Question about Chevrolet C3500

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My programmer turned red and sent an error code then it turned green, for just a second. then went back red...My truck is now not running good at all.

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What was error code?

Posted on Apr 03, 2011

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I replaced the fuel pump on my 2004 1500 5.7 liter. Started at first but only ran at idle for a few seconds and died. Now i have no fuel pressure at all. Also the wiring connection at top of fuel pump


gotta start with the color code of the wiring. verify that is correct first. you have to have fuel pressure for it to run obviously so make sure you wired it correctly. Here is the color code according to Mitchell OnDemand
black/orange= ground for fuel pump
orange/red=power on for fuel pump(only gets triggered from fuel pump relay)
dark blue/white= signal to pcm for fuel level
dark blue/ dark green= ref voltage

If that is ok then check for relay activation. Fuse 17 is the power source for that relay. If you have a good fuse but no relay activation you could throw a relay at it but if that doesnt do it then its gotta go to a shop. But if you are curious....
Relay code
pin 30= hot at all times
pin 86= relay control trigger from the pcm
pin 85= hot in run or start
pin 87= power source to fuel pump.(i.e. orange/red wire)

the relay will have numbers on it designating the correct pins. Get that right first then move on to the next. I'll be here. Good luck!

Feb 12, 2013 | 2004 Dodge Ram 1500

1 Answer

Nissan pulsar 1987 n13 the ECM light came one and the car cut out and won't start again and I need to know where the ECM is


Hi, the computer is under the passenger's seat. Code extraction procedure is pasted below.


READING CODES Modes will not switch while the engine is running. The ECM automatically switches to MODE I when the ignition is switchedOFF.
1984-90 Vehicles With Dual LED System
The self-diagnostic system has 5 modes. To switch modes, switch the ignition ON and use a screwdriver to turn the mode select switch through the access port on the ECM. The inspection lights will begin to flash. When the desired mode has been entered, turn the screwdriver fully counterclockwise. The red LED and green LED perform different functions in different modes.
Mode I-
This is the normal vehicle operating mode. The green LED will indicate loop status. If the green LED is not blinking when the engine is running, the vehicle is in open loop, or the HO 2 S, O 2 S, or sensor circuit has a malfunction. If the green LED is blinking, the vehicle is in closed loop. If a malfunction takes place, the red LED and the MIL will glow, indicating a malfunction has occurred.
Mode II-
Both the red LED and green LED are used to monitor mixture ratio feedback control. The green LED will function as described in MODE I. If vehicle is in open loop, the red LED and green LED will remain on or off. In order for results to be valid, vehicle must be in closed loop. In closed loop, the red LED remains off if the system is running rich, comes on if the system is running lean, and blinks at the same time with the green LED if system is within 5% of the exact air/fuel ratio.
Mode III
-When this mode is accessed, the codes stored in the ECM's memory will be flashed by the green LED and red LED on the side of the ECM. The red LED will light first. This is the first digit of the trouble code; the green LED will flash next, showing the second digit of the code. For example: 2 flashes of the red LED followed by 1 flash of the green LED corresponds to Code 21.
Mode IV-
This mode is used for checking the throttle plate (TP) switch, starter, and vehicle speed switch status. When the TP switch or starter switch is activated, the red LED will briefly flash as the status changes. For VSS status, the green LED will remain off when vehicle speed is less than 12 mph (19 km/h) and come on when vehicle speed is greater than 12 mph (19 km/h).
Mode V-
This mode represents a real-time diagnostic test of the crank angle sensor, ignition signal and the mass airflow signal. The malfunction code will be displayed only when the malfunction occurs and will not be stored in memory. The output code will appear as a single or short string of pulses. Count the number of pulses for the malfunction code.



1 pulse-CMP sensor signal lost or noise in signal 2 pulses-MAF Sensor signal abnormal 3 pulses-Fuel pump circuit shorted or open 4 pulses-Ignition signal lost

Apr 19, 2011 | 1987 Nissan Pulsar

1 Answer

How do I wire a remote door lock to my 1995 mitsubishi eclipse , what are the wire colors for the power door locks?


Hope this helps. It's for a 2004 eclipse remote start.

12volts white/red (40A) + ignition harness
Starter black/red + ignition harness
Second Starter N/A
Ignition green + ignition harness
Second Ignition N/A
Third Ignition N/A
Accessory blue/red + ignition harness
Second Accessory blue/black + ignition harness
Keysense blue/red ignition harness
Notes: This wire rests at ground, and goes to an open circuit when the key is inserted into the ignition cylinder.
Power Lock purple - pin 33 at ETACS ECU
Notes: The ETACS ECU is attached to the back of the fuse box.
Power Unlock lt. green/red - pin 34 at ETACS ECU
Notes: The ETACS ECU is attached to the back of the fuse box.
Lock Motor lt. green 5wi pin 19, 28 pin plug below fuses
Unlock Motor green/red 5wi pin 22 at ETACS ECU
Notes: The ETACS ECU is attached to the back of the fuse box.
Parking Lights+ green/white + pin 2, 15 pin plug above fuses
Parking Lights- N/A
Hazards green - pin 55 at ETACS ECU
Notes: The ETACS ECU is attached to the back of the fuse box.
Turn Signal(L) green/blue + pin 8, 15 pin plug above fuses
Turn Signal(R) green/yellow + pin 13, 15 pin plug above fuses
Reverse Light red/blue + pin 9, 43 pin plug in driver kick
Door Trigger see notes - see notes
Notes: The driver door trigger is lt. green, pin 6, in a 15 pin plug above the fuses. The passenger door is lt. green/black in pin 65 at the ETACS ECU. Use both wires and diode isolate each.

The ETACS ECU is attached to the back of the fuse box.
Dome Supervision green/orange - pin 1, 3 pin plug above fuses
Trunk/Hatch Pin red - pin 62 or 37 at ETACS ECU
Notes: It is in pin 62 on the coupes, and in pin 37 on the convertible spyders.

The ETACS ECU is attached to the back of the fuse box.
Hood Pin green/red - pin 24 at ETACS ECU
Notes: The ETACS ECU is attached to the back of the fuse box.
Trunk/Hatch Release green/white 5wi pin 32 at ETACS ECU
Notes: The ETACS ECU is attached to the back of the fuse box.
Power Sliding Door N/A
Factory Alarm Arm lt. green/black - pin 42 at ETACS ECU
Notes: Meter this wire while turning the key in the driver door key cylinder.

The ETACS ECU is attached to the back of the fuse box.
Factory Alarm Disarm orange - pin 25 at ETACS ECU
Notes: Meter this wire while turning the key in the driver door key cylinder.

The ETACS ECU is attached to the back of the fuse box.
Disarm No Unlock blue/red - pin 27 at ETACS ECU
Notes: Meter this wire while turning the key in the hatch/trunk key cylinder.

The ETACS ECU is attached to the back of the fuse box.
Tachometer white or black/white ac engine speed detection connector
Notes: The engine speed detection connector is a single pin connector in the fuse/relay box under the hood.

Can also go to one of the ignition coils or the distributor assembly and use the black/blue or white/green wire.
Wait to start N/A
Brake Wire green/orange + brake pedal switch
Parking Brake yellow/green - parking brake switch
Horn Trigger lt. green/black - pin 44 at ETACS ECU
Notes: The ETACS ECU is attached to the back of the fuse box.
Memory Seat 1 N/A
Memory Seat 2 N/A
Memory Seat 3 N/A
Interface Module: Category:
Immobilizer Bypass Required:
Yes Type:
Transponder
Part #: 556UW
Alternate Part1 #: DesignTech 20402
Alternate Part2 #: DesignTech 29402
Notes: Standard on all models.

Good luck.

Mar 02, 2010 | 1995 Mitsubishi Eclipse

1 Answer

What do codes p0335 and p0341 mean on 1996 Cavalier?


when your engine went into that 5 second sputter,
your computer or "PCM" did not get a constant signal from the crank or cam sensors that the engine was running.
These two sensors tell the computer what RPM the engine is turning so it can adjust fuel and spark.

Nov 21, 2009 | 1996 Chevrolet Cavalier

1 Answer

Car slipped out of DRIVE position only revving the RPM's.


Tranny low on fluid. When you stop or turn it all goes to one side causing the problems.

Jul 28, 2009 | 2003 Chrysler 300M

2 Answers

Air bag light comes on and stays on. Never any accidents.


Had the same problem, found the wire disconnected under the driver seat (there is a yellow plug and with one red wire, which is fine, and one green wire, which is broken. Fixed the wire, light went off.
Email me if you need details adrian.hanea@gmail.com

Apr 07, 2009 | 2001 Lincoln LS

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