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Honda Ridgeline. Manual - part 469

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DTC B1276:

DTC B1278:

YES
NO

YES

YES
NO

YES

22-172

Exterior Lights

DTC Troubleshooting (cont’d)

Headlight Switch Parking

(SMALL) Position Circuit Malfunction

Headlight Switch ON Position

Circuit Malfunction

NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System
Diagnosis Test Mode A (see page 22-99).

1. Clear the DTCs with the HDS.

2. Turn the ignition switch OFF, and then back ON (II),

and wait for 2 seconds.

3. Turn the parking (SMALL) light switch ON and wait

for 2 seconds.

4. Turn the headlight switch (LOW) ON and wait for

2 seconds.

5. Change the dimmer switch position from low beam

to high beam and wait for 2 seconds.

6. Check for DTCs with the HDS.

Go to step 7.

Intermittent failure, the headlight switch and

the combination switch control unit are OK at this
time. Check for loose or poor connections at the
headlight switch connector, and at the combination
switch connector.

7. With the headlight switch in the PARKING position,

select LIGHTING SYSTEM with the HDS, and enter
DATA LIST.

8. Check the ON/OFF information of the HEADLIGHT

SWITCH PARKING in the DATA LIST.

Faulty combination switch control unit.

Replace the combination switch.

Go to step 9.

9. Do the headlight switch test (see page 22-181).

Repair the wire between the No. 4 terminal of

the headlight switch 6P connector and the No. 9
terminal of the combination switch 12P
connector.

Replace the headlight switch.

NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System
Diagnosis Test Mode A (see page 22-99).

1. Clear the DTCs with the HDS.

2. Turn the ignition switch OFF, and then back ON (II),

and wait for 2 seconds.

3. Turn the parking (SMALL) light switch ON and wait

for 2 seconds.

4. Turn the headlight switch (LOW) ON and wait for

2 seconds.

5. Change the dimmer switch position from low beam

to high beam and wait for 2 seconds.

6. Check for DTCs with the HDS.

Go to step 7.

Intermittent failure, the headlight switch and

the combination switch control unit are OK at this
time. Check for loose or poor connections at the
headlight switch connector, and at the combination
switch connector.

7. With the headlight switch in the HEADLIGHT

position, select LIGHTING SYSTEM with the HDS,
and enter DATA LIST.

8. Check the ON/OFF information of the HEADLIGHT

SWITCH ON in the DATA LIST.

Faulty combination switch control unit.

Replace the combination switch.

Go to step 9.

9. Do the headlight switch test (see page 22-181).

Repair the wire between the No. 3 terminal of

the headlight switch 6P connector and the No. 10
terminal of the combination switch 12P
connector.

Replace the headlight switch.

Is DT C B127 6 indicated?

Is the inf or mation indicator ON, and change to
OF F when the headlight switch is put to the OF F
and the HEADLIGHT positions?

Is the headlight switch test OK ?

Is DT C B127 8 indicated?

Is the inf or mation indicator ON, and change to
OF F when the headlight switch is put to the OF F
and the PARK ING positions?

Is the headlight switch test OK ?

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DTC B1279:

DTC B1280:

YES

22-173

Headlight Switch DIMMER

Position Circuit Malfunction

Turn Signal Switch Circuit

Malfunction

NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System
Diagnosis Test Mode A (see page 22-99).

1. Clear the DTCs with the HDS.

2. Turn the ignition switch OFF and then back ON (II),

then turn the headlight switch ON.

3. Change the dimmer switch from low beam to high

beam and wait for 2 seconds.

4. Pull and hold the dimmer switch lever and keep the

passing switch position for more than 2 seconds.

5. Check for DTCs with the HDS.

Faulty combination switch control unit,

replace the combination switch.

Intermittent failure, the combination switch

control unit is OK at this time. Check for loose or
poor connections at the combination switch
connector.

NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System
Diagnosis Test Mode A (see page 22-99).

1. Clear the DTCs with the HDS.

2. Turn the ignition switch OFF, and then back ON (II).

3. Turn the turn signal switch to the left turn position

and wait for 2 seconds.

4. Turn the turn signal switch to the right turn position

and wait for 2 seconds.

5. Check for DTCs with the HDS.

Faulty combination switch control unit,

replace the combination switch.

Intermittent failure, the combination switch

control unit is OK at this time. Check for loose or
poor connections at the combination switch
connector.

Is DT C B127 9 indicated?

Is DT C B1280 indicated?

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22-174

Exterior Lights

Brake Pedal Position Switch Test

Cargo Area Light Switch Test

Not used

Terminal

Position

OFF

1. Disconnect the 4P connector (A) from the brake

pedal position switch (B).

2. Check for continuity between the No. 1 and No. 2

terminals.

• There should be continuity when the brake pedal

is pressed.

• There should be no continuity when the brake

pedal is released.

3. Check for continuity between the No. 3 and No. 4

terminals.

• There should be no continuity when the brake

pedal is pressed.

• There should be continuity when the brake pedal

is released.

4. If necessary, adjust or replace the switch, or adjust

the pedal height (see page 19-6).

1. Remove the dashboard lower cover (see page

20-83).

2. Push the cargo area light switch (A) from behind

the dashboard lower panel.

3. Check for continuity between the terminals in each

switch position according to the table.

4. If the continuity is not as specified, replace the bulb

(B) or the cargo area light switch.

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22-175

Headlight Adjustment

25 ft (7.5 m)

Headlights become very hot during use; do not
touch them or any attaching hardware immediately
after they have been turned off.

Before adjusting the headlights:

• Park the vehicle on a level surface.
• Make sure the tire pressures are correct.
• The driver or someone who weighs the same should

sit in the driver’s seat.

1. Clean the outer lens so that you can see the center

(A) of the headlights.

2. Park the vehicle in front of a wall or a screen (A).

3. Turn the low beams on.

4. Determine if the headlights are aimed properly.

Vertical adjustment:
Measure the height of the headlights (A). The lights
should reflect 2.1 in (52 mm.) below headlight
height (B).

(cont’d)

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