2002 malibu doesn't start

Have a 2002 malibu base 3.1 v6 that will not start. Battery charged, motor cranks, pump pumps 52psi at the rail, pink wire to injectors has 12v, fuses good, injectors click when jumped manually but not when starting. CPM is not grounding the six individual injectors to open nozzles. Bad CPM or is there another sensor I should look at?

Do you have spark, will it start with starting fluid?

Car will start and run on gas fed thru throttle body manually.

Then you have no injector pulse. Remember one shorted injector can pull down the rest. The pcm is not grounding the injectors, check connections at ign module, pcm, both crank sensors, scan it also and see if you have cranking rpms.

Max, I don't think one bad injector will pull down the rest because it is sequential....If non are pulsing, could have a bad ICM, or possibly the Security system is acting up, but usually there is an initial pulse to the injectors and then nothing.....

Has this been scanned for "P" and "B" codes?

no codes showing, each of 6 injectors click when manually grnded. test light on connector shows no grnding of injectors(any) when cranking. not key recognition

Correct on sequential, probably blow a fuse though.

Thanks everyone for the help to date , would anyone know if any of the crankshaft or cam position sensors would cause this effect?

1952Don
I had the same problem and this worked for me
hotpipes
THEFT DETERRENT SYSTEM -2002 Chewolet Malibu LS Page I of I
30 I*in*t* L**rrr Frocedure
l. Tum ON the ignition, with the engine OFF.
2. Attempt to start the engine, then release the key to ON, vehicle will not start.
3. Observe the SECURITY telltale, after approximately l0 minutes the telltale will tum OFF.
4. Turn OFF the ignition, and wait 5 seconds.
5. Repeat steps I through 4 two more times for a total of 3 cycles/3O minutes, the vehicle is now
ready to relearn the PasslockrM Sensor Data Code and/or passwords on the r-rext ignition switch
transition from OFF to CRANK.
Important: The vehicle learns the PasslockrM Sensor Data Code and/or password on the next
ignition switch transition from OFF to CRANK. You must turn the ignition OFF befbre
attempting to start the vehicle.
6. Start the engine, the vehicle has now learned the PasslockrM Sensor Data Code and/or
password.
7. With a scan tool, clear any DTCs if needed, history DTCs will self clear after 100 ignition
cycles.
O 2008 Mitchell Repair Information Co., LLC.
http : //www.ondemand5. com/mric/common/asp/printart. aspx 312212013

You have hit the nail on the head, that was exactly the fix. Don't trust the theft light to blink when no key recognition.

This procedure resets, or relearns, the "R" code of the PassLock module.....

You are not out of the woods....the problem is not fixed....I guarantee this will happen again.....because a PassLock problem existed, the injectors were not firing....

You said no codes were showing....that's because you did not scan for "B" codes......code readers can't read "B" codes, only "P" codes......if you did, you would have found a B2958 or B2960 set....it's still in there in history.....

So you have three options.....fix it.....install a toggle switch, and use the procedure which will leave the Theft light on......or install a resistor in the circuit.....you will find the toggle/resistor procedures listed in previous posts, under "PassLock Problems/Fixes"

Eventually, the reset procedure will not work....and it's a pain in the ass to keep repeating....

Tech11
Can you give us any idea as to how to fix this problem other than installing a toggle switch?
I have been looking at a Innova 3160C scanner and I am hoping it can tell me which part to replace I was told that it can read B codes. by the Innova Rep. It's a new model.
I would appreciate any of your thoughts on this Idea.
hotpipes

Looks like the resistor installation is the way to go as a new switch etc is more than the car is worth and it does indeed happen again.

Tech11
Can you give us any idea as to how to fix this problem other than installing a toggle switch?
I have been looking at a Innova 3160C scanner and I am hoping it can tell me which part to replace I was told that it can read B codes. by the Innova Rep. It's a new model.
I would appreciate any of your thoughts on this Idea.
hotpipes
All codes are diagnostic only, not a "replace this" it's fixed...

aleekat & 1952Don
Which resistor and wear is located I have had to do the relearn program 6 times since we have talked. Is the resister located on the cars computer? My ignition switch has been replaced twice along with a copal fuel pumps and pump sensors. Is there a repair other than installing a switch.

hotpipes

clean your key with WD-40 or an equivalent, put the straw of the spray can in the keyhole of the switch and spray the inside of the switch excessively. This worked for me and have had no repeats of the problem since. too much pocket lint???

I don't know how lubing a blank key is going to help with the electronics of the system......

By adding oil/lubricant to the key/tumblers, you have now added something that will attract and hold onto foreign substances that are introduced to the lock cylinder via the the key....

Malibu's and Grand Am's were famous for having a hard time turning the key....the only fix was to replace the lock cylinder and tumblers....

Tech II
The lock cylinder has been replaced twice at a cost of about $456.00 each time the first one lasted about two and a half years. Shouldn't the part that receives the signal from the lock cylinder be replaced and what part would that be? Thank's for your input.
hotpipes

What is usually replaced is the PassLock sensor, that is the part that the lock cylinder slides into.....they usually come together as a unit(together, they slide into the ignition switch)....the lock cylinder has to be recoded with the correct tumblers....

The power and ground to the sensor comes from the BCM......the output signal from the sensor goes back to the BCM.....the BCM sends a fuel enable signal to the PCM, when the proper signal is received from the PassLock sensor...

So the possibilities are: bad PassLock sensor(again), an open in the wiring between the sensor and BCM, a bad connection in the harness at the BCM.....have not seen problems with the PCM or the wiring to it, cause this.....but as a last resort it can't be ruled out....

The two usual problems are the sensor or the connection at the BCM.....

WD-40 isn't a lubricant. It cleans the switch and then evaporates leaving a clean switch. Doesn't harm components inside switch. Compressed air computer cleaner might work as well. Worked for me!

"You can use WD-40® to protect, remove gunk, and lubricate thousands upon thousands of items wherever you go!

What I was saying was, using WD-40 is not going to fix a no start condition caused by a bad PassLock sensor.....all it may do is help to turn the key easier....

I am not familiar The BCM and PCM abbreviations. Could you help me out with those? I would also like to know if there is a way to test the old lock assembly. Is there any resistance readings or continuity test that will tell me the condition of the old lock assembly.
hotpipes

There aren't any "bad" passlock sensors, that just an excuse to sell you an overpriced keyswitch. It is just not able to read the key, before you buy a new switch clean the old one. Mechanics are in the business of selling you parts you don't need, what a surprise!

My key dose not have a chip in it so it is not able to read anything from the sensor.
hotpipes

What is usually replaced is the PassLock sensor, that is the part that the lock cylinder slides into.....they usually come together as a unit(together, they slide into the ignition switch)....the lock cylinder has to be recoded with the correct tumblers....

The power and ground to the sensor comes from the BCM......the output signal from the sensor goes back to the BCM.....the BCM sends a fuel enable signal to the PCM, when the proper signal is received from the PassLock sensor...

So the possibilities are: bad PassLock sensor(again), an open in the wiring between the sensor and BCM, a bad connection in the harness at the BCM.....have not seen problems with the PCM or the wiring to it, cause this.....but as a last resort it can't be ruled out....

The two usual problems are the sensor or the connection at the BCM.....
TechII
Wouldn't a scan show a bad BCM or PCM along with a bad passlock sensor or isn't a scanner capable of detecting those two items?

hotpipes

My 99 Malibu had theft light no start problem. Was told there were 2 small magnets inside ignition cylinder that have to suck on to key. Blow out keyhole with compressed air,then 2 small puffs of graphite. Wiggle key on and off, in and out and blow out with air. Don't know if its true but have not had problem for 7 months. Hope it works.

All of this talk and no real solution???? Well here we go then. If you have a no-start condition AND the security light is flashing OR if you drive around and the security light is on solid, you have a Passlock failure. Typically replacing the ignition lock won't fix this. Ditto for the switch. What needs to be replaced is the Passlock decoder. Replacing that will only result in same failure down the road. ANOTHER NOTE: if your dash is sporadic, gauges move oddly, or don't move at all you may have a bad cluster. THIS CAN RESULT IN A NO START AS WELL AND BEHAVE LIKE A PASSLOCK FAILURE.

That being said here's how to fix this. Go to Radioshack and buy a few resistors (usually around 400-1900 ohm) Take out radio (don't unplug it unless you have code to unlock it. Just unhook the antenna and have it sit over on the right side of opening. Look inside the hole and find the ignition wires. Inside that bundle you will find 3 small wires (yellow, black, white). The yellow is the passlock wire and the black is the ground reference. Cut the yellow wire and you will connect one end of the resistor to the cut end AWAY from ignition switch. The other end of resistor will be connected to the black wire. For added security I like to then run a jumper wire from that black wire to chassis ground. Once you do this, start the passlock relearn sequence by trying to start the car. If it fails to start AND the passlock light is flashing, let it sit with the ignition on for 10 minutes. After 10 minutes the light should go solid and then out. Once it does this, turn off ignition and count to 3 then restart. If it fails to start, repeat again another 10 minutes. It could take up to an hour for this to take. If it doesn't take, change resistance value then try the relearn sequence.