Retrieving codes – Equus 3145 - Digital Ford Code Reader (1981 - 1995) User Manual
Page 65
Retrieving Codes
FAULT CODE DEFINITIONS FOR EEC-IV SYSTEMS (536 - 568)
Chapter 4
62
TEST
CODE
CONDITION
FAULT CODE DEFINITION
536
R, C
Brake On/Off (BOO) circuit not activated
during KOER
538
R
Insufficient RPM change during KOER
Dynamic Response Test/
538
R
(Trucks ONLY): invalid cylinder balance
test due to throttle movement during test
539
O
A/C on/Defrost on during KOEO
542
O, C
Fuel pump secondary circuit fault
543
O, C
Fuel pump secondary circuit fault
551
O
Idle Air Control solenoid circuit fault
552
O
Thermactor air bypass solenoid circuit fault
552
*
Air management circuit 1 failure
553
O
Thermactor air diverter solenoid circuit
fault
553
*
Air management circuit 2 failure
554
O
(Cars ONLY): Fuel Pressure Regulator
Control (FPRC) circuit failure
554
*
Fuel pressure regulator control circuit
failure
555
*
Supercharger bypass solenoid circuit
failure
556
O, C
Fuel pump relay primary circuit fault
557
O, C
Fuel pump primary circuit failure
558
O
EGR valve regulator solenoid circuit fault
559
O
(Cars ONLY): Air conditioning ON relay
circuit failure
562
*
Auxiliary electric fan circuit failure
563
O
(Cars ONLY): High Speed Electro Drive
Fan circuit fault
564
O
(Cars ONLY): Electro Drive Fan circuit
fault
565
O
Canister purge solenoid circuit fault
566
O
3-4 shift solenoid circuit failure
567
*
Speed control vent circuit failure
568
*
Speed control vacuum circuit failure
4