Ground: Black
Illumination: Red/Black
Dimmer: n/a
Antenna: Driver's Pillar

Front Speakers:
Left Front (+) Blue/Green
Left Front (-) Gray/Black
Right Front (+) Red/Green
Right Front (-) Brown/Black

Rear Speakers:
Left Rear (+) Blue/Yellow
Left Rear (-) Gray/White
Right Rear (+) Red/Yellow
Right Rear (-) Brown/White



NOTES: - none -

Additional Accessories:

Metra Brand Dash Kit: n/a
Metra Brand Wiring Harness: 70-1720
Metra Brand Antenna Adapter: n/a








ALARM / REMOTE START WIRING CHART:

Constant 12V+: White - Ignition Switch Harness
Starter: Black/White - Ignition Switch Harness
Ignition: Black/Yellow - Ignition Switch Harness
Accessory: Yellow - Ignition Switch Harness
Tach: Blue - Distributor
Brake Switch: Green/White - Brake Switch
Trunk Pin: Green/Black - (-) Above Fuse Panel (Blue Connector)
Parking Lights: Red/Black - (+) Above Fuse Panel
Head Lamp: Red/White - Steering Column
Hood Pin: n/a
Door Trigger: Light Green/Red - (-) Driver's Running board
Door Lock: Green/White - (-) 2 pin connector taped to blue connector behind fuse box
Door Unlock: Green/Red - (-) Driver's Door at Door Lock Module
Horn: Blue - Steering Column (Relay Required)
Windows UP: LF=Red/Blue RF=Blue/Yellow
Windows DOWM: LF=Red/Yellow RF=Blue/Green


NOTES: - none -






CRUISE CONTROL:

Constant 12V+: White - Ignition Switch Harness or Use Hot Side of Brake
Switched 12V+: Black/Yellow - Ignition Switch Harness
Ground: Use Chassis Near Cruise Control Module
Hot Side of Brake: n/a - Brake Switch
Cold Side of Brake: Green/White - Brake Switch
Tach: Blue - Distributor
VSS Wire : Yellow/Blue - Driver's Side Dash Footwell, Grey connector.




NOTES: 4000PPM

Vehicles with Manual Transmission require Clutch Switch.
Some vehicles may require a speed signal generator and/or other parts/adapters not listed above.
Rostra® Cruise Control module switch settings may differ if you use a speed signal generator or magnets and a pick up coil.


Thanks for using FixYa!! Please see my other tips on GPS, Car Audio, Large Appliances, and more.

on Apr 03, 2010 | Honda Civic Cars & Trucks

2 Answers

Wont start2004 dodge grand caravan sxt code p0685 show on dash


P0685 DODGE - Auto Shutdown Relay Control Circuit Failure
Possible causes - Faulty Engine Control Module (ECM) power relay
- ECM power relay harness is open or shorted
- ECM power relay circuit poor electrical connection
- Faulty (ECM
Possible symptoms:
Engine Light ON (or Service Engine Soon Warning Light) P0685 Dodge Description: Short or open in Auto Shutdown (ASD) relay circuit, this relay is under the hood in the relay center.

Oct 14, 2016 | 2004 Dodge Grand Caravan

1 Answer

What to buy for code p0444 for hyundai tiburon gt 2.7


Felix: Code p0444 indicates a LARGE leak, which often indicates a loose gas cap. It could also be the wrong kind of gas cap. Since they are cheap, this is where I would start.
According to http://www.obd-codes.com/p0444 : On vehicles equipped with Evaporative emission control systems also known as EVAP, the engine draws in excessive fuel vapors from the gas tank that would otherwise be vented into the atmosphere.
The fuel vapor is routed through a vacuum line to the engine's intake and the purge valve/solenoid meters the desired amount of fuel vapors, controlled by the vehicles powertrain control module (PCM) or engine control module (ECM). The PCM/ECM monitors the voltage to the purge control valve and has detected no voltage change with the purge valve commanded on.
Note: This code is similar to codes P0443 and P0445.
Symptoms Symptoms of a P0444 trouble code may include:
  • Check engine light on (Malfunction indicator lamp illuminated)
  • Slightly diminished fuel economy, this will not affect engine performance
Potential Causes Causes of this DTC may include:
  • Wiring harness loose or disconnected
  • Engine wiring harness open circuit
  • Purge control solenoid open circuit
  • PCM/ECM malfunction
Diagnostic Steps for P0444 DTC Engine wiring harness - Check all connectors to ensure they are plugged in properly, look for loose or damaged wires. Typically the purge control valve is energized by the the battery and triggered on and off with a duty cycle through the PCM/ECM. Using the manufacturers wiring diagrams, identify which type of circuit being used and check for battery voltage presence with the key on/engine off at the power side of the control solenoid connector using a digital volt ohm meter (DVOM) set to the volts scale. If no battery voltage is present, trace the wiring back and determine the cause for voltage loss.
Test for continuity of the control side of the wire harness after disconnecting the plug from the control valve solenoid and the PCM wiring harness. Identify the correct wire at the PCM and control valve harness and check for continuity using the ohms scale on the DVOM, if excessive resistance is found, repair the circuit. If there is no continuity on the circuit, check all connections for damaged wiring, loose pins or disconnected harnesses and repair the circuit.
Purge control solenoid - Check for continuity at the purge control solenoid connector pins after removing the harness plug using the DVOM set to the ohms scale. Verify resistance is within manufacturers specifications. If no continuity is present, suspect the solenoid is internally open and replace the part with a known good unit.
PCM/ECM malfunction - Since the EVAP is only turned on during certain driving conditions, it will be necessary to monitor the EVAP control operation using an advanced scan tool capable and performing a road test under the driving conditions required to activate the EVAP system. Some advanced scan tools have an internal test to activate the EVAP system manually. Verify the PCM/ECM is commanding the EVAP system on. If the system is functioning correctly, it will be necessary to back probe the PCM/ECM wiring harness connector using a graphing multimeter or oscilloscope with a duty cycle feature with the positive lead on the purge control valve pin and the negative lead connected to a known good ground. The duty cycle should match what is commanded on by the PCM/ECM during EVAP operation. If there is no duty cycle present, the PCM/ECM may be at fault.This diagnostic trouble code (DTC) is a generic OBD-II powertrain code. It is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may vary depending on the model.a evaporative malfunction . purge valve and gas cap.
If you have to replace the purge valve, here is a picture of its location: tdisline_101.jpg

---------------

If=====

If

May 16, 2015 | Hyundai Tiburon Cars & Trucks

Tip

ALARM, CRUISE CONTROL, and STEREO Wiring Color Codes for 1994 Honda Civic This...


ALARM, CRUISE CONTROL, and STEREO Wiring Color Codes for 1994 Honda Civic



This FixYa Tip is for the purpose of installing an Alarm, Remote Starter, Cruise Control, and / or Car Stereo into the vehicle listed in the subject line.


The wires listed are the ones you will need to successfully complete the task.


Some vehicles require additional relays and / or modules to bypass factory security. If they are required - it will be in the NOTES section below the wiring colors.


The following FixYa TIP is good for all Honda Civics for the following production years:


1994





STEREO WIRING COLOR CHART:

Constant 12V+: Blue/White
Switched 12V+: Yellow/Red
Ground: Black
Illumination: Red/Black
Dimmer: n/a
Antenna: Driver's Pillar

Front Speakers:
Left Front (+) Blue/Green
Left Front (-) Gray/Black
Right Front (+) Red/Green
Right Front (-) Brown/Black

Rear Speakers:
Left Rear (+) Blue/Yellow
Left Rear (-) Gray/White
Right Rear (+) Red/Yellow
Right Rear (-) Brown/White



NOTES: - none -

Additional Accessories:

Metra Brand Dash Kit: n/a
Metra Brand Wiring Harness: 70-1720
Metra Brand Antenna Adapter: n/a








ALARM / REMOTE START WIRING CHART:

Constant 12V+: White - Ignition Switch Harness
Starter: Black/White - Ignition Switch Harness
Ignition: Black/Yellow - Ignition Switch Harness
Accessory: Yellow - Ignition Switch Harness
Tach: Blue - Distributor
Brake Switch: Green/White - Brake Switch
Trunk Pin: Green/Black - (-) Above Fuse Panel (Blue Connector)
Parking Lights: Red/Black - (+) Above Fuse Panel
Head Lamp: Red/White - Steering Column
Hood Pin: n/a
Door Trigger: Light Green/Red - (-) Driver's Running board
Door Lock: Green/White - (-) 2 pin connector taped to blue connector behind fuse box
Door Unlock: Green/Red - (-) Driver's Door at Door Lock Module
Horn: Blue - Steering Column (Relay Required)
Windows UP: LF=Red/Blue RF=Blue/Yellow
Windows DOWM: LF=Red/Yellow RF=Blue/Green


NOTES: - none -






CRUISE CONTROL:

Constant 12V+: White - Ignition Switch Harness or Use Hot Side of Brake
Switched 12V+: Black/Yellow - Ignition Switch Harness
Ground: Use Chassis Near Cruise Control Module
Hot Side of Brake: n/a - Brake Switch
Cold Side of Brake: Green/White - Brake Switch
Tach: Blue - Distributor
VSS Wire : Yellow/Blue - Driver's Side Dash Footwell, Grey connector.




NOTES: 4000PPM

Vehicles with Manual Transmission require Clutch Switch.
Some vehicles may require a speed signal generator and/or other parts/adapters not listed above.
Rostra® Cruise Control module switch settings may differ if you use a speed signal generator or magnets and a pick up coil.


Thanks for using FixYa!! Please see my other tips on GPS, Car Audio, Large Appliances, and more.

on Apr 01, 2010 | Honda Civic Cars & Trucks

1 Answer

My 2006 Chev Impala 3.5l v-6 just showed trouble code P0690. I cleared the code by disconnecting the neg battery lead. It was ok for first start but showed again on the second start. What is it?


POSSIBLE CAUSES FOR THAT CODE OF A CHEVY ARE:
WEAK BATTERY
FAULTY COMPUTER OR ECM (Engine Control Module)
BLOWN ECM FUSE
ECM WIRE HARNESS IS OPEN OR SHORTED
ECM CIRCUIT HAS POOR ELECTRICAL CONNECTION.

Oct 28, 2014 | Cars & Trucks

1 Answer

What is code B2799


This Diagnostic Trouble Code (DTC) is output when the Engine Control Module (ECM) detects errors in communication between the Transponder Key Electronic Control Unit (ECU) assembly and the ECM, or in the communication lines. This DTC is also output when an engine start is attempted while the ECU communication ID between the transponder key ECU assembly and the ECM is different.
Possible causes Faulty Key Faulty transponder key amplifier Faulty Transponder Key Electronic Control Unit (ECU) Transponder key amplifier wire harness Faulty Engine Control Module (ECM)

Mar 02, 2013 | 2007 Lexus ES 350

1 Answer

Code P0621


P0621 Generator Lamp/L Terminal Circuit Malfunction,,The Engine Control Module (ECM) or Powertrain Control Module (PCM) uses the generator turn on signal circuit to control the load of the generator on the engine. A high side driver in the ECM/PCM applies a voltage to the voltage regulator. This signals the voltage regulator to turn the field circuit ON and OFF. The ECM/PCM monitors the state of the generator turn on signal circuit. The ECM/PCM should detect low voltage on generator turn on signal circuit when the ignition is ON and the engine is OFF, or when the charging system malfunctions. With the engine running, the ECM/PCM should detect high voltage on the generator turn on signal circuit. The ECM/PCM performs Ignition ON and RUN tests to determine the status of the generator turn on signal circuit.

Aug 27, 2011 | Pontiac Grand Am Cars & Trucks

3 Answers

1996 Isuzu Rodeo Voltage drops when vehicle accelerates. Have replaced the alternator w/o resolving the problem.


The usual cause for this to happen is either a loose or worn belt; or that the battery cables are dirty and need cleaned. To clean properly take the cables off and clean the ends and post with a wire brush or sand paper; then reattach and tighten.

Sep 11, 2010 | 1991 Isuzu Rodeo

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