Ford F150 Pickup. Instruction — part 323

P1804

Transmission 4-Wheel Drive High

Indicator Circuit Failure

GEM

REFER to INSTRUMENT CLUSTER-

CONVENTIONAL - F150 .

P1806

Transmission 4-Wheel Drive High

Indicator Short Circuit to Battery

GEM

REFER to INSTRUMENT CLUSTER-

CONVENTIONAL - F150 .

P1812

Transmission 4-Wheel Drive Mode

Select Circuit Failure

GEM

REFER to TRANSFER CASE -

GENERAL INFORMATION - F150

PICKUP .

P1815

Transmission 4-Wheel Drive Mode

Select Short Circuit to Ground

GEM

REFER to TRANSFER CASE -

GENERAL INFORMATION - F150

PICKUP .

P1820 Transmission Transfer Case Clockwise

Shift Relay Coil Circuit Failure

GEM

REFER to TRANSFER CASE -

GENERAL INFORMATION - F150

PICKUP .

P1822 Transmission Transfer Case Clockwise

Shift Relay Coil Short Circuit to Battery

GEM

REFER to TRANSFER CASE -

GENERAL INFORMATION - F150

PICKUP .

P1824

Transmission 4-Wheel Drive Clutch

Relay Circuit Failure

GEM

REFER to TRANSFER CASE -

GENERAL INFORMATION - F150

PICKUP .

P1826

Transmission 4-Wheel Drive Low

Clutch Relay Short Circuit to Battery

GEM

REFER to TRANSFER CASE -

GENERAL INFORMATION - F150

PICKUP .

P1828

Transmission Transfer Case Counter

Clockwise Shift Relay Coil Circuit

Failure

GEM

REFER to TRANSFER CASE -

GENERAL INFORMATION - F150

PICKUP .

P1830

Transmission Transfer Case Counter

Clockwise Shift Relay Coil Short

Circuit to Battery

GEM

REFER to TRANSFER CASE -

GENERAL INFORMATION - F150

PICKUP .

P1832 Transmission Transfer Case Differential

Lock-Up Solenoid Circuit Failure

GEM

REFER to TRANSFER CASE -

GENERAL INFORMATION - F150

PICKUP .

P1834 Transmission Transfer Case Differential

Lock-Up Solenoid Short Circuit to

Battery

GEM

REFER to TRANSFER CASE -

GENERAL INFORMATION - F150

PICKUP .

P1838 Transmission Transfer Case Shift Motor

Circuit Failure

GEM

REFER to TRANSFER CASE -

GENERAL INFORMATION - F150

PICKUP .

P1846

Transmission Transfer Case Contact

Plate 'A' Circuit Failure

GEM

REFER to TRANSFER CASE -

GENERAL INFORMATION - F150

PICKUP .

P1850

Transmission Transfer Case Contact

Plate 'B' Circuit Failure

GEM

REFER to TRANSFER CASE -

GENERAL INFORMATION - F150

PICKUP .

P1854

Transmission Transfer Case Contact

Plate 'C' Circuit Failure

GEM

REFER to TRANSFER CASE -

GENERAL INFORMATION - F150

2003 Ford Pickup F150

2003 ACCESSORIES AND EQUIPMENT Wipers and Washers - F150 Pickup

Symptom Chart

SYMPTOM CHART

PICKUP .

P1858

Transmission Transfer Case Contact

Plate 'D' Circuit Failure

GEM

REFER to TRANSFER CASE -

GENERAL INFORMATION - F150

PICKUP .

P1866

Transmission Transfer Case System

Concern - Servicing Required

GEM

REFER to TRANSFER CASE -

GENERAL INFORMATION - F150

PICKUP .

P1867

Transmission Transfer Case Contact

Plate General Circuit Failure

GEM

REFER to TRANSFER CASE -

GENERAL INFORMATION - F150

PICKUP .

P1876

Transmission Transfer Case 2-Wheel

Drive Solenoid Circuit Failure

GEM

REFER to TRANSFER CASE -

GENERAL INFORMATION - F150

PICKUP .

P1877

Transmission Transfer Case 2-Wheel

Drive Solenoid Circuit Short to Battery

GEM

REFER to TRANSFER CASE -

GENERAL INFORMATION - F150

PICKUP .

P1891

Transmission Transfer Case Contact

Plate Ground Return Open Circuit

GEM

REFER to TRANSFER CASE -

GENERAL INFORMATION - F150

PICKUP .

Condition

Possible Sources

Action

The wipers are inoperative

z

Fuse(s) 11(30A), 15 (5A), 20
(50A), 103 (50A), and 21(50A).

z

Circuitry.

z

GEM/CTM.

z

Multifunction switch (13K359)
(wiper/washer switch).

z

Windshield wiper run/park relay.

z

Windshield wiper hi/lo relay.

z

Windshield wiper motor (17508).

GO to PINPOINT

TEST A .

The wipers stay on continuously

z

GEM/CTM.

z

Multifunction switch
(wiper/washer switch).

z

Circuitry.

z

Windshield wiper run/park relay.

z

Windshield wiper motor.

z

Windshield wiper hi/lo relay.

GO to PINPOINT

TEST B .

The high/low wiper speeds do not operate
correctly

z

GEM/CTM.

GO to PINPOINT

TEST C .

2003 Ford Pickup F150

2003 ACCESSORIES AND EQUIPMENT Wipers and Washers - F150 Pickup

Pinpoint Tests

z

Multifunction switch
(wiper/washer switch).

z

Circuitry.

z

Windshield wiper hi/lo relay.

z

Windshield wiper motor.

The intermittent wiper speed does not
operate correctly (high/low wiper speeds
OK)

z

GEM/CTM.

z

Multifunction switch
(wiper/washer switch).

z

Circuitry.

z

Windshield wiper motor.

GO to PINPOINT

TEST D .

The wash and wipe function does not
operate correctly

z

GEM/CTM.

z

Multifunction switch
(wiper/washer switch).

z

Circuitry.

z

Washer pump relay.

z

Windshield washer pump
(17664).

GO to PINPOINT

TEST E .

The speed dependent interval mode does
not operate correctly-GEM

z

GEM.

z

Circuitry.

z

Vehicle speed sensor (VSS)
(9E731).

GO to PINPOINT

TEST F .

No communication with the module

z

Circuitry.

z

Fuse(s) 103 (50A) and 15 (5A).

z

GEM/CTM.

GO to PINPOINT

TEST G .

CAUTION: Disconnect the battery before removing and installing the GEM/CTM or its

connectors. Failure to follow this caution will result in the GEM/CTM
storing many erroneous DTCs and it may exhibit erratic operation after
installation.

CAUTION: Be careful when probing the central junction box, power distribution box

or any connectors. Damage will result to the connector receptacle if the
probe or terminal being used is too large.

CAUTION: Electronic modules are sensitive to electrostatic discharges. If exposed to

these charges, damage may result.

2003 Ford Pickup F150

2003 ACCESSORIES AND EQUIPMENT Wipers and Washers - F150 Pickup

PINPOINT TEST A: WIPERS ARE INOPERATIVE

Fig. 5: Pinpoint Test A: Wipers Are Inoperative (A1)
Courtesy of FORD MOTOR CO.

NOTE:

If continuous DTCs are recorded and the symptom is not present when carrying
out the Pinpoint Tests, an intermittent concern may be the cause. Always check
for loose connections and corroded pins.

NOTE:

Complete the entire Pinpoint Test related to the symptom before installing a
new GEM/CTM.

2003 Ford Pickup F150

2003 ACCESSORIES AND EQUIPMENT Wipers and Washers - F150 Pickup