I understand you can cycle the ignition in a 1993 jeep for trouble shooting. Correct? What is the sequence?


Asked by Sep 10, 2016 at 04:10 PM about the 1993 Jeep Cherokee

Question type: Maintenance & Repair

I understand you can cycle the ignition in a 1993 jeep for trouble shooting.
Correct?  What is the sequence?

4 Answers


Turn the ignition switch ON, OFF, ON, OFF, ON and observe the CHECK ENGINE LIGHT. The CHECK ENGINE LIGHT should begin to flash a series of codes. The flashes will be separated by short an long pauses. The long pauses separate the "ones" and "tens" positions, and each code from the next. A code 55 will be displayed at the end of the test.


Right out of the book.


Codes: 11 IGN reference signal. 13 Fault in the map sensor pneumatic circuit. 14 Fault in the map sensor electrical circuit. 15 Fault in the vehicle speed sensor circuit. 17 Engine running too cool. 21 Problem in the oxygen feedback circuit. 22 Fault in the coolant temperature sensor circuit. 23 Air temperature sensor. 24 Fault in the throttle position sensor circuit. 25 Fault in the IAC motor drive circuit. 27 Fault in injector driver interface circuit. 31 Purge solenoid circuit. 33 Fault in air conditioning cutout relay circuit. 34 S/C solenoid circuits. 35 Fault in fan relay circuit. 41 Fault in the charging system or no field current. 42 Fault in the ASD relay driver circuit. 43 Fault in ignition coil control circuit. 44 Battery Temp Voltage. 46 Battery voltage is too high. 47 Battery voltage is too low. 51 Lean condition is indicated. 52 Rich condition is indicated. 53 Internal problem in module. 54 Fault in the distributor high data rate pickup circuit. 55 Completion of fault code display. 62 Unsuccessful attempt to update EMR mileage. 63 Unsuccessful attempt to write to an EEPROM location by the controller. 76 Fuel pump resistor by-pass relay circuit


Hope all this helps.

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