Question about 2003 Pontiac Vibe

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No power to diagnostic port or fuel or ignition or starter pulse 03 vibe any ideas

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  • Pontiac Master
  • 14,585 Answers

All these have different fuses, except a main fuse that supplies power to the different fuses. Check those first. Check power from the battery to the fuse panel. Could be a bad fuse panel. If you check voltage with a volt meter, does it show any voltage at the fuses? If 0, then look to the wires first. If they show varying voltage(like2,3,4.5,or 6) suspect the fuse panel. The voltage should be 0 or battery voltage.

Posted on Dec 18, 2016

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  • Pontiac Master
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Diagnostic port ? you do mean where you would plug in a scan tool ? What do you mean by this (starter pulse ?) The starter won't spin over when you turn the key to the start position ?

Pin # 16 at the DLC get's B+ voltage from OBD 7.5 amp I/P fuse box . What fuel ? fuel pump , injectors . Ignition ? Ignition switch , or ignition system ,

Posted on Dec 18, 2016

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1 Answer

2000 Oldsmobile alero, new fuel filter, pump fires, wont start. Any ideas? Also, where is the port to check for fuel pressure located?


I am assuming you know for sure you have spark at the plugs.
The port should be on the rail near the injectors.
You may also need to check for injector power and ground pulse.

Jan 11, 2016 | Oldsmobile Cars & Trucks

1 Answer

Pontiac vibe ignition switch? Intermittent dash


Basic electrical problem . loose connection on a ground circuit ,high resistance . There are no magical fixes for automotive electrical gremlins . Finding electrical wiring diagrams an voltage drop testing the electrical circuits is the only way to find the problem .
When the ignition switch is placed in the Start position 12 volts is supplied through the Park/Neutral Position Switch or Clutch Pedal Position switch to the switch and coil side of the Starter Cut Relay. If theft is not active the Theft Deterrent Module grounds the control side of the Starter Cut Relay closing its switch. Power then travels to the coils side of the ST Relay with ground at G200 closing the ST Relay. Power then flows from the Main fuse in the Fuse Block - Underhood through the switch side of the ST Relay and then to the S terminal of the Starter Solenoid. Ground is found through the engine block.

How to voltage drop test starter motor circuit

How to test starter engine doesn crank GM 3800 engine

Knowing how the systems work is one of the first priority ! Learning how electrical systems work .
Learning how to read wiring diagrams an use them for pin pointing areas for testing .
Check for DTC'S - diagnostic trouble codes , this should be one of the first steps .
Basic Electricity for Service Techs Ohm law Current Flow Opens Shorts
How to Use Multimeter to Troubleshoot Common Problems
Free wiring diagrams here
http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model and engine size. Under system click on engine then under subsystem click starting . I would start with a voltage drop test of the main battery cable to the starter motor.

Starter Voltage Drop




Jul 13, 2017 | 2003 Pontiac Vibe

1 Answer

2oo3 mercury moutaineer wont turn over from ignition but from silenoid it will. any ideas


Sounds like your Interlock switch on the Brake pedal switch or the linkage in the shift cable is out of time. Check brakelights.

There was a problem in vehicle lurching when started. There were 2 different ideas to solve this. One system would allow the starter to work and the engine to run, but made shifting out of Park impossible without a foot on the brake. The other system required the foot on the brake and this signal would allow the starter solenoid to get a pulse from the Ignition switch. Some required the Gearshift to be in Park or Neutral before the brake signal could clear the Ignition and provide a pulse.

So your brake pedal switch probably is out of position or broken. If it is good, then the Gearshift position must be slightly off.

Also check the small wires on the solenoid to see if Voltage is present whenkey is turned to start and foot on brake.

Apr 18, 2013 | 2003 Mercury Mountaineer

1 Answer

97 ranger working fine yesterday,will not start today


You can't tell weak too well just looking

Check for injector pulse while cranking
like you did for spark

Check fuel pressure KO/EO

Dec 15, 2012 | Cars & Trucks

1 Answer

2002 Daewoo Lanos 1.6 L engine- Car cranks over, but will not start. Sprayed gas in air intake manifold and car will start and idle perfectly. The whole ignition system has been replaced. Fuel system...


Either the injectors are incapable of spraying fuel or they aren't receiving an electrical pulse. That might be because of faulty wiring/connections or a faulty ECU or it could be the ECU hasn't enough information in order to send a pulse, again because of faulty wiring or connections, the crank sensor or perhaps that is what the security immobiliser does when it is armed.

Check for an injector pulse with an oscilloscope or noid light.

Jul 29, 2017 | 2002 Daewoo Lanos

2 Answers

98 chevy 350 does not star check fuel ok,check spark ok, if I put some starter fluid on the throttler valve it run, but then turn off


The fuel pressure has to be 55 to 60 psi. even if the fuel pressure was 50 psi it will start but stumble on acceleration.by adding starter fluid you verified the problem

Sep 13, 2011 | 1998 Chevrolet C3500

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

Where is starter located on 03 pontiac vibe


hi this is located on the right hand side of the engine on top of the transmission, the best way to locate it is to follow the + lead from the battery and on the end of that will be the starter motor....hope this helps

Jun 03, 2010 | 2003 Pontiac Vibe

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