Can anyone please tell me what type of code reader for a '95 is the correct one?
Is it the style I or II ?? I have checked old threads and I'll be damned if I can figure it out....can anyone tell me?

 

THe 95 was kind of a hybrid. It's pretty much an OBDI code system nestled behind an OBDII connector.

I can't remember which post it was, but a few weeks ago I remember a thread where someone also said the 95 had a few OBDII codes thrown in as well as the first year to get a rear O2 sensor...

With the mix of codes and different connector, it's doubtful you'll be able to find an aftermarket code reader that will work for you 100%. If most of the codes are still OBDI, I would suggest trying to make a cable and use WinALDL and a laptop. You can fit a 16 pin OBDII connector on your cable, but the software will give you the OBDI codes... Of course, it doesn't help you with any additional OBDII codes in the system.

Best bet is probably the paperclip....

 

Just short these two pins together with a paper clip and turn the key forward to ON position (engine off) Then read codes on speedometer.


To repeat sequence turn key to off for 5 seconds and then back to on.

Be sure to remove paper clip when done and before starting car.

 

Ihave a 95 vet and I use the Actron CP9150. It reads both OBD I & II codes. For the 1995, you use the CP 9150 with the newer (96 & after) OBD II cable if your 1995 has the new connector (16 pin vs 12 pin). works fine. CP9150 is rather expensive, but works on newer cars too.

good luck.

 

Don't waste money ona code reader because with a '95 you don't need one. She'll show you any stored codes on the LCD speedo display when you short pin 4 to pin 12 using a bent paper clip. Here's the gig on it:

To enter the diagnostic mode you will have to ground #12 to #4 on the
DLC. The DLC is numbered, top row, left to right, 1 thru 8. The bottom row is, left to right, 9 thru 16. Ground the pins & then turn the ignition to "on", but donot start. When the manual mode is entered the speedo shud be blank, & the trip monitor shud display 1.0. The indicator "----" will be displayed on the speedo if the end or the
beginning of a list of DTC"S is reached. To display CCM DTC"S , select the display mode by pressing the "Trip/odo" button until 1.1 appears in the trip monitor area of the cluster. Then press the "Eng/met" button to display the first DTC. Continue pressing the "eng/met" button
to display additional DTC"S until the end of information indicator
("____") is displayed in the speedo. A C-12 indicates no stored DTC"S
for the CCM.

If you have to go backwards use the "Fuel info" button.

The following are the various functions you can bring up by using the above procedure:

1. 1.0 Waiting for instructions (CCM).
2. 1.1 Display CCM DTC"S.
3. 1.2 Display CCM data.
4 1.2 Display CCM insputs status.
5. 1.4 Cycle CCM outputs.
6. 1.7 Clear CCM DTC"S.
7. 4.0 Waiting for instructions (PCM/ECM).
8. 4.1 Display PCM/ECM DTC"S.
9. 4.7 Clear PCM/ECM DTC"S.
10. 9.0 Waiting for instructions ABS/TCS.
11. 9.7 Clear ABS/TCS " DTC"S.

Same info more specifically described:

You short pin "12" to pin "4" and turn the ignition switch to "On" without starting the engine.
The speedometer will display any codes using the same protocol as the 1990-1993 model but there are some changes in the designation for the modules plus additional modules are added:
Module "1" is still the CCM module.
Module "4" is now called the PCM module (Powertrain Control Module) because automatic transmission computer control was added to Engine Control Module in 1994.
Module 7 (on the 1996 model only) is the RTD module. (This is the Real Time Dampening module which replaced the Selective Ride Control module in 1996).
Module 9 is the ABS/ASR module number from 1994 through 1996.
Finally, Module "A", the DERM (Dynamic Energy Control Module --- (the air bag control module) will be requested to show any codes.
Just like the 1990-1993 display, you read the codes on the speedometer (big) and read the module number on the trip odometer (small).
A series of dashed lines for instance “ - - -“ indicates no more stored codes for that module.
A code showing as “C12” for the CCM module (module #1) means no codes are stored. So C12 is a good thing to see.
Again, you can cause the codes to repeat by turning the ignition off for five seconds and then back on.
Turn the ignition off and remove the short to restore normal operation.

To clear codes in the CCM proceed as follows:

1. With ignition "off" ground terminal #12 of the DLC (use bent paper clip to connect pin 4 to pin 12)

2. Turn ignition "on".

3. Press trip/odo button on the DIC until 1.7 appears in the trip
monitor area of the instrument cluster.

4. Press eng/met button on the DIC & hold until "---" appears in the
speedometer area of the cluster, this will clear CCM DTC'S.


To clear PCM/ECM codes do the following:


1. Press the trip reset button on the DIC until the desired system is displayed. In this case it will be 4.0.

2. Press trip/odo button on the DIC until the desired diagnostic mode(4.7) is displayed on the trip monitor area of the cluster.

3. Press & hold the eng/met button on the DIC until "---" is
displayed in the speedometer area of the cluster, this will clear PCM codes.


To clear ABS/ASR codes do the following:

Same as above but you’re looking for “9.7” on the trip odo



P.S. If the problem still exists the code(s) will return after engine operation

The DTC Error codes defined:

94 95 OBD I LT1 DTCs

DTC 11 - Malfunction Indicator Lamp (MIL) Circuit
DTC 13 - Bank I (Left) Heated Oxygen Sensor (HO2S) Circuit (Open Circuit)
DTC 14 - Engine Coolant Temperature (ECT) Sensor Circuit ( Voltage Low, High Temp)
DTC 15 - Engine Coolant Temperature (ECT) Sensor Circuit ( Voltage High, Low Temp)
DTC 16 - Distributor Ignition System (Low Resolution Pulse)
DTC 18 - Injector Circuit(s)
DTC 21 - Throttle Position (TP) Sensor Circuit (Signal Voltage High)
DTC 22 - Throttle Position (TP) Sensor Circuit (Signal Voltage Low)
DTC 23 - Intake Air Temperature (IAT) Sensor Circuit ( Voltage High, Low Temp)
DTC 24 - Vehicle Speed Sensor (VSS) Circuit
DTC 25 - Intake Air Temperature (IAT) Sensor Circuit ( Voltage Low, High Temp)
DTC 26 - Evaporative Emission (EVAP) Canister Purge Solenoid Valve Circuit
DTC 27 - Exhaust Gas Recirculation (EGR) Vacuum Control Signal Solenoid Valve Circuit
DTC 28 - Transmission Range (TR) Pressure Switch Assembly Fault
DTC 29 - Secondary Air Injection (AIR) Pump Circuit
DTC 32 - Exhaust Gas Recirculation (EGR)
DTC 33 - Manifold Absolute Pressure (MAP) Sensor Circuit ( Voltage High - Low Vacuum)
DTC 34 - Manifold Absolute Pressure (MAP) Sensor Circuit ( Voltage Low - High Vacuum)
DTC 36 - Distributor Ignition System (Faulty High Res. or Extra Low Res. Pulse Detected)
DTC 37 - Brake Switch Stuck "ON
DTC 38 - Brake Switch Stuck "OFF
DTC 41 - Ignition Control (IC) Circuit (Open Circuit)
DTC 42 - Ignition Control (IC) Circuit (Shorted or Grounded Circuit)
DTC 43 - Knock Sensor (KS) Circuit
DTC 44 - Bank 1 (Left) Heated Oxygen Sensor (HO2S) Circuit (Lean Exhaust Indicated)
DTC 45 - Bank 1 (Left) Heated Oxygen.Sensor (HO2S) Circuit (Rich Exhaust Indicated)
DTC 46 - PASS-Key Circuit
DTC 47 - Knock Sensor (KS) Circuit or Module Missing
DTC 48 - Mass Air Flow (MAF) Sensor Circuit
DTC 50 - System Voltage Low
DTC 51 - EEPROM Programming Error
DTC 53 - System Voltage High
DTC 55 - Fuel Lean Monitor
DTC 58 - Transmission Fluid Temperature (TFT) Sensor Circuit Low (High Temp )
DTC 59 - Transmission Fluid Temperature (Low Temperature Indicated)
DTC 61 - A/C System Performance
DTC 63 - Bank 2 (Right) Heated Oxygen Sensor (HO2S) Circuit (Open Circuit)
DTC 64 - Bank 2 (Right) Heated Oxygen Sensor (HO2S) Circuit (Lean Exhaust Indicated)
DTC 65 - Bank 2 (Right) Heated Oxygen Sensor (HO2S) Circuit (Rich Exhaust Indicated)
DTC 66 - A/C Refrigerant Pressure Sensor Circuit (Open or Shorted)
DTC 67 - A/C Refrigerant Pressure Sensor Circuit (Pressure Sensor Activity)
DTC 68 - A/C Relay Circuit (Shorted Circuit)
DTC 69 - A/C Clutch Circuit
DTC 70 - A/C Clutch Relay Driver Circuit
DTC 71 - A/C Evaporator Temperature Sensor Circuit
DTC 72 - Vehicle Speed Sensor Loss
DTC 73 - Pressure Control Solenoid (PCS) Circuit (Current Error)
DTC 74 - Traction Control System(TCS)CircuitLow
DTC 75 - Transmission System Voltage Low
DTC 77 - Cooling Fan Relay Control Circuit
DTC 78 - Fan control PCM terminal A10
DTC 79 - Transmission Fluid Overtemp
DTC 80 - Transmission Component slipping
DTC 81 - Transmission 2- 3 Shift Solenoid Circuit
DTC 82 - Transmission 1-2 Shift Solenoid Circuit
DTC 83 - Reverse Inhibit System (Manual Transmission)
<<<<<<<<<select>>>>>>
DTC 83 - TCC/PWM (Auto Trans)
DTC 84 - Automatic Transmission 3-2 Control Solenoid Circuit
<<<select>>>>>>
DTC 84 - Skip Shift Solenoid Circuit (Manual Transmission Only)
DTC 85 - Transmission TCC Stuck "ON
DTC 90 - Transmission TCC Solenoid Circuit
DTC 91 - Skip Shift Lamp Circuit
DTC 97 - VSS Output Circuit
DTC 99 - Tach Output Circuit