RE: success! (check engine light)

["Widiker, John D" <john.widiker@xxxxxxx>]

Early 90's mopars used the check engine light and cycling the ignition
switch to dump the codes. It worked on my dad's 91 wrangler. On off on
off on with the key and the codes should dump, here is a list of them:

DTC No.
 Scan Tool Display
 Description of Conditions
 
 
  
  
 
11  (1)
 No reference signal during cranking
 No camshaft reference signal detected during engine cranking.
 
 
  
  
 
12  (1)
 Battery disconnect
 Battery input to PCM disconnected during last 50 key starts.
 
 
  
  
 
13  (2)
 No change in MAP from start to run
 No variation in MAP sensor is detected

 

No difference recognized between engine MAP reading and barometric

pressure reading at start-up.

 

14  (2)
 MAP voltage too low
 Map sensor input below minimum acceptable voltage.
 
or
  
  
 
 
 MAP voltage too high
 Map sensor input above maximum acceptable voltage.
 
 
  
  
 
15  (2)
 No vehicle speed signal
 No vehicle distance (speed) sensor signal detected during road load
conditions.
 
 
  
  
 
17  (1)
 Engine is cold too long
 Engine coolant temperature remains below normal operating temperatures
during vehicle travel (thermostat).
 
 
  
  
 
21  (2)
 O2 sensor voltage at center
 Neither rich or lean condition is detected from the oxygen sensor
input.
 
or
  
  
 
 
 O2 sensor voltage high
 Oxygen sensor input voltage maintained above normal operating range.
 
 
  
  
 
22  (2)
 ECT sensor voltage low
 Sensor input below the minimum acceptable voltage.
 
or
  
  
 
 
 ECT sensor voltage high
 Sensor input above the maximum acceptable voltage.
 
 
  
  
 
23  (2)
 Intake air temp. sensor voltage high
 Sensor input above the maximum acceptable voltage.
 
or
  
  
 
 
 Intake air temp. sensor voltage low
 Sensor input below the minimum acceptable voltage.
 
 
  
  
 
24  (2)
 TPS voltage low
 Sensor input below the minimum acceptable voltage.
 
or
  
  
 
 
 TPS voltage high
 Sensor input above the maximum acceptable voltage.
 
 
  
  
 
25  (2)
 IAC motor circuits
 An open or shorted condition detected in one or more of the IAC control
circuits.
 
 
  
  
 
27  (2)
 Injector #1 control circuit
 Injector output driver does not respond properly to the control signal.
 
or
  
  
 
 
 Injector #2 control circuit
 Injector output driver does not respond properly to the control signal.
 
or
  
  
 
 
 Injector #3 control circuit
 Injector output driver does not respond properly to the control signal.
 
or
  
  
 
 
 Injector #4 control circuit
 Injector output driver does not respond properly to the control signal.
 
or
  
  
 
 
 Injector #5 control circuit
 Injector output driver does not respond properly to the control signal.
 
or
  
  
 
 
 Injector #6 control circuit
 Injector output driver does not respond properly to the control signal.
 
 
  
  
 
33  (1)
 A/C clutch relay circuit
 An open or shorted condition detected in the A/C clutch relay circuit.
 
 
  
  
 
34  (1)
 Speed Control solenoid circuits
 An open or shorted condition detected in the speed control vacuum or
vent solenoid circuits.
 
 
  
  
 
35  (1)
 Rad Fan Control relay Circuit
 An open or shorted condition detected in the radiator fan relay
circuit.
 
 
  
  
 
41  (2)
 Generator field circuit
 An open or shorted condition detected in the generator field control
circuit.
 
 
  
  
 
42  (1)
 ASD relay control circuit
 An open or shorted condition detected in the auto shut down relay
circuit.
 
or
  
  
 
 
 No ASD voltage sense
 No ASD voltage sensed at PCM.
 
 
  
  
 
44  (1)
 Battery temp. voltage
 Battery temperature sensor volts out of range.
 
 
  
  
 
46  (2)
 Charging voltage high
 Battery voltage sense input above target charging voltage during engine
operation.
 
 
  
  
 
47  (2)
 Charging voltage low
 Battery voltage sense input below target charging voltage during engine
operation.
 
 
  
  
 
51  (2)
 Lean O2 signal
 Oxygen sensor signal indicates lean fuel/air ratio condition during
engine operation.
 
or
  
  
 
 
 Adaptive memory rich
 Added adaptive memory at rich limit.
 
 
  
  
 
52  (2)
 Rich O2 condition
 Oxygen sensor signal indicates rich fuel/air ratio condition during
engine operation.
 
or
  
  
 
 
 Adaptive memory lean
 Added adaptive memory at lean limit.
 
 
  
  
 
53  (1)
 PCM failure
 Internal PCM fault detected.
 
 
  
  
 
54  (1)
 No cam signal
 No fuel sync (cam position) signal detected during crankshaft rotation.
 
 
  
  
 
55  (1)
 Display not shown on scan tool
 Completion of fault code display on Malfunction Indicator Lamp (Check
Engine Lamp)
 
 
  
  
 
62  (1)
 PCM failure
 PCM failure
 
 
 SRI miles not stored
 SRI miles not stored
 
 
  
  
 
63  (1)
 PCM failure
 PCM failure
 
 
 EEPROM write denied
 EEPROM write denied
 

-----Original Message-----
From: Mark Price [mailto:mprice@xxxxxxxxxx] 
Sent: Sunday, May 29, 2005 9:22 PM
To: mail@xxxxxxxxxxxx
Cc: AMC-DelMarVA@xxxxxxxxxxxxxxx; mail@xxxxxxxxxxxx
Subject: success!


It's legal and on the road again!
I had to do several circling procedures and play phone tag with
Hagertys, but the insurance was in place last night and today I actually
drove the American on it's maiden voyage! Not too far, just a few miles
to get a feel for things. It is much better then before. I can drive it
and shift gears with no lurching and hesitation, My knees don't hit the
steering wheel now that it has tilt either!
  I do have an intermittant check engine light. Is there a way to get a
code out of a 91 H.O system without a code reader?
  I'm a pretty sure it's full throttle power is down from the 4 barrel
setup , but the driveability is awesome! 
  I have some little things to go over before I start putting any
serious miles on it. Nothing too serious though.
  I'm just plain glad to finally get it to this point!!!

Mark Price
mprice@xxxxxxxxxx
Morgantown, WV
69 AMC rambler, 4.0L, EFI, 5 speed 
65 Ambassador Conv, 327 AUTO, Basketcase