
-102-
-102-
Operation Section
Operation Section
Table
Table 2.
2. Diagnostic
Diagnostic Fault
Fault Codes (Fla
Codes (Flash C
sh Codes)
odes) cont’d.
cont’d.
DFC
DFC
PROBABLE
PROBABLE FAULT
FAULT
FAULT
FAULT ACTION
ACTION *
*
CORRECTIVE
CORRECTIVE ACTION
ACTION FIRST
FIRST CHECK
CHECK
272
272
TPS2AdaptHiMin
TPS2AdaptHiMin
Learned WOT end of TPS2
Learned WOT end of TPS2
sensor range lower than
sensor range lower than
expected
expected
None
N/A
None
N/A
281
281
TPS1AdaptLoMax
TPS1AdaptLoMax
Learned closed throttle end
Learned closed throttle end
of TPS1 sensor range higher
of TPS1 sensor range higher
than expected
than expected
None
N/A
None
N/A
282
282
TPS2AdaptLoMax
TPS2AdaptLoMax
Learned closed throttle end of
Learned closed throttle end of
TPS2 sensor range higher
TPS2 sensor range higher
than expected
than expected
None
N/A
None
N/A
291
291
TPS_Sensors_Conflict
TPS_Sensors_Conflict
TPS sensors differ by more
TPS sensors differ by more
than expected amount
than expected amount
NOTE:
NOTE:
The
The TPS
TPS is
is not
not a
a
s
s erv
erv ic
iceabl
eable
e item a
item and
nd ccan
an
onl
only be
y be repaired by
repaired by
repl
replacing
acing the
the D
DV-E
V-E V throttl
V throttle
e
assembly.
assembly.
(1) TurnOnMil
(1) TurnOnMil
(2) CutThrottle
(2) CutThrottle
Check the throttle connector and pins for
Check the throttle connector and pins for
corrosion.
corrosion.
To check the TPS disconnect the throttle
To check the TPS disconnect the throttle
connector and measure the resistance
connector and measure the resistance
from:
from:
TPS Pin 2 (GND) to Pin 6 (TPS1 SIGNAL)
TPS Pin 2 (GND) to Pin 6 (TPS1 SIGNAL)
(0.7
(0.7
Ω
Ω
± 30%)
± 30%)
TPS Pin 3 (PWR) to Pin 6 (TPS1 SIGNAL)
TPS Pin 3 (PWR) to Pin 6 (TPS1 SIGNAL)
(1.4
(1.4
Ω
Ω
± 30%)
± 30%)
331
331
(33)
(33)
MAPTimeRangeLow
MAPTimeRangeLow
Manifold Absolute Pressure
Manifold Absolute Pressure
sensor input is low, normally
sensor input is low, normally
set if the TMAP pressure
set if the TMAP pressure
signal wire has been
signal wire has been
disconnecte
disconnected or
d or shorted to
shorted to
ground or the circuit has
ground or the circuit has
opened to the SECM
opened to the SECM
TurnOnMil
TurnOnMil
Check TMAP connector and MAP signal
Check TMAP connector and MAP signal
wiring for an open circuit
wiring for an open circuit
TMAP Pin 4 to
TMAP Pin 4 to SECM Pin B18 (signal)
SECM Pin B18 (signal)
TMAP Pin 1 to SECM Pin B1 (sensor GND)
TMAP Pin 1 to SECM Pin B1 (sensor GND)
TMAP Pin 3 to
TMAP Pin 3 to SECM Pin B24 (XDRP +5
SECM Pin B24 (XDRP +5
Vdc)
Vdc)
Check the MAP sensor by di
Check the MAP sensor by disconnecting
sconnecting
the TMAP connector and measuring at the
the TMAP connector and measuring at the
sensor:
sensor:
TMAP Pin 1(GND) to
TMAP Pin 1(GND) to
Pin 4 (pressure signal KPA) (2.4k
Pin 4 (pressure signal KPA) (2.4k
Ω
Ω
- 8.2k
- 8.2k
Ω
Ω
))
TMAP Pin 3 (power) to
TMAP Pin 3 (power) to
Pin 4 (pressure signal KPA) (3.4k
Pin 4 (pressure signal KPA) (3.4k
Ω
Ω
- 8.2k
- 8.2k
Ω
Ω
))
332
332
MAPRangeLow
MAPRangeLow
Manifold Absolute Pressure
Manifold Absolute Pressure
sensor input is low, normally
sensor input is low, normally
set if the TMAP pressure
set if the TMAP pressure
signal wire has been
signal wire has been
disconnecte
disconnected or
d or shorted to
shorted to
ground or the circuit has
ground or the circuit has
opened to the SECM
opened to the SECM
(1) TurnOnMil
(1) TurnOnMil
(2) EngineShutdown
(2) EngineShutdown
Check TMAP connector and MAP signal
Check TMAP connector and MAP signal
wiring for an open circuit
wiring for an open circuit
TMAP Pin 4 to
TMAP Pin 4 to SECM Pin B18 (signal)
SECM Pin B18 (signal)
TMAP Pin 1 to SECM Pin B1 (sensor GND)
TMAP Pin 1 to SECM Pin B1 (sensor GND)
TMAP Pin 3 to
TMAP Pin 3 to SECM Pin B24 (XDRP +5
SECM Pin B24 (XDRP +5
Vdc)
Vdc)
Check the MAP sensor by di
Check the MAP sensor by disconnect-ing
sconnect-ing
the TMAP connector and measuring at the
the TMAP connector and measuring at the
sensor:
sensor:
TMAP Pin 1(GND) to
TMAP Pin 1(GND) to
Pin 4 (pressure signal KPA) (2.4k
Pin 4 (pressure signal KPA) (2.4k
Ω
Ω
- 8.2k
- 8.2k
Ω
Ω
))
TMAP Pin 3 (power) to
TMAP Pin 3 (power) to
Pin 4 (pressure signal KPA) (3.4k
Pin 4 (pressure signal KPA) (3.4k
Ω
Ω
- 8.2k
- 8.2k
Ω
Ω
))
(*) Fault actions shown are default values specified by the OEM.
(*) Fault actions shown are default values specified by the OEM.
Summary of Contents for G20E-5
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