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Eldor power unit fault codes (with TEXA diagnostic software)
IDN
Component/Function
ATI
[DTC Code]
Fan 1 relay command diagnosis
32
P0480
[0480 hex]
Fan 2 relay command diagnosis
5
P0481
[0481 hex]
Vehicle speed sensor 1 diagnosis
79
P0500
[0500 hex]
Vehicle speed sensor 2 diagnosis
P0501
49
[0501 hex]
Battery voltage diagnosis
7
P0560
[0560 hex]
Voltage regulator diagnosis
76
P0561
[0561 hex]
Checksum EPROM diagnosis
70
P0601
[0601 hex]
RAM diagnosis
72
P0604
[0604 hex]
ROM diagnosis
69
P0605
[0605 hex]
IDN ATI: Diagnosis fault number - PO: Power On - Ck: Cranking - Er: Engine Run - Vr: Vehicle Run
Air intake injection system
[Fault
Takeover
Symptom]
Over
maximum
Ck, Er, Vr
Threshold
[0001]
Under
minimum
Ck, Er, Vr
Threshold
[0010]
Over
maximum
Ck, Er, Vr
Threshold
[0001]
Under
minimum
Ck, Er, Vr
Threshold
[0010]
Plausibility
PO, Ck, Er, Vr
[1000]
Plausibility
PO, Ck, Er, Vr
[1000]
Plausibility
PO, Ck, Er, Vr
[1000]
Plausibility
Ck, Er, Vr
[1000]
Under
minimum
Ck, Er, Vr
Threshold
[0010]
Plausibility
PO, Ck, Er, Vr
[1000]
Plausibility
PO, Ck, Er, Vr
[1000]
Plausibility
PO, Ck, Er, Vr
[1000]
- 19 -
Cause
Fault detection rules
Short circuit to
CONDITION FOR DETECTION: If Rpm >0 and
Supply volta-
THINFVBATDDIAG< Vbattery < HSUPVBATDDIAG
ge or Vehicle
DETECTION: Is recognized a fault through the
supply
hardware component signal feedback check
CONDITION FOR DETECTION: If Rpm >0 and
Open Circuit
THINFVBATDDIAG< Vbattery < HSUPVBATDDIAG
or Short
DETECTION: It is recognized a fault through the
Circuit to
hardware component signal feedback check
Ground
Short circuit to
CONDITION FOR DETECTION: If Rpm >0 and
Supply volta-
THINFVBATDDIAG< Vbattery < HSUPVBATDDIAG
ge or Vehicle
DETECTION: It is recognized a fault through the
supply
hardware component signal feedback check
CONDITION FOR DETECTION: If Rpm >0 and
Open Circuit
THINFVBATDDIAG< Vbattery < HSUPVBATDDIAG
or Short
DETECTION: It is recognized a fault through the
Circuit to
hardware component signal feedback check
Ground
CONDITION FOR DETECTION: Always
DETECTION: It is recognized a fault if
Signal is not
Rpm>THRPMVS & CmeDriver>THTORQUEVS for
plausible or
a time equal to NSAMPOBSVS with
not coherent
VehicleSpeed==0; if |VehSpeed-VehSpeedOld |>
DELTAMAXSPEED for NSAMPOBVS/INCV-
SCNDWRONG
CONDITION FOR DETECTION: Always
DETECTION: It is recognized a fault if
Signal is not
Rpm>THRPMVS & CmeDriver>THTORQUEVS for
plausible or
a time equal to NSAMPOBSVS with
not coherent
VehicleSpeed==0; if |VehSpeed-VehSpeedOld |>
DELTAMAXSPEED for NSAMPOBVS/INCV-
SCNDWRONG
CONDITION FOR DETECTION: Always
ECU supply
DETECTION: It is recognized a fault if VBatteryIn <
anomaly
VBATINMIN
CONDITION FOR DETECTION: If Rpm > THRPM-
ECU supply
DIAGBAT & CntAbsTdc>THTDCDIAGVREG
anomaly
DETECTION: It is recognized a fault if VBattery >
VBATMAX
CONDITION FOR DETECTION: If Rpm > THRPM-
ECU supply
DIAGBAT& CntAbsTdc>THTDCDIAGVREG
anomaly
DETECTION: It is recognized a fault if VBattery <
VBATMIN
CONDITION FOR DETECTION: In power on con-
dition
System error
DETECTION: It is recognized a fault if there is a
bad transfer data from RAM to EPROM
CONDITION FOR DETECTION: In power on con-
dition
System error
DETECTION: It is recognized a fault if there is no
match between data read and write
CONDITION FOR DETECTION: In power off con-
dition
System error
DETECTION: It is recognized a fault if there is no
checksum verification
D
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