GEM Parameter Identification (PID) Index
GEM Parameter Identification (PID) Index
P1810 4-Wheel Drive LO Indicator Short to Power GEM GO to Pinpoint Test C.
P1812 4-Wheel Drive Mode Select Switch Open or Short to Power GEM GO to Symptom Chart.
P1815 4-Wheel Drive Mode Select Switch Circuit Short to Ground GEM GO to Symptom Chart.
P1819 Neutral Safety Switch Input Short to Ground GEM GO to Pinpoint Test B.
P1820 Transfer Case LO to HI Shift Relay Coil Open or Short to
Ground
GEM GO to Pinpoint Test A.
P1822 Transfer Case LO to HI Shift Relay Coil Short to Power GEM GO to Pinpoint Test A.
P1824 4-Wheel Drive Electric Clutch Relay Open or Short to
Ground
GEM GO to Pinpoint Test E.
P1826 4-Wheel Drive Electric Clutch Relay Short to Power GEM GO to Pinpoint Test E.
P1828 Transfer Case HI to LO Shift Relay Open or Short to
Ground
GEM GO to Pinpoint Test A.
P1830 Transfer Case HI to LO Shift Relay Short to Power GEM GO to Pinpoint Test A.
P1832 Front Axle 4-Wheel Drive Solenoid Open or Short to
Ground
GEM GO to Pinpoint Test C.
P1834 Front Axle 4-Wheel Drive Solenoid Short to Power GEM GO to Pinpoint Test C.
P1838 Transfer Case Shift Motor Fails to Move (Energized Relays,
Motor Does Not Move)
GEM REFER to Section 308-07A.
P1846 Transfer Case Contact Plate A Open Circuit GEM GO to Symptom Chart.
P1850 Transfer Case Contact Plate B Open Circuit GEM GO to Symptom Chart.
P1854 Transfer Case Contact Plate C Open Circuit GEM GO to Symptom Chart.
P1858 Transfer Case Contact Plate D Open Circuit GEM GO to Symptom Chart.
P1866 Transfer Case System Concern, Contact Plate Failure GEM GO to Symptom Chart.
P1867 Transfer Case Contact Plate Open or Short to Ground GEM GO to Symptom Chart.
P1876 Transfer Case 2-Wheel Drive Solenoid Open or Short to
Ground
GEM GO to Pinpoint Test C.
P1877 Transfer Case 2-Wheel Drive Solenoid Short to Power GEM GO to Pinpoint Test C.
P1891 Transfer Case Contact Plate Ground Return Open Circuit GEM GO to Symptom Chart.
PID Description Expected Values
ACCDLY Accessory Delay Relay Coil Circuit ON---, OFF---, ON-B-, OFFO-G
AXL_DIS 4WD Center Axle Disconnect ON---, OFF---, ON-B-, OFFO-G
AXLSTAT 4WD Center Axle Disconnect ON, OFF
BATSAV Battery Saver Relay Circuit ON---, OFF---, ON-B-, OFFO-G
BOO_GEM Brake Pedal Position (BPP) Switch Input ACTIVE, notACT
CLTCHSW Clutch Pedal Position (CPP) Switch ACTIVE, notACT
D_DN_
SW
Window Regulator Control Down Switch State OFF, DOWN
D_UP_
SW
Window Regulator Control Up Switch State OFF, UP
D_PWRLY One Touch Down Relay Coil Circuit Status OFF, ON
D_
PWAMP
Window Regulator Electric Drive Motor Current 0.25 amp increments
D_PWPK Window Regulator Electric Drive Current 0.25 amp increments
DRAJAR_L Door Ajar Indicator Circuit ON---, OFF---, ON-B-, OFFO-G
D_DR_SW LH Door Open Warning Lamp Switch CLOSED, AJAR
D_SBELT LH Safety Belt IN, OUT
HALLPWR Hall Effect Speed Sensor Power ON---, OFF---, ON-B-, OFFO-G
ILLE_SW Illuminated Entry Input (From RAP Module) ON, OFF
IGN_GEM Ignition Switch States START, RUN, OFF, ACCY
IGN_KEY Ignition Key-In/Out IN, OUT
INTLMP Interior Lamp Relay Circuit ON---, OFF---, ON-B-, ONO-G
MTR_CCW HI to LO Shift Relay Coil Status ON---, OFF---, ON-B-, OFFO-G
MTR_CW LO to HI Shift Relay Coil Status ON---, OFF---, ON-B-, OFFO-G
NTRL_SW Transmission Range Sensor Input NTRL, notNTRL
OTD_SW One Touch Down Switch State OFF, DOWN
P_DR_SW RH Door Open Warning Lamp Switch CLOSED, AJAR
Page 4 of 741998 F-150/250 Workshop Manual
1/11/2011http://www.fordtechservice.dealerconnection.com/pubs/con...
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