Exiting Data Parameter Series Mode

WARNING: This page is about a different car, the 1991 Cadillac Fleetwood and 1991 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.

To exit data parameter series at any time and return to ".7.0", complete the procedures for clearing PCM or BCM trouble codes. See CLEARING TROUBLE CODES under SELF-DIAGNOSTICS.

PCM DATA PARAMETERS

Display

Parameter

Range

P.0.1

TPS Opening

-9° to 90°

P.0.2

MAP

14-108 kPa

P.0.3

BARO

⁽¹⁾ 60-102 kPa

P.0.4

CTS

-40° to 151°C

P.0.5

MAT

40° to 151°C

P.0.6

Spark Advance

0-90 degrees

P.0.7

Battery Voltage

0-25.6 volts

P.0.8

Engine Speed

0-6370 RPM

P.0.9

Vehicle Speed

0-255 MPH

P.1.2

Inj. Pulse Width

0-99.6 mS

P.1.4

O2 Sensor Voltage

⁽²⁾ 0-.99 volts

P.1.6

O2 Cross Counts

⁽²⁾ 0-255

P.1.8

Integrator

⁽³⁾ 20-255

P.2.0

Block Learn

⁽⁴⁾ 0-255

P.2.1

Cruise Feedback

⁽⁵⁾ 0-99

P.2.2

PRNDL Sw. Status

⁽⁶⁾ 0-1

P.2.3

PRNDL Sw. Status

⁽⁶⁾ 0-1

P.2.4

Ignition Cycles

1-50

P.2.5

PROM ID Code

⁽⁷⁾

⁽¹⁾	The BARO reading is taken with key on and is corrected at wide open throttle.

⁽²⁾	Measured in cross counts which are the number of times the voltage crosses the reference voltage of .45 volts.

⁽³⁾

Normal count position for integrator is "128", indicating engine is operating normally. A count greater than 128 indicates time is being added to the injector pulse width, adding more fuel to the engine. A count less than 128 indicates time is being subtracted from the injector pulse width, reducing the amount of fuel to the engine.

⁽⁴⁾

Normal count position is "128" and indicates engine is operating normally. The block learn value is based on integrator learned values. Readings greater than 128 indicate time is being added to the injector pulse width. Readings less than 128 indicate time is being subtracted from the injector pulse width.

⁽⁵⁾	"0" equals full extend and "99" equals full retract.

⁽⁶⁾	"0" indicates that the switch is closed and "1" indicates that the switch is open.

⁽⁷⁾	Display shows a 3 digit code identifying the PROM.