Diagnostic Parameters & Displays
ACP DIAGNOSTIC PARAMETERSACP DATA PARAMETERS:
AD20 The COMMANDED BLOWER SPEED is read from 0% to 99%.
AD21 The COOLANT TEMPERATURE is displayed in degrees Celsius (°C) from -40 to 151. This value is sent from the PCM. If the coolant temperature sensor circuit malfunctions Code E014 or E015 will set and the PCM will send a "Fail-safe" value for display. The PCM parameter for actual coolant temperature is ED04.
AD22 The COMMANDED AIR MIX DOOR POSITION is displayed in percent (%). A value close to 100% represents a max cold air mix and a value close to 0% represents a max heat air mix.
AD23 The ACTUAL AIR MIX DOOR POSITION is displayed in percent (%). This value should nearly equal the commanded air mix door position (AD22) when AD22 is between 0 and 70.
AD24 The AIR DELIVERY MODE is displayed as a number from 0 to 10. Each number is a code which represents the following air delivery modes:
0 - MAX A/C (Recirc)
1 - A/C
2 - Bi-Level (A/C-Heater)
3 - Heater-Defrost
4 - Heater
5 - OFF
6 - Defog
7 - Front Defrost
8 - Normal Purge
9 - Cold Purge
10 - A/C Purge
AD25 The IN-CAR TEMPERATURE is displayed in degrees Celsius (°C), from -40 to 102.
AD26 The ACTUAL OUTSIDE TEMPERATURE is displayed in degrees Celsius (°C), from -40 to 53. This value represents actual sensor temperature
and is not restricted by filters used to minimize engine heat affects on the IPC display value.
AD27 The HI SIDE / CONDENSER OUTLET TEMPERATURE is displayed in degrees Celsius (°C) from -38 to 185.
AD28 The LO SIDE / EVAPORATOR INLET TEMPERATURE is displayed in degrees Celsius (°C) from -40 to 102.
AD32 The SUNLOAD SENSOR is displayed in in percent (%) from 0 to 100%. 0 represents max bright, while 100 represents max dark.
AD33 AD33 is not used on this vehicle. Readings will be near -40 at all times.
AD70 The REAR BLOWER FEEDBACK is displayed in voltage.
AD71 The INTEGRAL CONTROL TERM is displayed in counts. This term is used to compensate for in-car temperature sensor leading/lagging actual temperature.
AD98 The IGNITION CYCLE value is the number of times that the Air Conditioning Programmer (ACP) has been turned 'OFF' since an ACP trouble code was last detected. After 50 ignition cycles without any malfunction being detected, this value is reset.
AD99 ACP SOFTWARE ID is used to identify what software is currently used in the ACP
ACP INPUT PARAMETERS:
AI01 The LOW REFRIGERANT PRESSURE SWITCH display is 'LO' when the system is low on refrigerant.
AI02 The WIPERS ON display is 'HI' when the wiper switch is in any on position.
AI03 HIGH REFRIGERANT PRESSURE SWITCH is normally displayed as "HI" and will switch to "LO" if refrigerant system pressure exceeds 420 psi.
ACP OUTPUT OVERRIDE PARAMETERS:
AS00 This test will blank the display as no overrides are active at this point
AS01 The PROGRAM NUMBER override can be controlled from '0' (Max A/C) to '99' (Max heat). The display will hold the override value upon release of the buttons.
AS12 The AIR MIX DOOR POSITION override can be controlled from 0 (max heat) to 99 (max cool). The display will hold the override value upon release of the buttons.
AS13 The AIR DELIVERY MODE override can be controlled from 0 to 10, to vary air delivery mode. Refer to AD24 for mode table.
AS16 The BLOWER SPEED CONTROL override can be controlled from 0 to 100%.
AS19 The OUTSIDE TEMP UPDATE override can be used to immediately update the displayed outside temperature reading to the actual outside temperature reading, bypassing all filters. To update, press "WARMER." Display will go to "89", then ACP will use current outside air temperature reading.
AS20 The SOLENOID CYCLING override will cause the ACP to cycle controlled solenoids ON/OFF.
INDICATOR SOLENOID
Auto Recirc
DeFog Air Down
Hi Air Up
Lo Def-A/C
When actuators are cycling, pressing "COOL" will "freeze" actuators in current state (display reads 00). Pressing "WARM" will start actuators cycling again (display reads 99).