Ford Falcon. Manual — part 370

417-01-19 Exterior

Lighting 417-01-19

DIAGNOSIS AND TESTING (Continued)

C-705 Ute Cab Chassis RH Tail Lamp

Pin Number(s)

Circuit Designation/Description

Normal Condition/Measurement

1

Circuit 2B (G-L)

0 voltage, less than 5 ohms between RH tail

RH turn signal power input

lamp and cluster

2

Circuit 57A (B)

0 voltage, less than 5 ohms between RH tail

RH tail lamp ground

lamp and chassis ground

C-707 Ute Cab Chassis LH Tail Lamp

Pin Number(s)

Circuit Designation/Description

Normal Condition/Measurement

1

Circuit 3B (G)

0 voltage, less than 5 ohms between LH tail

LH turn signal power input

lamp and cluster

2

Circuit 57B (B)

0 voltage, less than 5 ohms between LH tail

LH tail lamp ground

lamp and chassis ground

C-706 Ute Style Side Box RH Tail Lamp

Pin Number(s)

Circuit Designation/Description

Normal Condition/Measurement

1

Circuit 2B (G-L)

0 voltage, less than 5 ohms between RH tail

RH turn signal power input

lamp and cluster

2

Circuit 57A (B)

0 voltage, less than 5 ohms between RH tail

RH tail lamp ground

lamp and chassis ground

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417-01-20 Exterior

Lighting 417-01-20

DIAGNOSIS AND TESTING (Continued)

C-708 Ute Style Side Box LH Tail Lamp

Pin Number(s)

Circuit Designation/Description

Normal Condition/Measurement

1

Circuit 3B (G)

0 voltage, less than 5 ohms between LH tail

LH turn signal power input

lamp and cluster

2

Circuit 57E (B)

0 voltage, less than 5 ohms between LH tail

LH tail lamp ground

lamp and chassis ground

Inspection and Verification

Visual Inspection Chart

Mechanical

Electrical

Multifunction switch

Junction Box (JB):

fuse 17 (15A)

Circuitry

Turn Signal and

Hazard Lamp Bulbs

Multifunction switch

Cluster

Symptom Chart

Condition

Source

Action

The turn signal lamps are inoperative

Circuitry

Go to PinPoint Test H

Multifunction switch
Cluster

The turn signal lamps are always on

Multifunction switch

Go to PinPoint Test I

Cluster

One turn signal/hazard lamp is

Circuitry

Go to PinPoint Test J

inoperative

The hazard lamps are inoperative

Circuitry

Go to PinPoint Test K

Cluster

The hazard lamps are always on

Cluster

Perform the cluster testing in Section

413-01.

Cluster C-171

Pinpoint Tests

Circuit 2C (G-L) or 3C(G) open or short to ground

The turn signal lamps are inoperative

Possible causes:

Circuit 8 (G-B) open or short to ground
Multifunction switch C-167
Circuit 2 (G-L) or 3 (G) open or short to ground

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417-01-21 Exterior

Lighting 417-01-21

DIAGNOSIS AND TESTING (Continued)

PINPOINT TEST H : THE TURN SIGNAL LAMPS ARE INOPERATIVE

Test Step

Result / Action to Take

H1

CHECK MULTIFUNCTION SWITCH INPUT VOLTAGE

Disconnect: Multifunction switch C-167.

Yes

Go to H2

Turn ON ignition.

No

Measure the voltage between the Multifunction switch C-167, circuit 8

Repair circuit 8 (G-B).

(G-B), harness side and ground.

Test the system for normal operation.

Is the voltage greater than 10 volts?

H2

CHECK THE MULTIFUNCTION SWITCH

Turn OFF ignition.

Yes

Go to H3

Perform the Multifunction switch testing in Section 211-05.

No

Is the Multifunction switch functioning correctly?

Replace the Multifunction switch, see Section
211-05.
Test the system for normal operation.

H3

CHECK CLUSTER INDICATOR INPUT

Connect: Multifunction switch C-167.

Yes

Go to H4

Disconnect: Cluster C-171.

No

Turn ON ignition.

Repair circuit.

Turn ON inoperative indicator.

Test the system for normal operation.

Measure the voltage between inoperative indicator harness side and
ground

for RH indicator use cluster C-171, circuit 2 (G-L), harness
side and ground.
for LH indicator use cluster C-171, circuit 3 (G), harness
side and ground.

Is the voltage greater than 10 volts?

H4

CHECK INDICATOR LAMP POWER INPUT FOR A

SHORT TO GROUND

Turn OFF ignition.

Yes

Repair circuit.

Disconnect: Inoperative lamp.

Test the system for normal operation.

Measure the resistance between the inoperative lamp, harness side

No

and ground

Go to H5

for RH indicator use circuit 2 (G-L), harness side and
ground.

for LH indicator use circuit 3 (G), harness side and ground.

Is the resistance less than 5 ohms?

H5

CHECK INDICATOR LAMP POWER INPUT FOR AN

OPEN

Measure the resistance between the inoperative lamp, harness side

Yes

and cluster C-171, harness side

Perform the cluster testing in Section 413-01.
Test the system for normal operation.

for RH indicator measure between, inoperative lamp, circuit
2 (G-L), harness side and cluster C-171, circuit 2C (G),

No

harness side.

Repair circuit.

for LH indicator measure between, inoperative lamp, circuit

Test the system for normal operation.

3 (G), harness side and cluster C-171, circuit 3C (GL),
harness side.

Is the resistance less than 5 ohms?

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417-01-22 Exterior

Lighting 417-01-22

DIAGNOSIS AND TESTING (Continued)

Circuit 2C (G-L) or 3C (G) short to power

The turn signal lamps are always on

Possible causes:

Multifunction switch C-167
Circuit 2 (G-L) or 3 (G) short to power
Cluster C-171

PINPOINT TEST I : THE TURN SIGNAL LAMPS ARE ALWAYS ON

Test Step

Result / Action to Take

I1

CHECK THE MULTIFUNCTION SWITCH

Disconnect: Multifunction switch C-167.

Yes

Go to I2

Are the turn signals always on?

No

Perform the Multifunction switch testing in
Section 211-01.
Test the system for normal operation.

I2

CHECK CLUSTER

Disconnect: Cluster C-171.

Yes

Repair circuit 3C (G) if LH lights are illuminated

Are the turn signals always on?

or circuit 2C (G-L) if RH lamps are illuminated.
Test the system for normal operation.

No

Go to I3

I3

CHECK INDICATOR LAMP POWER INPUT FOR AN

OPEN

Measure the voltage between malfunctioning indicator, harness side

Yes

and ground

Repair circuit.
Test the system for normal operation.

for RH indicator use cluster C-171, circuit 2 (G-L), harness
side and ground.

No

for LH indicator use cluster C-171, circuit 3 (G), harness

Perform the cluster testing in Section 413-01.

side and ground.

Test the system for normal operation.

Is the voltage greater than 10 volts?

One turn signal/hazard lamp is inoperative

Possible causes:

Circuit 2 (G-L) or 3 (G) open
Circuit 57 (B) open

PINPOINT TEST J : ONE TURN SIGNAL HAZARD LAMP IS INOPERATIVE

Test Step

Result / Action to Take

J1

CHECK INOPERATIVE LAMP INPUT

Disconnect: Inoperative lamp.

Yes

Repair circuit 57 (B).

Turn ON ignition.

Test the system for normal operation.

Turn ON hazard lights.

No

Measure the voltage between the inoperative lamp, harness side and

Repair circuit 2 (G-L) or 3 (G).

ground

Test the system for normal operation.

for RH lamp use circuit 2 (G-L), harness side and ground.

for LH lamp use circuit 3 (G), harness side and ground.

Is the voltage greater than 10 volts?

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