GEM Active Command Index
GEM Active Command Index
Symptom Chart — Electronic Shift on the Fly (ESOF)
PARK_SW Headlamp Control Input Switch
ON, OFF
PLATE_A
Transfer Case Contact Plate Switch A
OPEN, CLOSED
PLATE_B
Transfer Case Contact Plate Switch B
OPEN, CLOSED
PLATE_C
Transfer Case Contact Plate Switch C
OPEN, CLOSED
PLATE_D
Transfer Case Contact Plate Switch D
OPEN, CLOSED
PLATEPW Contact Plate Ground Output
ON, OFF
SBLTMP
Safety Belt Warning Indicator
ON---, OFF---, ON-B-, OFFO-G
SPEEDWP Speed Dependent Wiper Function
ACTIVE, notACT
VBATGEM Battery
0.1 Volt DC per count
VSS_GEM Vehicle Speed Sensor
0-255 KPH
WASHRLY Washer Pump Relay Circuit
ON---, OFF---, ON-B-, OFFO-G
WASH_SW Washer Relay Output
ON---, OFF---, ON-B-, OFFO-G
WPHISP
Wiper HI/LO Relay Status
ON---, OFF---, ON-B-, OFFO-G
WPMODE Wiper/Washer Switch Status
WASH, OPEN, INVLD, OFF, INTVL 1-7, LOW, HIGH
WPPK_PK Wiper Park to Park Time
0 to 65 ms
WPPRKSW Wiper Motor Switch Status
PARKED, notPRK
WPRUN
Wiper Run/Park Relay Status
ON---, OFF---, ON-B-, OFFO-G
2WDSOL
2WD Solenoid Status
ON---, OFF---, ON-B-, OFFO-G
4WDCLST Four Wheel Drive Clutch Relay Control
ON---, OFF---, ON-B-, OFFO-G
4WDHIGH 4WD High Indicator Status
ON---, OFF---, ON-B-, OFFO-G
4WDLOW
4WD Low Indicator Status
ON---, OFF---, ON-B-, OFFO-G
4WDSGEM 4WD Mode
INVLD, 2WD, 4WDLOW, 4WDHIGH, OFFO-G
4WDSOL
4WD Solenoid Status
ON---, OFF---, ON-B-, OFFO-G
Active Command
Display
Action
PID LATCH
PID LATCH
ON, OFF
WINDSHIELD WIPER
WIPER RLY
ON, OFF
WINDSHIELD WIPER
SPEED RLY
ON, OFF
WINDSHIELD WIPER
WASH RLY
ON, OFF
WARNING LAMPS AND CHIME
SBLT LAMP
ON, OFF
WARNING LAMPS AND CHIME
CHIME
ON, OFF
WINDSHIELD WIPER
AJAR LAMP
ON, OFF
BATTERY SAVER
BATT SAVR
ON, OFF
INTERIOR COURTESY LAMPS
INT LAMPS
ON, OFF
ONE TOUCH DOWN AND ACCESSORY DELAY ACCY RLY
ON, OFF
ONE TOUCH DOWN AND ACCESSORY DELAY ONE TOUCH ON, OFF
4-WHEEL ELECTRONIC SHIFT
CW/CCW
ON, OFF
4-WHEEL ELECTRONIC SHIFT
HIGH LAMP
ON, OFF
4-WHEEL ELECTRONIC SHIFT
LOW LAMP
ON, OFF
4-WHEEL ELECTRONIC SHIFT
AXLE ENGG ON, OFF
4-WHEEL ELECTRONIC SHIFT
AXLE DSCN ON, OFF
4-WHEEL ELECTRONIC SHIFT
PLATE PWR ON, OFF
4-WHEEL ELECTRONIC SHIFT
SHFT CLCH
ON, OFF
Symptom Chart
Condition
Possible Sources
Action
The Vehicle Does Not Shift Between 2WD and 4WD Modes Properly
4 WD mode switch.
Transfer case shift relays.
Contact plate A, B, C, or D.
Transfer case shift motor.
Circuitry.
Transfer case mechanism.
GO to
Pinpoint
Test A
.
The Vehicle Does Not Shift Between 4WD High and 4WD Low Modes Properly
4WD mode switch.
Neutral safety switch.
Brake pedal position (BPP)
switch.
GO to
Pinpoint
Test B
.
Page 5 of 74
1998 F-150/250 Workshop Manual
1/11/2011
http://www.fordtechservice.dealerconnection.com/pubs/con...
