Retrieving codes – Equus 3145 - Digital Ford Code Reader (1981 - 1995) User Manual
Page 50
Retrieving Codes
FAULT CODE DEFINITIONS FOR EEC-IV SYSTEMS (15 - 24)
47
Chapter 4
TEST
CODE
CONDITION
FAULT CODE DEFINITION
15
C
Power Interruption to computer memory or
EEC (PCM) Keep Alive Memory (KAM) test
failed
15
O
Read Only Memory test failed
16
O
(Cars ONLY): Signal from Ignition
Diagnostic Monitor (IDM) not received
16
R
RPM too low to perform HEGO (HO2S) test
16
R
Idle RPM high with ISC retracted
16
R
RPM above self test limit with ISC off
17
R
(Cars ONLY): RPM below self-test limit
17
R
Idle RPM low with ISC retracted
17
R
Idle RPM high with ISC retracted
18
R
SPOUT circuit open or Spark Angle Word
(SAW) circuit failure
18
C
Loss of tachometer input/IDM circuit
failure / SPOUT circuit grounded
19
O
Failure in EEC (PCM) internal voltage
19
R
(Cars ONLY): Erratic RPM signal at idle /
too low
19
C
(Cars ONLY): Cylinder Identification (CID)
sensor failure
19
O
Power processor check
21
O, R
Cooling Temperature sensor out of specified
range or ECT out of range
22
O, R, C
Manifold Absolute Pressure (MAP) or
BARO sensor out of range
23
O, R, C
(Cars ONLY): Throttle Position (TP) sensor
signal out of range
23
O, R
(Trucks ONLY): Throttle Position (TP)
sensor signal out of range
23
O, R
Fuel injector pump lever sensor input is out
of self test range (Diesel)
24
O, R
Intake Air Charge Temperature (ACT, IAT)
sensor or Vane Air Temperature (VAT)
sensor out of range
24
C
Coil #1 primary circuit failure
4