Ford F150 Pickup. Manual — part 1953
B1840
Wiper Front Power Circuit Failure
GEM/CTM
REFER to WIPERS AND WASHERS
- F150 .
P0500
Vehicle Speed Sensor Malfunction
GEM
REFER to TRANSFER CASE -
ESOF .
P1804
Transmission 4-Wheel Drive High
Indicator Circuit Failure
GEM
GO to PINPOINT TEST J .
P1806
Transmission 4-Wheel Drive High
Indicator Short Circuit to Battery
GEM
GO to PINPOINT TEST J .
P1812 Transmission 4-Wheel Drive Mode Select
Circuit Failure
GEM
REFER to TRANSFER CASE -
ESOF .
P1815 Transmission 4-Wheel Drive Mode Select
Short Circuit to Ground
GEM
REFER to TRANSFER CASE -
ESOF .
P1820
Transmission Transfer Case Clockwise
Shift Relay Coil Circuit Failure
GEM
REFER to TRANSFER CASE -
ESOF .
P1822
Transmission Transfer Case Clockwise
Shift Relay Coil Short Circuit to Battery
GEM
REFER to TRANSFER CASE -
ESOF .
P1824 Transmission 4-Wheel Drive Clutch Relay
Circuit Failure
GEM
GO to PINPOINT TEST G .
P1826 Transmission 4-Wheel Drive Low Clutch
Relay Short Circuit to Battery
GEM
GO to PINPOINT TEST G .
P1828
Transmission Transfer Case Counter
Clockwise Shift Relay Coil Circuit Failure
GEM
REFER to TRANSFER CASE -
ESOF .
P1830
Transmission Transfer Case Counter
Clockwise Shift Relay Coil Short Circuit
to Battery
GEM
REFER to TRANSFER CASE -
ESOF .
P1832
Transmission Transfer Case Differential
Lock-Up Solenoid Circuit Failure
GEM
GO to PINPOINT TEST H .
P1834
Transmission Transfer Case Differential
Lock-Up Solenoid Short Circuit to Battery
GEM
GO to PINPOINT TEST H .
P1838
Transmission Transfer Case Shift Motor
Circuit Failure
GEM
REFER to TRANSFER CASE -
ESOF .
P1846 Transmission Transfer Case Contact Plate
'A' Circuit Failure
GEM
REFER to TRANSFER CASE -
ESOF .
P1850 Transmission Transfer Case Contact Plate
'B' Circuit Failure
GEM
REFER to TRANSFER CASE -
ESOF .
P1854 Transmission Transfer Case Contact Plate
'C' Circuit Failure
GEM
REFER to TRANSFER CASE -
ESOF .
P1858 Transmission Transfer Case Contact Plate
'D' Circuit Failure
GEM
REFER to TRANSFER CASE -
ESOF .
P1866
Transmission Transfer Case System
Concern - Servicing Required
GEM
REFER to TRANSFER CASE -
ESOF .
P1867 Transmission Transfer Case Contact Plate
General Circuit Failure
GEM
REFER to TRANSFER CASE -
ESOF .
P1876
Transmission Transfer Case 2-Wheel
GEM
GO to PINPOINT TEST H .
2003 Ford Pickup F150
2003 TRANSMISSIONS Transfer Case - General Information - F150 Pickup
SYMPTOM CHART
SYMPTOM CHART
PINPOINT TESTS
Pinpoint Test G: 4X4 High Does Not Engage At Speed Correctly (Driveline Does Not Synchronize Correctly) But Does
Engage At Rest
Drive Solenoid Circuit Failure
P1877
Transmission Transfer Case 2-Wheel
Drive Solenoid Circuit Short to Battery
GEM
GO to PINPOINT TEST H .
P1891 Transmission Transfer Case Contact Plate
Ground Return Open Circuit
GEM
REFER to TRANSFER CASE -
ESOF .
Condition
Possible Sources
Action
The 4x4 HIGH does not engage at speed correctly
(driveline does not synchronize correctly) but does
engage at rest
z
MSOF switch.
z
MSOF electric
clutch relay.
z
MSOF transfer case
electric clutch.
z
Circuitry.
z
MSOF transfer case
clutch armature.
z
GEM.
GO to PINPOINT
TEST G .
The front axle is not engaging correctly (transfer case
motor movement OK)
z
GEM.
z
4x4 solenoid.
z
4x2 solenoid.
z
Circuitry.
GO to PINPOINT
TEST H .
The 4x4 LOW range indicator does not operate correctly
z
Fuse(s).
z
Circuitry.
z
MSOF switch.
z
Digital TR sensor.
z
PCM.
GO to PINPOINT
TEST J .
No communication with the module - GEM
z
GEM.
z
Fuse(s).
z
Circuitry.
GO to PINPOINT
TEST K .
2003 Ford Pickup F150
2003 TRANSMISSIONS Transfer Case - General Information - F150 Pickup
Fig. 78: Pinpoint Test G: 4X4 High Does Not Engage At Speed Correctly (Driveline Does Not
Synchronize Correctly) But Does Engage At Rest (Steps G1-G4)
Courtesy of FORD MOTOR CO.
2003 Ford Pickup F150
2003 TRANSMISSIONS Transfer Case - General Information - F150 Pickup
Fig. 79: Pinpoint Test G: 4X4 High Does Not Engage At Speed Correctly (Driveline Does Not
Synchronize Correctly) But Does Engage At Rest (Steps G5-G6)
Courtesy of FORD MOTOR CO.
2003 Ford Pickup F150
2003 TRANSMISSIONS Transfer Case - General Information - F150 Pickup
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