Diagnostic Soon Engine Service S3 1996/1997

Comme expliqué dans un de mes posts depuis hier matin j'ai le voyant Soon Engine Service qui s'allume et s'éteint tout les 2 minutes

Afin de résoudre mon problème mais aussi d'aider les prochains à qui cela arrivera, je vous propose une méthode commune pour diagnostiquer et résoudre ce problème

Première étape si pas de valise, procédure des erreurs de nos S3:
http://julien.manche.online.fr/chrysler/codes.html

les different code erreur pour les modèles 1996 et 1997

Code 11-Intermittent loss of either camshaft or crankshaft position sensors.

Code 11-Crankshaft position sensor target windows have too much variation.

Code 11-No crank reference signal detected during engine cranking.

Code 12-Direct battery input to PCM was disconnected within the last 50 Key-On cycles.

Code 13-No variation in MAP sensor signal is detected or no difference is recognized between the engine MAP reading and the stored barometric pressure reading from start-up.

Code 14-MAP sensor voltage too high or too low.

Code 15-No vehicle speed sensor signal detected during road load conditions.

Code 17-Closed loop temperature not reached-engine does not reach 50°F within 5 minutes with a vehicle speed signal.

Code 17-Engine is cold too long-engine coolant temperature remains below normal operating temperature during vehicle travel; possible thermostat problem.

Code 21-Oxygen sensor signal-neither rich or lean condition is detected from the oxygen sensor input.

Code 22-Engine Coolant Temperature (ECT) sensor voltage too HIGH/LOW-ECT sensor input above or below the acceptable voltage limits.

Code 23-Intake Air Temperature (IAT) sensor voltage HIGH/LOW-IAT sensor input above or below the acceptable voltage limits (2.4L engine only).

Code 24-Throttle Position Sensor voltage does not agree with the MAP sensor.

Code 24-TPS voltage above or below the acceptable voltage limits.

Code 25-Idle Air Control (IAC) motor circuits-short or open detected in 1 or more of the IAC control circuits.

Code 25-Target idle not reached-actual idle speed does not equal the target idle speed.

Code 27-Fuel injector control circuit-fuel injector output driver does not respond properly to the control signal.

Code 31-Evap purge solenoid circuit-an open or short detected in the duty cycle purge solenoid circuit.

Code 31-Evap purge flow monitor failure-Insufficient or excessive vapor flow detected during evaporative emission system operation.

Code 31-Evap leak monitor small leak detected-A small leak has been detected by the leak detection monitor.

Code 31-Evap leak monitor large leak detected-leak detection monitor is unable to pressurize EVAP system, indicating a large leak.

Code 31-Leak detection pump solenoid circuit-leak detection pump solenoid circuit fault (open or short).

Code 31-Leak detection pump switch or mechanical fault-leak detection pump switch does not respond to input.

Code 31-Evap leak monitor pinched hose found-plug or pinch found between purge solenoid and fuel tank.

Code 32-Exhaust Gas Recirculation (EGR) system failure-required change in air/fuel ratio not detected during diagnostic test.

Code 32-EGR solenoid circuit-open or short detected in the EGR transducer solenoid circuit.

Code 33-Open or short detected in the A/C clutch relay circuit.

Code 33-Air conditioner pressure sensor voltage too high-sensor input voltage is above 4.9 volts.

Code 33-Air conditioner pressure sensor voltage too low-sensor input voltage is below 0.098 volt.

Code 34-Speed control solenoid circuit-open or short detected in the speed control vacuum or vent solenoid circuits.

Code 35-Radiator fan control relay circuit-open or short detected in the low speed radiator fan relay control circuit.

Code 37-Torque converter clutch solenoid/Trans relay circuits-open or short detected in the torque converter part throttle unlock solenoid control circuit (2.4L engine w/31TH transmission and 3.0L engine only).

Code 37-Torque converter clutch (no RPM drop at lockup)-relationship between engine speed and vehicle speed indicates no torque converter clutch engagement (automatic transmission only).

Code 37-Park/Neutral switch stuck in PARK or in gear-incorrect input state detected for the P/N switch (automatic transmission only).

Code 41-Alternator field not switching properly-open or short detected in the alternator field control circuit.

Code 42-Autoshut-down (ASD) relay control circuit-open or short detected in the ASD relay circuit.

Code 42-No ASD relay output voltage at the PCM-open condition detected in the ASD relay output circuit.

Code 42-Fuel pump relay control circuit-open or short detected in the fuel pump relay control circuit.

Code 42-Fuel level sending unit voltage too low-open circuit between PCM and fuel gauge sending unit.

Code 42-Fuel level sending unit voltage too high-circuit shorted to voltage between PCM and fuel gauge sending unit.

Code 42-No movement of the fuel level sending unit detected over miles.

Code 43-Ignition coil #1, 2, or 3 primary circuits-peak primary circuit current not achieved within the maximum allowable dwell time.

Code 43-Engine cylinder misfire-engine cylinder misfire detected in one or more cylinders.

Code 44-Battery temperature sensor voltage too HIGH/LOW-battery temperature sensor input voltage above or below an acceptable range.

Code 45-EATX controller DTC present-an automatic transmission input DTC has been set in the transmission controller.

Code 45-Park/Neutral switch failure-incorrect input state detected for the park/neutral switch.

Code 46-Charging system voltage too high-battery voltage sense input above target charging voltage during engine operation.

Code 47-Charging system voltage too low-battery voltage sense input below target charging voltage during engine operation. Also, no significant change detected in battery voltage during active test of the alternator output circuit.

Code 51-Fuel system lean-a lean air/fuel mixture has been indicated by an abnormally rich correction factor.

Code 52-Fuel system rich-a rich air/fuel mixture has been indicated by an abnormally lean correction factor.

Code 53-Internal controller failure or PCM failure SPI communications-PCM internal fault condition detected.

Code 54-No cam signal at the PCM-No camshaft position sensor signal detected during engine cranking.

Code 55-Completion of fault code display on Check Engine lamp.

Code 61-Barometric pressure out of range (Key-On)-MAP sensor has a baro reading below an acceptable value.

Code 62-PCM failure SRI mileage not stored-unsuccessful attempt to update EMR mileage in the PCM EEPROM.

Code 63-PCM failure EEPROM write denied-unsuccessful attempt to write to an EEPROM location by the PCM.

Code 64-Catalytic converter efficiency failure-catalyst efficiency below required level.

Code 64-CNG system pressure too high-compressed natural gas pressure sensor reading above acceptable voltage (if equipped).

Code 65-Brake switch sense circuit-No release of brake switch seen after too many accelerations or no brake switch activation seen on several DECELS to RESET (OMPH).

Code 66-No CCD messages recieved from the Body Control Module (BCM) or the Transmission Control Module (TCM).

Code 71-5 Volt supply output too low-5 volt output from the regulator does not meet minimum requirement.

Code 72-Right rear (or just) catalyst efficiency failure-catalyst efficiency below required level.

Code 77-Speed control power relay; or speed control 12V driver circuit-malfunction detected with power feed to speed control servo solenoids.

Dans mon cas j'ai les codes :
12 Code 12-Direct battery input to PCM was disconnected within the last 50 Key-On cycles.

51 Code 51-Fuel system lean-a lean air/fuel mixture has been indicated by an abnormally rich correction factor.
21 Code 21-Oxygen sensor signal-neither rich or lean condition is detected from the oxygen sensor input.
21 Code 21-Oxygen sensor signal-neither rich or lean condition is detected from the oxygen sensor input.
55 Code 55-Completion of fault code display on Check Engine lamp.

Les 12 et le 55 ne sont pas des erreurs donc, mes deux problèmes sont le 51 et le 21

Voila pour la partie diagnostique

Sonde oxygène HS (21) => mélange pauvre (51)

Ces 2 défauts allument le voyant en roulant.
Change la sonde et ce devrait être bon.

Salut Eug

Ca commence à s'allumer dès que je démarre
Je pensais à ça ou je me demandais si cela ne pouvais pas venir du filtre que j'ai changé la semaine dernière, si il n'y avait pas un raccord qui était pas mal enfoncé

D'après les défauts cela me semble clair, mais on ne peut jamais exclure une autre source de problème.

La revue d'atelier Chrysler donne pour le 21 une sonde d'oxygène qui reste au centre ou en court circuit ...
Donc la sonde HS est détectée, et en plus comme elle est HS le mélange n'est pas bon d'où le 51.

okidoki

et tu sais pourquoi il me donne 2 fois la 21 ?

Pas de réponse précise sur cela ...

Les défauts s'enregistrent en mémoire en fonction de leur arrivée.
Perso j'opterais pour l'option que le 21 peut donner 2 sortes de défaut et comme il n'a pas pu définir lequel se produisait vraiment les 2 ont été enregistrés.
Ou les 2 se sont vraiment produit

J'ai reçu ma nouvelle sonde aujourd'hui,
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Je n'aime vraiment pas ça mais vu que j'étais assez pressé j'ai commandé de l'adaptable

N'ayant pas de douille pour sonde j'en ai profité pour en acheter une

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J espére que ca soit bien la sonde mon problème, même si j ai un gros doute

J'ai profité de quelques heures de libre pour m'attaquer au changement de la sonde

Apres quelques jours depuis le changement de ma sonde, cela semble être régler, j'ai toujours un peu de trou à l'allumage, mais roulant 100% éthanol, il y a de forte chance que cela vienne de ça

En résumé si vous avez les voyants qui s'allument, vérifier en premier si il y a des codes defaults .

Et bien voila !!!
Une bonne chose