95
TPS (tPS) Diagnostic Mode
EFI007
Display: % of TPS (0% closed, 95-100% WOT).
DTC: P0121, P0122, P0123
Usage: Verify TPS signal and adjust throttle cable.
MAP (bArO) Diagnostic Mode
EFI006
Display: MAP in millibars (958 millibar = 28.28 inches of
mercury).
DTC: P0107, P0108
Usage: Verify barometric pressure signal correct.
NOTE: Local barometric pressure is measured as
in/Hg (Inches of Mercury). 34 millibars are equal to 1
inch of mercury. Example: Gauge reading in the
BARO mode = 974 millibars, thus 974/34 = 28.65
in/Hg. Second example: Local barometer reading is
29.87 in/Hg, therefore 29.87 x 34 = 1015.58 millibars).
The gauge should be reading very close to 1015.
Inlet Air Temperature (AIr) Diagnostic
Mode
EFI005
Display: Inlet air temperature in Fahrenheit or Celsius.
DTC: P0112, P0113, P0114
Usage: Verify correct output of IAT sensor.
NOTE: After engine has been running, IAT read-
ings will be higher than outside air temperature due
to engine and engine compartment heat as well as
intake manifold heating.
Battery (bAtt) Diagnostic Mode
EFI004
Display: System DC voltage.
DTC: P0562, P0563, P2531, P2532
Usage: Verify system voltage under following conditions:
1. Battery voltage with engine and accessories off
(>12.2 VDC for fully charged).
2. Battery voltage with engine running (charging = 13.8
VDC or greater).
3. Battery voltage with electrical accessories operating,
engine idling (13.5 VDC or greater).
4. Battery voltage starter cranking (10.5-11.5 VDC).
DIAGNOSTIC TROUBLE CODES (DTC)
If an EFI or related chassis component fails or an
out-of-tolerance signal is detected by the ECM, a diag-
nostic trouble code (DTC) will be generated in the ECM
and displayed on the LCD gauge. The DTC will be dis-
played alternately with a wrench icon or malfunction
indicator light (MIL). The DTC will continue to flash
until the malfunction is corrected and the code cleared.
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