Parking lights (cars after 08.2001) — Pinpoint tests (Focus 1)

AI1: DETERMINING THE STATE IN WHICH THE MALFUNCTION OCCURS.

1Turn on the PARAMETER LIGHTS.

2Check the parking lights, tail lights and license plate lights

• The right side light(s) and, accordingly, the license plate light do not work?

→ Yes

Side Light and Tail Light: Go to AI2

Side Light: Go to AI4

Tail Light: Go to AI8

Both Tail Lights: Using the wiring diagrams, REPAIR the open in circuit 31-DA18 (black), between splice S184 (ground point G46) and ground point G46. Check for proper system operation.

License Plate Light: Go to AI16

Both License Plate Lights: Go to AI19

All parking lights, tail lights and license plate lights do not work: Go to AI22

→ No

Parking lights and tail lights are OK with parking lights on, but do not work with parking lights on: Go to AI25

Side light and tail light, left side: Go to AI3

Side light, left side: Go to AI6

Rear light, left side: Go to AI12

Number Plate Light, Left Side: Go to AI18

AI2: CHECKING FUSE F57 (CJB)

1Enter the OFF position.

2CHECK Fuse F57 (CJB).

3Check fuse F57 (7.5 A)

• Is the fuse good?

→ Yes

Go to AI3

→ No

INSTALL a new fuse F57 (7.5 A) and CHECK the system. If the fuse blows again, LOCATE and REPAIR the short circuit using the wiring diagrams. Check the system for proper operation.

AI3: CHECKING FUSE F58 (CJB)

1Enter the OFF position.

2CHECK Fuse F58 (CJB).

3Check fuse F58 (7.5 A)

• Is the fuse good?

→ Yes

CHECK CJB, INSTALL new if necessary. Check system operation is correct.

→ No

INSTALL a new fuse F58 (7.5A) and TEST the system. If the fuse blows again, LOCATE and REPAIR the short circuit using the wiring diagrams. Check for proper system operation.

AI4: CHECKING THE RIGHT HEADLAMP GROUND CIRCUIT

1Enter the ON position.

2Turn on the right TURN SIGNAL.

3Check the front turn signal.

• Does the direction indicator work properly?

→ Yes

Go to AI5

→ No

Using the wiring diagrams, REPAIR the open in circuit 31-LE30 (black) between the headlamp and splice S109 (ground point G56). Check for proper system operation.

AI5: CHECKING THE VOLTAGE IN THE RIGHT HEADLAMP CIRCUIT

1Enter the OFF position.

2Disconnect C837 right headlight.

3Turn on the PARAMETER LIGHTS.

4Measure the voltage between pin 4 of connector C837 right headlight, circuit 29S-LF16 (OG/GN), harness side and ground.

• Is battery voltage registered?

→ Yes

CHECK the headlight, INSTALL a new one if necessary. Check that the system is working properly.

→ No

Using the wiring diagrams, REPAIR the open in circuit 29S-LF16 (Orange/Green) between the CJB and the right-hand headlamp. Check for proper system operation.

AI6: CHECKING THE LEFT HEADLAMP GROUND CIRCUIT

1Enter the ON position.

2Turn on the left TURN SIGNAL.

3Check the front turn signal.

• Does the direction indicator work properly?

→ Yes

Go to AI7

→ No

Using the wiring diagrams, REPAIR the open in circuit 31-LE31 (black) between the headlamp and splice S121 (ground point G37). Check for proper system operation.

AI7: CHECKING THE VOLTAGE IN THE LEFT HEADLAMP CIRCUIT

1Enter the OFF position.

2Disconnect C836 left headlight.

3Turn on the PARAMETER LIGHTS.

4Measure the voltage between pin 4 of connector C836 left headlight, circuit 29S-LF7 (orange/blue), harness side, and ground.

• Is battery voltage registered?

→ Yes

CHECK the headlight, INSTALL a new one if necessary. Check that the system is working properly.

→ No

Using the wiring diagrams, REPAIR the open in circuit 29S-LF7 (Orange/Blue) between the CJB and the left headlamp. Check for proper system operation.

AI8: CHECKING THE GROUND CIRCUIT OF THE RIGHT TAIL LAMP ASSEMBLY

1Enter the ON position.

2Turn on the STOP LIGHTS.

3Check the brake lights.

• Are the brake lights on?

→ Yes

"Universal" Go to AI9

3/5 door version: Go to AI10

4-door version: Go to AI11

→ No

Using the wiring diagrams, REPAIR the open in circuit 31-LE24 (black), between the right tail lamp assembly and splice S184 (ground point G46). Check for proper system operation.

AI9: CHECKING THE VOLTAGE IN THE RIGHT REAR LAMP ASSEMBLY (ESTATE)

1Enter the OFF position.

2Disconnect C475 right rear light assembly.

3Turn on the PARAMETER LIGHTS.

4Measure the voltage between pin 2 of connector C475 right tail lamp assembly, circuit 29S-LF20 (orange), harness side and ground.

• Is battery voltage registered?

→ Yes

CHECK the tail light assembly, INSTALL a new one if necessary. Check that the system is working properly.

→ No

Using the wiring diagrams, REPAIR the open in circuit 29S-LF20 (orange) between the CJB and the right tail lamp assembly. Check for proper system operation.

AI10: CHECKING THE VOLTAGE IN THE RIGHT REAR LAMP ASSEMBLY CIRCUIT (3/5-DOOR VERSION)

1Enter the OFF position.

2Disconnect C473 right rear light assembly.

3Turn on the PARAMETER LIGHTS.

4Measure the voltage between pin 1 of connector C473 right tail lamp assembly, circuit 29S-LF20 (orange), harness side and ground.

• Is battery voltage registered?

→ Yes

CHECK the tail light assembly, INSTALL a new one if necessary. Check that the system is working properly.

→ No

Using the wiring diagrams, REPAIR open in circuit 29S-LF20 (orange), between CJB and right tail lamp assembly. Check for proper system operation.

AI11: CHECKING THE VOLTAGE IN THE RIGHT REAR LAMP ASSEMBLY CIRCUIT (4-DOOR VERSION)

1Enter the OFF position.

2Disconnect C477 right rear light assembly.

3Turn on the PARAMETER LIGHTS.

4Measure the voltage between pin 3 of connector C477 right tail lamp assembly, circuit 29S-LF20 (orange), harness side and ground.

• Is battery voltage registered?

→ Yes

CHECK the tail light assembly, INSTALL a new one if necessary. Check that the system is working properly.

→ No

Using the wiring diagrams, REPAIR the open in circuit 29S-LF20 (orange) between the CJB and the right tail lamp assembly. Check for proper system operation.

AI12: CHECKING THE GROUND CIRCUIT OF THE LEFT REAR LAMP ASSEMBLY

1Enter the ON position.

2Turn on the STOP LIGHTS.

3Check the brake lights.

• Are the brake lights on?

→ Yes

"Universal" Go to AI13

3/5 door version: Go to AI14

4-door version: Go to AI15

→ No

Using the wiring diagrams, REPAIR the open in circuit 31-LE23 (Black) between the left tail lamp assembly and splice S184 (ground point G46). Check for proper system operation.

AI13: CHECKING THE VOLTAGE IN THE ELECTRICAL CIRCUIT OF THE LEFT REAR LAMP ASSEMBLY ("ESTATE")

1Enter the OFF position.

2Disconnect C474 left rear light assembly.

3Turn on the PARAMETER LIGHTS.

4Measure the voltage between pin 2 of connector C474 left tail lamp assembly, circuit 29S-LF11 (OR/WH), harness side and ground.

• Is battery voltage registered?

→ Yes

CHECK the tail light assembly, INSTALL a new one if necessary. Check that the system is working properly.

→ No

Using the wiring diagrams, REPAIR the open in circuit 29S-LF11 (Orange/White) between the CJB and the left tail lamp assembly. Check for proper system operation.

AI14: CHECKING VOLTAGE IN THE ELECTRICAL CIRCUIT OF THE LEFT REAR LAMP ASSEMBLY (3/5-DOOR VERSION)

1Enter the OFF position.

2Disconnect C472 left rear light assembly.

3Turn on the PARAMETER LIGHTS.

4Measure the voltage between pin 1 of connector C472 left tail lamp assembly, circuit 29S-LF11 (OG/WH), harness side and ground.

• Is battery voltage registered?

→ Yes

CHECK the tail light assembly, INSTALL a new one if necessary. Check that the system is working properly.

→ No

Using the wiring diagrams, REPAIR the open in circuit 29S-LF11 (Orange/White) between the CJB and the left tail lamp assembly. Check for proper system operation.

AI15: CHECKING THE VOLTAGE IN THE LEFT REAR LAMP ASSEMBLY CIRCUIT (4-DOOR VERSION)

1Enter the OFF position.

2Disconnect C476 left tail light assembly.

3Turn on the PARAMETER LIGHTS.

4Measure the voltage between pin 2 of connector C476 left tail lamp assembly, circuit 29S-LF11 (OR/WH), harness side and ground.

• Is battery voltage registered?

→ Yes

CHECK the tail light assembly, INSTALL a new one if necessary. Check that the system is working properly.

→ No

Using the wiring diagrams, REPAIR the open in circuit 29S-LF11 (Orange/White) between the CJB and the left tail lamp assembly. Check for proper system operation.

AI16: CHECKING THE VOLTAGE IN THE RIGHT LICENSE PLATE LAMP CIRCUIT

1Enter the OFF position.

2Disconnect C497 right license plate lamp.

3Turn on the PARAMETER LIGHTS.

4Measure the voltage between connector C497 right license plate lamp, circuit 29S-LF22 (OR/BLK), harness side and ground.

• Is battery voltage registered?

→ Yes

Go to AI17

→ No

Using the wiring diagrams, REPAIR the open in circuit 29S-LF22 (orange/black) between left license plate lamp and right license plate lamp. Check for proper system operation.

AI17: CHECKING THE GROUND CIRCUIT OF THE RIGHT LICENSE PLATE LAMP

1Disconnect C496 right license plate lamp.

2Turn off the PARAMETER LIGHTS.

3Measure the resistance between connector C496 right license plate lamp, circuit 31-LF22 (black), harness side and ground.

• Is the resistance less than 2 ohms?

→ Yes

CHECK the license plate light bulb, INSTALL a new one if necessary. Check that the system is working properly.

→ No

Using the wiring diagrams, REPAIR the open in circuit 31-LF22 (Black) between the right license plate lamp and splice S196 (ground point G35). Check for proper system operation.

AI18: CHECKING THE LEFT LICENSE PLATE LAMP GROUND CIRCUIT

1Disconnect C494 left license plate lamp.

2Turn off the PARAMETER LIGHTS.

3Measure the resistance between connector C494 left license plate lamp, circuit 31-LF21 (black), harness side and ground.

• Is the resistance less than 2 ohms?

→ Yes

CHECK the license plate light bulb, INSTALL a new one if necessary. Check that the system is working properly.

→ No

Using the wiring diagrams, REPAIR the open in circuit 31-LF21 (Black) between the left license plate lamp and splice S196 (ground point G35). Check for proper system operation.

AI19: CHECKING FUSE F62 (CJB)

1Enter the OFF position.

2CHECK Fuse F62 (CJB).

3Check fuse F62 (7.5A)

• Is the fuse good?

→ Yes

Go to AI20

→ No

INSTALL a new fuse F62 (7.5A) and TEST the system. If the fuse blows again, LOCATE and REPAIR the short circuit using the wiring diagrams. Check for proper system operation.

AI20: CHECKING THE VOLTAGE IN THE ELECTRICAL CIRCUIT OF THE FUSE F62 (CJB)

1Connect Fuse F62 (CJB).

2Turn on the PARAMETER LIGHTS.

3Measure the voltage between fuse F62 and ground.

• Is battery voltage registered?

→ Yes

Go to AI21

→ No

Go to AI22

AI21: CHECKING THE VOLTAGE IN THE LEFT LICENSE PLATE LAMP CIRCUIT

1Disconnect C495 left license plate lamp.

2Turn on the PARAMETER LIGHTS.

3Measure the voltage between connector C495 left license plate lamp, circuit 29S-LF21 (OR/BLK), harness side and ground.

• Is battery voltage registered?

→ Yes

Using the wiring diagrams, REPAIR open in circuit 31-DA13(A) (black) between splice S196 (ground point G35) and ground point G15. Check for proper system operation.

→ No

Using the wiring diagrams, REPAIR the open in circuit 29S-LF21 (OR/BLK) between fuse F62 and left-hand license plate lamp. INSTALL a new CJB if necessary. Check the system for proper operation.

AI22: CHECKING THE LIGHT SWITCH

1Disconnect the C320 light switch.

2Check the light switch as described in the section "Checking the components" attached to the electrical connection diagrams.

• Is the light switch OK?

→ Yes

Only license plate lamps do not work: Using the wiring diagrams, REPAIR the open in circuit 29S-LF5 (orange/blue) between the light switch and fuse F62 (CJB). INSTALL a new CJB if necessary. Check the system for proper operation.

Front parking lights and rear lights do not work, license plate lights are OK: Using the wiring diagrams, REPAIR the open in circuit 29S-LF1 (orange/yellow) between the light switch and fuses F57, F58 (CJB). If necessary, INSTALL a new CJB. Check the system for proper operation.

Parking lights, tail lights and license plate lights do not work: Go to AI23

→ No

INSTALL a new light switch. Check that the system operates correctly.

AI23: CHECKING FUSE F30 (CJB)

1Enter the OFF position.

2CHECK Fuse F30 (CJB).

3Check fuse F30 (10A)

• Is the fuse good?

→ Yes

Go to AI24

→ No

INSTALL a new F30 (10A) fuse and TEST the system. If the fuse blows again, LOCATE and REPAIR the short circuit using the wiring diagrams. Check for proper system operation.

AI24: CHECKING THE VOLTAGE IN THE ELECTRICAL CIRCUIT OF THE FUSE F30 (CJB)

1Connect Fuse F30 (CJB).

2Measure the voltage between fuse F30 and ground.

• Is battery voltage registered?

→ Yes

Using the wiring diagrams, REPAIR the open in circuit 29-LE29 (Orange/Black) between fuse F30 (CJB) and the light switch. INSTALL a new CJB if necessary. Check the system for proper operation.

→ No

Install a new CJB. Check that the system is working properly.

AI25: CHECKING THE VOLTAGE IN THE LIGHTING SWITCH CIRCUIT

1Enter the OFF position.

2Disconnect the C320 light switch.

3Measure the voltage between pin 12 of the light switch connector C320, circuit 30S-LE29A (red/green), harness side, and ground.

• Is battery voltage registered?

→ Yes

INSTALL a new light switch. Check that the system operates correctly.

→ No

Go to AI26

AI26: CHECKING THE IGNITION SWITCH

1Disconnect C456 ignition switch.

2Install a fused jumper wire (10 A) into ignition switch connector C456, between pin 2, circuit 30S-LE29 (red/green), and pin 4, circuit 30-BB9 (red), on the harness side.

3Measure the voltage between pin 12 of the light switch connector C320, circuit 30S-LE29A (red/green), harness side, and ground.

• Is battery voltage registered?

→ Yes

Install a new ignition switch. Check that the system is working properly.

→ No

Using the wiring diagrams, REPAIR open in circuit 30S-LE29(A) (red/green) between ignition switch and light switch. Check for proper system operation.

AJ1: DETERMINING THE PRESENCE OF A SHORT CIRCUIT IN THE POWER SUPPLY CIRCUIT

1Enter the OFF position.

2Disconnect Fuse F57 (CJB).

3Enter the ON position.

4Check the parking lights.

• Are the right side lights constantly on?

→ Yes

Using the wiring diagrams, LOCATE and REPAIR the short to power in the circuit connected to fuse F57 and to pin 7 of connector C17 of the CJB. INSTALL a new CJB if necessary. Check the system for proper operation.

→ No

Go to AJ2

AJ2: DETERMINING THE PRESENCE OF A SHORT CIRCUIT IN THE POWER SUPPLY CIRCUIT

1Enter the OFF position.

2Disconnect Fuse F58 (CJB).

3Enter the ON position.

4Check the parking lights.

• Are the left side lights constantly on?

→ Yes

Using the wiring diagrams, LOCATE and REPAIR the short to power in the circuit connected to fuse F58 and to pin 3 of connector C17 of the CJB. INSTALL a new CJB if necessary. Check the system for proper operation.

→ No

Go to AJ3

AJ3: DETERMINING THE PRESENCE OF A SHORT CIRCUIT IN THE POWER SUPPLY CIRCUIT

1Enter the OFF position.

2Disconnect Fuse F62 (CJB).

3Connect Fuse F57 (CJB).

4Connect Fuse F58 (CJB).

5Enter the ON position.

6Check the parking lights.

• Are the side lights constantly on?

→ Yes

Go to AJ4

→ No

Using the wiring diagrams, LOCATE and REPAIR the short to power in the circuit connected to fuses F62 and to pin 11 of connector C16 of the CJB. INSTALL a new CJB if necessary. Check the system for proper operation.

AJ4: DETERMINING THE PRESENCE OF A SHORT CIRCUIT IN THE POWER SUPPLY CIRCUIT

1Enter the OFF position.

2Connect Fuse F62 (CJB).

3Disconnect the C320 light switch.

4Enter the ON position.

5Check the license plate lights.

• Are the license plate lights constantly on?

→ Yes

Go to AJ6

→ No

Go to AJ5

AJ5: DETERMINING THE CAUSE OF THE MALFUNCTION

1Check the parking lights.

• Are the side lights constantly on?

→ Yes

Using the wiring diagrams, LOCATE and REPAIR the short to power in the circuit connected to fuses F57, F58 and to pin 13 of connector C320 of the light switch. INSTALL a new CJB if necessary. Check the correct operation of the system.

→ No

INSTALL a new light switch. Check that the system operates correctly.

AJ6: DETECTING THE PRESENCE OF A SHORT CIRCUIT IN THE POWER SUPPLY CIRCUIT

1Enter the OFF position.

2Disconnect C104 General Electronic Module (GEM).

3Enter the ON position.

4Check the license plate lights.

• Are the license plate lights constantly on?

→ Yes

Using the wiring diagrams, LOCATE and REPAIR the short to power in the circuit connected to fuses F62 and to pin 10 of connector C16 of the CJB. INSTALL a new CJB if necessary. CHECK the system operates correctly.

→ No

Go to AJ7

AJ7: CHECKING THE SYSTEM USING WDS

1Enter the OFF position.

2Connect C320 light switch.

3Connect C104 to the General Electronic Module (GEM).

4Connect the diagnostic tool.

5Check the system using WDS.

• Are there any diagnostic trouble codes (DTCs)?

→ Yes

PERFORM the necessary actions for the DTCs as directed by the WDS. CLEAR the fault memory and CHECK the system for proper operation.

→ No

INSTALL a new Generic Electronic Module (GEM). CHECK the system for proper operation.