Headlight level correction (after 08.2001) — Pinpoint tests (Focus 1)

P1: DETERMINING THE STATE IN WHICH THE MALFUNCTION OCCURS

1Enter the ON position.

2Turn on the low beam headlights.

3Adjust the HEADLIGHT BEAM LEVELS CORRECTION.

4Check the headlight aiming adjustment.

• Both headlights are not adjustable?

→ Yes

Go to P10

→ No

Left headlight not adjustable: Go to P2

Right headlight not adjustable: Go to P6

P2: CHECKING THE LEFT HEADLAMP POWER SUPPLY CIRCUIT

1Turn on the PARKING LIGHTS.

2Check the left parking light.

• Is the parking light on?

→ Yes

Go to P3

→ No

Section 417-01 Parking, Tail, and License Plate Lamps

P3: CHECKING THE LEFT HEADLAMP LEVELING CONTROL CIRCUIT

1Enter the OFF position.

2Disconnect C836 left headlight.

3Enter the ON position.

4Turn on the low beam headlights.

5Adjust the HEADLIGHT BEAM LEVELS CORRECTION.

6Measure the voltage between pin 5 of connector C836 left headlight, circuit 64-LE45 (blue), harness side, and ground.

• Does the detected voltage change according to the adjustment of the headlight leveling switch?

→ Yes

Go to P4

→ No

Using the wiring diagrams, REPAIR the open in the 64-LE45 (blue) circuit between splice S106 and the headlamp. Check for proper system operation.

P4: CHECKING THE LEFT HEADLAMP LEVELING MOTOR GROUND CIRCUIT

1Enter the OFF position.

2Measure the resistance between pin 7 of connector C836 left headlight, electrical circuit 91-LE45 (yellow/blue), harness side, and ground.

• Is the resistance less than 2 ohms?

→ Yes

Go to P5

→ No

Using the wiring diagrams, REPAIR the open in the 91-LE45 (yellow/blue) circuit between the headlamp and splice S118. Check for proper system operation.

P5: CHECKING THE ELECTRICAL CIRCUITS OF THE LEFT HEADLAMP LEVELING MOTOR

1Enter the OFF position.

2Measure the resistance of all electrical circuits between the headlight leveling motor connector C2000, wiring side, and the corresponding pin of the left headlight connector C836, element side.

• Does the result of each resistance measurement exceed 2 ohms?

→ Yes

CHECK the headlight leveling motor, pay attention to mechanical damage. If necessary, INSTALL a new one. Check the correct operation of the system.

→ No

Using the electrical wiring diagrams, REPAIR the appropriate electrical circuit. Check that the system is operating correctly.

P6: CHECKING THE RIGHT HEADLAMP POWER SUPPLY CIRCUIT

1Turn on the PARKING LIGHTS.

2Check the right parking light.

• Is the parking light on?

→ Yes

Go to P7

→ No

Section 417-01 Parking, Tail, and License Plate Lamps

P7: CHECKING THE RIGHT HEADLAMP LEVELING CONTROL CIRCUIT

1Enter the OFF position.

2Disconnect C837 right headlight.

3Enter the ON position.

4Turn on the low beam headlights.

5Adjust the HEADLIGHT BEAM LEVELS CORRECTION.

6Measure the voltage between pin 5 of connector C837 right headlight, circuit 64-LE46 (red/blue), harness side, and ground.

• Does the detected voltage change according to the adjustment of the headlight leveling switch?

→ Yes

Go to P8

→ No

Using the wiring diagrams, REPAIR the open in the 64-LE46 (red/blue) circuit between splice S106 and the headlamp. Check for proper system operation.

P8: CHECKING THE LEFT HEADLAMP LEVELING MOTOR GROUND CIRCUIT

1Enter the OFF position.

2Measure the resistance between pin 7 of connector C837right headlight, electrical circuit 91-LE46 (black/blue), wiring side, and ground.

• Is the resistance less than 2 ohms?

→ Yes

Go to P9

→ No

Using the wiring diagrams, REPAIR the open in the 91-LE46 (BLK/BLUE) circuit between the headlamp and splice S118. Check for proper system operation.

P9: CHECKING THE ELECTRICAL CIRCUITS OF THE RIGHT HEADLAMP LEVELING MOTOR

1Measure the resistance of all electrical circuits between the headlamp leveling motor connector C2001, harness side, and the corresponding pin of the left headlamp connector C837, element side.

• Does the result of each resistance measurement exceed 2 ohms?

→ Yes

CHECK the headlight leveling motor, pay attention to mechanical damage. If necessary, INSTALL a new one. Check the correct operation of the system.

→ No

Using the electrical wiring diagrams, REPAIR the appropriate electrical circuit. Check that the system is operating correctly.

P10: CHECK ELECTRICAL CIRCUIT 91-DA3 (BLACK/ORANGE) FOR OPEN

1Enter the OFF position.

2Disconnect C836 left headlight.

3Measure the resistance between pin 7 of connector C836 left headlight, electrical circuit 91-LE45 (yellow/blue), harness side, and ground.

• Is the resistance less than 2 ohms?

→ Yes

Go to P11

→ No

Using the wiring diagrams, REPAIR the open in circuit 91-DA3 (BK/OG) between splice S118 and ground point G1. Check for proper system operation.

P11: CHECK LIGHT SWITCH

1Disconnect the C320 light switch.

2Check the light switch according to the chapter "Checking the elements" attached to the electrical connection diagrams.

• Is the light switch OK?

→ Yes

Go to P12

→ No

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

P12: CHECKING THE LIGHT SWITCH GROUND CIRCUIT

1Measure the resistance between pin 10 of the light switch connector C320, circuit 31-LE29 (black), harness side, and ground.

• Is the resistance less than 2 ohms?

→ Yes

Using the wiring diagrams, REPAIR the open in circuit 64-LE1 (blue) between the light switch and splice S106. Check for proper system operation.

→ No

Using the wiring diagrams, REPAIR the open in the electrical circuit 31-LE29 (black) and respectively 31-DA2 (black), between the light switch and ground point G14. Check the correct operation of the system.

Q1: CHECKING THE SYSTEM USING WDS

1Enter the OFF position.

2Connect the diagnostic tool.

3Check the system using WDS

• Are there any diagnostic trouble codes (DTCs)?

→ Yes

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

→ No

Go to Q2

Q2: DETERMINE THE STATE IN WHICH THE MALFUNCTION OCCURS.

1Enter the ON position.

2Turn on the low beam headlights.

3Simulate the state of an unloaded and, respectively, fully loaded vehicle.

4Check the adjustment of the xenon headlights.

• Are both xenon headlights not adjustable?

→ Yes

Go to Q9

→ No

Left xenon headlight not adjustable: Go to Q3

The right xenon headlight is not adjusted: Go to Q6

Q3: CHECKING THE VOLTAGE IN THE ELECTRICAL CIRCUIT OF THE LEFT XENON HEADLAMP

1Enter the OFF position.

2Disconnect C836 left xenon headlight.

3Enter the ON position.

4Turn on the low beam headlights.

5Measure the voltage between pin 10 of connector C836 left xenon headlight, circuit 15-XL28A (green/orange), harness side, and ground.

• Is battery voltage registered?

→ Yes

Go to Q4

→ No

Using the wiring diagrams, REPAIR the open in the 15-XL28A (green/orange) circuit between the xenon headlight and splice S114. Check for proper system operation.

Q4: CHECKING THE GROUND CIRCUIT OF THE LEFT XENON HEADLAMP

1Enter the OFF position.

2Measure the resistance between pin 7 of connector C836 left xenon headlight, electrical circuit 91-LE45 (yellow/blue), harness side, and ground.

• Is the resistance less than 2 ohms?

→ Yes

Go to Q5

→ No

Using the wiring diagrams, REPAIR the open in the 91-LE45 (yellow/blue) circuit between the left xenon headlamp and splice S118. Check for proper system operation.

Q5: CHECK CONTROL CIRCUIT 63-LE45 (WHITE) FOR OPEN CIRCUIT

1Disconnect C837 right xenon headlight.

2Measure the resistance between pin 9 of connector C836 of the left xenon headlight, circuit 63-LE45 (white), harness side and pin 9 of connector C837 of the right xenon headlight, circuit 63-LE46 (white/red), harness side.

• Is the resistance less than 2 ohms?

→ Yes

CHECK the xenon headlight, if necessary INSTALL a new one. Check the correct operation of the system.

→ No

Using the wiring diagrams, REPAIR the open in the 63-LE45 (white) circuit between the xenon headlight and splice S105. Check for proper system operation.

Q6: CHECKING THE POWER SUPPLY OF THE RIGHT XENON HEADLIGHT

1Enter the OFF position.

2Disconnect C837 right xenon headlight.

3Enter the ON position.

4Turn on the low beam headlights.

5Measure the voltage between pin 10 of connector C837 right xenon headlight, circuit 15-XL28B (green/orange), harness side, and ground.

• Is battery voltage registered?

→ Yes

Go to Q7

→ No

Using the wiring diagrams, REPAIR the open in the 15-XL28B (green/orange) circuit between the xenon headlight and splice S114. Check for proper system operation.

Q7: CHECKING THE GROUND CIRCUIT OF THE RIGHT XENON HEADLAMP

1Enter the OFF position.

2Measure the resistance between pin 7 of connector C837 right xenon headlight, circuit 91-LE46 (black/blue), harness side, and ground.

• Is the resistance less than 2 ohms?

→ Yes

Go to Q8

→ No

Using the wiring diagrams, REPAIR the open in the 91-LE46 (black/blue) circuit between the right xenon headlamp and splice S118. Check for proper system operation.

Q8: CHECKING CONTROL CIRCUIT 63-LE46 (WHITE-RED) FOR OPEN CIRCUIT

1Disconnect C836 left xenon headlight.

2Measure the resistance between pin 9 of connector C836 of the left xenon headlight, circuit 63-LE45 (white), harness side and pin 9 of connector C837 of the right xenon headlight, circuit 63-LE46 (white/red), harness side.

• Is the resistance less than 2 ohms?

→ Yes

CHECK the xenon headlight, if necessary INSTALL a new one. Check the correct operation of the system.

→ No

Using the wiring diagrams, REPAIR the open in the 63-LE46 (white/red) circuit between the xenon headlight and splice S105. Check for proper system operation.

Q9: CHECKING THE POWER SUPPLY OF THE XENON HEADLAMP CONTROL MODULE/HEADLAMP LEVELING SENSOR

1Enter the OFF position.

2Disconnect C838 Xenon Headlight Control Module/Headlight Leveling Sensor.

3Enter the ON position.

4Turn on the low beam headlights.

5Measure the voltage between pin 6 of the xenon headlight control module/headlight leveling sensor connector C838, circuit 15S-LE19C (GN/BU), harness side and ground.

• Is battery voltage registered?

→ Yes

Go to Q10

→ No

Using the wiring diagrams, REPAIR the open in circuit 15S-LE19C (GREEN/BU) between the xenon headlamp control module/headlamp leveling sensor and splice S134. Check for proper system operation.

Q10: CHECKING THE POWER SUPPLY OF THE XENON HEADLAMP CONTROL MODULE/HEADLAMP LEVELING SENSOR

1Measure the voltage between pin 2 of xenon headlamp control module/headlamp leveling sensor connector C838, circuit 15-XL28C (GN/OG), harness side and ground.

• Is battery voltage registered?

→ Yes

Go to Q13

→ No

Go to Q11

Q11: CHECKING FUSE F53 (CJB)

1Enter the OFF position.

2CHECK Fuse F53 (CJB).

3Check fuse F53 (10A)

• Is the fuse good?

→ Yes

Go to Q12

→ No

INSTALL a new fuse F53 (10A) and CHECK the system for proper operation. If the fuse blows again, LOCATE and REPAIR the short circuit using the wiring diagrams. Check the system for proper operation.

Q12: CHECKING THE VOLTAGE IN FUSE F53 (CJB)

1Connect Fuse F53 (CJB).

2Enter the ON position.

3Measure the voltage between F53 (CJB) and ground.

• Is battery voltage registered?

→ Yes

Using the wiring diagrams, REPAIR the open in circuit 15-XL28C (GN/ORANGE), 15-LG28A (GN/WH), and 15-LG28 (GN/WH) between the xenon headlamp control module/leveling sensor and fuse F53. Check for proper system operation.

→ No

Using the wiring diagrams, LOCATE and REPAIR the electrical circuit supplying fuse F53, CHECK the CJB if necessary and INSTALL a new one. Check the correct operation of the system.

Q13: CHECKING THE GROUND CIRCUIT OF THE XENON HEADLAMP CONTROL MODULE/HEADLAMP LEVELING SENSOR

1Enter the OFF position.

2Measure the resistance between pin 1 of the xenon headlight control module/headlight leveling sensor connector C838, circuit 91-XL31 (BK/BU), harness side and ground.

• Is the resistance less than 2 ohms?

→ Yes

Go to Q14

→ No

Using the wiring diagrams, REPAIR the open in circuit 91-XL31 (BK/BU) between the xenon headlamp control module/headlamp leveling sensor and ground G1. Check for proper system operation.

Q14: CHECKING CONTROL CIRCUIT 63-LE1 (WHITE) FOR OPEN CIRCUIT

1Disconnect C836 left xenon headlight.

2Measure the resistance between pin 7 of the xenon headlight control module/headlight leveling sensor connector C838, circuit 63-LE1 (white), harness side, and pin 9 of the left xenon headlight connector C836, circuit 63-LE45 (white), harness side,.

• Is the resistance less than 2 ohms?

→ Yes

Go to Q15

→ No

Using the wiring diagrams, REPAIR the open in circuit 63-LE1 (white) between the xenon headlamp control module/headlamp leveling sensor and splice S105. Check for proper system operation.

Q15: CHECKING ELECTRICAL CIRCUIT 8-XL10 (WHITE) FOR OPEN

1Enter the OFF position.

2Disconnect C839 rear headlight leveling sensor.

3Measure the resistance between pin 3 of the xenon headlamp control module/headlamp leveling sensor connector C838, circuit 8-XL10 (white), harness side, and pin 4 of the rear headlamp leveling sensor connector C839, circuit 8-XL10 (white), harness side.

• Is the resistance less than 2 ohms?

→ Yes

Go to Q16

→ No

Using the wiring diagrams, REPAIR the open in circuit 8-XL10 (white) between the xenon headlamp control module/headlamp leveling sensor and the rear headlamp leveling sensor. Check for proper system operation.

Q16: CHECKING ELECTRICAL CIRCUIT 7-XL10 (YELLOW) FOR OPEN

1Measure the resistance between pin 8 of the xenon headlamp control module/headlamp leveling sensor connector C838, circuit 7-XL10 (YE), harness side and pin 5 of the rear headlamp leveling sensor connector C839, circuit 7-XL10 (YE), harness side.

• Is the resistance less than 2 ohms?

→ Yes

Go to Q17

→ No

Using the wiring diagrams, REPAIR the open in circuit 7-XL10 (yellow) between the xenon headlamp control module/headlamp leveling sensor and the rear headlamp leveling sensor. Check for proper system operation.

Q17: CHECKING THE GROUND CIRCUIT OF THE REAR HEADLAMP LEVELING SENSOR

1Measure the resistance between pin 1 of the rear headlamp leveling sensor connector C839, circuit 91-XL10 (YE/BU), harness side and ground.

• Is the resistance less than 2 ohms?

→ Yes

Go to Q18

→ No

Using the wiring diagrams, REPAIR open in circuit 91-XL10 (Yellow/Blue) between rear headlamp leveling sensor and splice S118. Check for proper system operation.

Q18: CHECKING THE REAR HEADLAMP LEVELING SENSOR POWER SUPPLY CIRCUIT

1Connect C838 xenon headlight control module/headlight leveling sensor.

2Enter the ON position.

3Turn on the low beam headlights.

4Measure the voltage between pin 5 of the rear headlamp leveling sensor connector C839, circuit 8-XL10 (white), harness side, and ground.

• Is 5V voltage registered?

→ Yes

INSTALL a new rear headlamp leveling sensor. CHECK the system for proper operation.

→ No

INSTALL a new xenon headlamp control module/headlamp leveling sensor. CHECK the system for proper operation.