4
FAULT CODE DEFINITIONS FOR EEC-IV SYSTEMS (632 - 655)
TEST
CODE
CONDITION
632
R
633
O
634
C
636
O, R
637
O, C
638
O, C
639
R, C
641
O
643
O, C
645
C
646
C
647
C
648
C
649
C
651
C
652
O
652
C
654
O
655
C
Chapter 4
FAULT CODE DEFINITION
Overdrive Transmission Cancel Switch/ no
action during self engine run test
4 x 4 switch is closed
Manual Lever Position sensor voltage
higher or lower than expected or A/C on
Transmission Oil Temperature higher or
lower than expected
Transmission Oil Temperature circuit
above maximum voltage
Transmission Oil Temperature circuit
below minimum voltage
Insufficient input from transmission speed
sensor
(Cars ONLY): Shift Solenoid #3 circuit
fault
(Cars ONLY): Converter Clutch Control
(CCC) circuit failure
(Cars ONLY): Incorrect gear ratio-first
gear
(Cars ONLY): Incorrect gear ratio-second
gear
(Cars ONLY): Incorrect gear ratio-third
gear
(Cars ONLY): Incorrect gear ratio-fourth
gear
(Cars ONLY): Electronic Pressure Control
Circuit solenoid higher or lower than
expected
(Cars ONLY): Electronic Pressure Control
circuit solenoid failure
(Cars ONLY): Modulated Lock-Up Torque
Converter Clutch Solenoid circuit fault
Transmission over temp condition
Not in "park" during KOEO Self-test
(Trucks ONLY): Manual Lever Position
(MLP) sensor indicating not in NEUTRAL
during Self-Test
Retrieving Codes
64