Mechanics

MY 98 WILL NOT START. NO FUEL INJECTO

1998 Kia Sportage

Electrical problem
1998 Kia Sportage 4 cyl Four Wheel Drive Automatic 199000 miles

My Sportage will crank but not start, ive replaced the fuel pump, regulator, new relays new computer ive got spark so its not a ignition problem. But I still have no fuel pulse to my injectors. I unhooked the neg. Batt. Cable and put a test light on it from the neg. Cable to neg. Batt. Post and it lights up. So ive obviously got a electrical problem somewhere but where and how do I start troubleshooting this problem? PLEASE HELP?
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Jd14600081
October 31, 2010.



Hi jd14600081,

Thank you for the donation.

The fuel injectors are commanded by the PCM to be grounded to pulse and if no pulsing are present, it means the PCM is faulty.

Since you have sparks, it means the cam and crank sensora are working correctly so you would have to get the PCM checked/tested.

KHLow2008
Oct 31, 2010.
Would the PCM cause unstable voltage? I'm getting a code P0561 and i'm also getting P1115 and one for Auxiliary imputs and outputs P1624 when I looked up the code online for the p1624 it dosent show a code deffinition for it. Also id there a difference between the PCM and the ECM or are they one in the same? Cause I already change the ECM. When I called AutoZone about the codes they said that the one of them had something to do with the cooling fan and one had something to do with the temprature censor. I did put a test light on the neg cable and touched it to neg terminal and it lights up. I then went thru and pulled all of the fuses one at a time. And got nothing from the ones under the dash. The light still stayed on. But I pulled the 15amp fuse under the hood and it went out. The problem with that is that the diagram that tells me what it goes to is worn off and I cant read it. Im also getting a reading that the MIL is on and should be on if the engine is running. But the car wont start. There is one more thing I was getting from the code reader. It said that it was alidating PID's and only verifyed 190 of 192. And when I looked up the freeze frame code it says that " DTC that caused freeze frame and gave me the code P1624
Any help that u could offer would be great and I hope that the info I just gave u is helpful.

Tiny
Jd14600081
Oct 31, 2010.
Here are the description and diagnostic procedures for the trouble codes. Yes, a faulty computer can trigger the codes.

PCM ( Power control Module) and ECM ( Engine Control Module) are both the same thing, only difference is that PCM includes the transmission control module whereas ECM is mainly refered for manual transmission.

DTC P0561: SYSTEM VOLTAGE UNSTABLE, DTC P0562: SYSTEM VOLTAGE LOW OR DTC P0563: SYSTEM VOLTAGE HIGH

Diagnostic Aids
DTC P0561 will set if system voltage is less than 2.5 volts. DTC P0562 will set if 4 minutes or more after engine starts, system voltage is 2.5-10 volts. DTC P0563 will set if 4 minutes or more after engine starts, vehicle speed is more than zero MPH and system voltage is more than 16 volts. Monitor runs continuously. Setting this DTC will not illuminate Malfunction Indicator Light (MIL).

Check for:
• Generator malfunction.
• Faulty battery.
• Open, high resistance, short to ground or intermittently poor contact between ignition switch, EGI main relay or battery backup circuit and Engine Control Module (ECM).

Procedure
NOTE:
Vehicle will not run if there is open at ECM in ignition, EGI main relay or battery backup circuit. If any fuses are blown, locate and repair short in appropriate circuit, then replace fuse before starting procedure.

1. Check battery condition and generator output. If problem does not exist, go to next step. If problem exists, repair as necessary.

2. Turn ignition on. Backprobe and measure voltage between ECM connector terminal No. 26 (Green wire) and ground. See Fig. 5 . Also, backprobe and measure voltage between ECM connector terminal No. 54 (Black/White wire) and ground. And backprobe and measure voltage between ECM connector terminal No. 58 (White/Red wire) and ground. If battery voltage exists at each terminal, go to next step. If battery voltage does not exist at a terminal, repair open in appropriate wire.

3. Drive vehicle while monitoring voltage at ECM connector terminals No. 26, 54 and 58. If voltage stays stable at battery voltage at each terminal, check connectors for loose, damaged or corroded terminals. If problem exists, repair appropriate connector. If voltage is unstable at a terminal, locate intermittent poor contact and repair as necessary. If voltage is unstable at ECM connector terminal No. 54, also check EGI main relay control circuit connections and wiring for intermittent poor contact. Repair as necessary.


http://www.2carpros.com/forum/automotive_pictures/192750_PCMConnector98SportageFig05_1.jpg



DTC P1115: ECT SIGNAL FROM ECM TO TCM

1. Ignition ON, engine OFF. Measure voltage between TCM connector No. C229 terminal No. 33 (White/Green wire) and ground. DO NOT disconnect connector. Voltage should be about .61 volt. If voltage is as specified, go to next step. If voltage is not as specified, go to step 3 .

2. Turn engine ON. Measure voltage as specified in step
1 . voltage should be about .73 volts. If voltage is as specified, replace TCM then go to step 4 . If voltage is not as specified, go to next step.

3. Turn ignition OFF. Check White/Green wire between ECM and TCM for any faults. Repair as necessary then go to next step. If wiring fault is not found, replace ECM then go to next step.

4. Erase DTC. Start engine and confirm that DTC does not reappear.

DTC P1624: MALFUNCTION INDICATOR LIGHT (MIL) REQUEST SIGNAL FROM TRANSMISSION CONTROL MODULE (TCM) TO ENGINE CONTROL MODULE (ECM)

Diagnostic Aids
This is only a request from TCM to ECM to turn MIL on after a fault is detected by TCM. The fault code is stored in TCM. Freeze frame data is stored in ECM under P1624 request code. Retrieve freeze frame data before clearing DTC P1624 from ECM.

Procedure
No procedure available from manufacturer.


KHLow2008
Nov 1, 2010.