DTC B11CF: Right Daytime Running Lights Circuit Malfunction

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Clear the DTCs with the HDS.
Turn the ignition switch to LOCK (0).
Release the parking brake lever.
Turn the headlight switch OFF.
Turn the ignition switch to ON (II).
Is DTC B11CF indicated?

YES -Go to step 6.

NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
Turn the headlight high beam ON.
Does the right headlight (high beam) come on?

YES -Go to step 7.

NO -Go to step 9.
Turn the ignition switch to LOCK (0).
Measure the voltage between body ground and passenger's under-dash fuse/relay box connector A (38P) terminals No. 36 and No. 37, and between body ground and passenger's under-dash fuse/relay box connector E (18P) terminals No. 15 and No. 16 individually.
PASSENGERS UNDER-DASH FUSE/RELAY BOX CONNECTOR A (38P)

Fig 1: Identifying Passengers Under-Dash Fuse/Relay Box Connector A (38P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

PASSENGERS UNDER-DASH FUSE/RELAY BOX CONNECTOR E (18P)

Fig 2: Identifying Passengers Under-Dash Fuse/Relay Box Connector E (18P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there 0.2 V or less?

YES -Faulty passenger's MICU; replace the passenger's under-dash fuse/relay box (see INSTALLATION ).

NO -Repair an open or high resistance in the wire or poor ground (G201, G505).
Turn the ignition switch to LOCK (0).
Turn the headlight switch OFF.
Check the No. 1 (10 A) fuse in the passenger's under-dash fuse/relay box.
Is the fuse OK?

YES -Go to step 12.

NO -Replace the fuse. If the fuse blows again, repair the short to ground on the No. 1 (10 A) fuse circuit.
Check the right headlight bulb.
Is the bulb OK?

YES -Go to step 13.

NO -Replace the bulb and recheck.
Disconnect passenger's under-dash fuse/relay box connector E (18P).
Disconnect the right headlight (high beam) 2P connector.
Check for continuity between passenger's under-dash fuse/relay box connector E (18P) terminal No. 2 and right headlight (high beam) 2P connector terminal No. 2.
RIGHT HEADLIGHT (HIGH BEAM) 2P CONNECTOR

Fig 3: Identifying Right Headlight (High Beam) 2P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 16.

NO -Repair an open or high resistance in the wire.
Check for continuity between right headlight (high beam) 2P connector terminal No. 1 and body ground.
RIGHT HEADLIGHT (HIGH BEAM) 2P CONNECTOR

Fig 4: Identifying Right Headlight (High Beam) 2P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Faulty passenger's MICU; replace the passenger's under-dash fuse/relay box (see INSTALLATION ).

NO -Repair an open or high resistance in the wire or poor ground (G201).