Toronado V6-3800 3.8L (1988)
NOTE: Operating the vehicle in the "Diagnostic Mode" for extended time periods without the engine running or without a battery charger will cause the
battery to run down and possibly relate false diagnostic information, or cause a no start condition. To ensure proper operation, attach a battery charger on
"Trickle" charge if vehicle is to be operated in "Diagnostic Mode" without engine running for periods, longer than 1/2 hour.
After "Diagnostic Mode" is entered any "Trouble Codes" stored in computer memory will be displayed. ECM codes will be displayed first. If no ECM
trouble codes are stored, the IPC will display a "NO ECM CODES" message for approximately two seconds. All ECM codes will be prefixed with an
"E" (i.e.), E013, E014, etc.). For the ECM code assignments, go to ECM TROUBLE CODE CHARTS. The lowest numbered ECM code will be
displayed first followed by progressively higher numbered codes present. Codes will be displayed consecutively for two second intervals until the highest
code present has been displayed. When all ECM codes have been displayed, BCM codes will be displayed.
The lowest numbered BCM code will be displayed for approximately two seconds. BCM codes accompanied by "Current" indicates the fault still exists.
Since the ECM is not capable of making this determination this message does not appear when ECM codes are being displayed. All BCM codes will be
prefixed with a "B" (i.e. B110, B111, etc.). For the BCM code assignments, go to BCM TROUBLE CODE CHARTS. Progressively higher numbered
BCM codes, if present, will be displayed consecutively for two second intervals until the highest code present has been displayed. If no BCM Trouble
Codes are stored "NO BCM CODES" message will be displayed. At any time during the display of ECM or BCM codes, if the "LO" fan button on the
ECC is pressed, the display of codes will be bypassed. At any time during the display of trouble codes, if the "BI-LEV" button is pressed the BCM will
exit "Diagnostic Mode" and go back to normal vehicle operation.
Data Parameters
BCM DATA DISPLAYS:
While in this mode, the display will show eighteen data messages and the data value of each. This information will assist in tracking down emission or
driveability problems, since the displays can be viewed while the vehicle is being driven.
Data displays are operated as follows:
1.
Pressing the "OFF" button will stop the test selection process and return the display to the next available test type for the selected system.
2.
Pressing the "LO" fan button will display the next smaller test number for the selected test type. If this button is touched with the lowest test
number displayed, the highest test number will then appear.
3.
Pressing the "HI" fan button will display the next larger test number for the selected test type. If this pad is touched with the highest test number
displayed, the lowest test number will then appear.
BD20
The commanded blower voltage "BLWR VOLTS" is displayed in volts from 0 to system voltage.
BD21
The Engine Coolant Temperature "COOLANT TP" is displayed in degrees (C) from -40° to 151°. This value is sent from the ECM to the
BCM. If this circuit malfunctions as determined by the ECM, the ECM will send the BCM a "Failsoft" value for display.
BD22
The commanded air mix valve (door) "COM MIX DR" position is displayed in percent (%). A value close to 0% represents a cold air mix and
a value close to 100% represents a warm air mix.
BD23
The actual air mix valve (door) "ACT MIX DR" position is displayed in percent (%). This value should follow the commanded air mix door
position (BD22) except when the door is commanded beyond its mechanical limits of travel.
BD24
The "AIR MODE" is displayed as a number from 0 to 11. Each number is a code which represents the following air delivery modes:
0 = Auto - Recirculate Upper
1 = Auto - Outside Upper
2 = Auto - Bi-Level
3 = Auto - Heater-Defog
4 = Auto - Lower
5 = OFF
6 = Normal Purge
7 = Cold (DEF) Purge
8 = Defog
9 = Forced Lower
10 = Forced Upper
11 = Forced Bi-Level
BD25
The in-car temperature "IN CAR TP" is displayed in degrees (°C), from -40° to 102°.
BD26
The actual outside temperature "OUTSIDE TP" is displayed in degrees (°C), from -40° to 93°. This valve represents actual sensor temperature
and is not restricted by the features used to minimize engine heat affects on the customer display value.
