B1078

Factory Manual References

Factory service manual diagnostic procedure for 2009 acura csx

DTC B1078: Daytime Running Lights System Error

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 ).
  1. Turn the ignition switch ON (II).
  2. Pull the parking brake lever.
  3. Clear the DTCs with the HDS.
  4. Release the parking brake lever.
  5. Turn the ignition switch OFF, and then back ON (II).
  6. Check for DTCs with the HDS.

    Is DTC B1078 indicated? 

    YES  -Go to step 7.

    NO  -Intermittent failure. The daytime running lights system is OK at this time. Check for loose or poor connections.

  7. Turn the headlight switch ON (high beam).

    Do both headlights (high beam) come on? 

    YES  -Go to step 8.

    NO  -Go to step  10.

  8. Turn the ignition switch OFF.
  9. Check for voltage between the No. 6 and No. 33 terminals of the under-dash fuse/relay box connector E (42P) and body ground, and between the No. 20 terminal of the under-dash fuse/relay box connector F (34P) and body ground individually.
    Fig 1: Checking Voltage Between 6 And 33 Terminals Of Under-Dash Fuse/Relay Box Connector E (42P) And Body Ground
    G06269309Courtesy of AMERICAN HONDA MOTOR CO., INC.

DTC B1078: Daytime Running Lights System Error

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 ).
  1. Turn the ignition switch ON (II).
  2. Pull the parking brake lever.
  3. Clear the DTCs with the HDS.
  4. Release the parking brake lever.
  5. Turn the ignition switch OFF, and then back ON (II).
  6. Check for DTCs with the HDS.

    Is DTC B1078 indicated? 

    YES  -Go to step 7.

    NO  -Intermittent failure. The daytime running lights system is OK at this time. Check for loose or poor connections.

  7. Turn the headlight switch ON (high beam).

    Do both headlights (high beam) come on? 

    YES  -Go to step 8.

    NO  -Go to step  10.

  8. Turn the ignition switch OFF.
  9. Check for voltage between the No. 6 and No. 33 terminals of the under-dash fuse/relay box connector E (42P) and body ground, and between the No. 20 terminal of the under-dash fuse/relay box connector F (34P) and body ground individually.
    Fig 1: Checking Voltage Between 6 And 33 Terminals Of Under-Dash Fuse/Relay Box Connector E (42P) And Body Ground
    G06269309Courtesy of AMERICAN HONDA MOTOR CO., INC.

DTC B1078: Daytime Running Lights System Error

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 ).
  1. Turn the ignition switch ON (II).
  2. Pull the parking brake lever.
  3. Clear the DTCs with the HDS.
  4. Release the parking brake lever.
  5. Turn the ignition switch OFF, and then back ON (II).
  6. Check for DTCs with the HDS.

    Is DTC B1078 indicated? 

    YES  -Go to step 7.

    NO  -Intermittent failure. The daytime running lights system is OK at this time. Check for loose or poor connections.

  7. Turn the headlight switch ON (high beam).

    Do both headlights (high beam) come on? 

    YES  -Go to step 8.

    NO  -Go to step  10.

  8. Turn the ignition switch OFF.
  9. Check for voltage between the No. 6 and No. 33 terminals of the under-dash fuse/relay box connector E (42P) and body ground, and between the No. 20 terminal of the under-dash fuse/relay box connector F (34P) and body ground individually.
    Fig 1: Checking Voltage Between 6 And 33 Terminals Of Under-Dash Fuse/Relay Box Connector E (42P) And Body Ground
    G06269309Courtesy of AMERICAN HONDA MOTOR CO., INC.

Supporting Diagrams & Locations

Reference material from the factory manual for this diagnostic procedure.

Diagram

Circuit Diagram

Diagram

Circuit Diagram

Diagram

Circuit Diagram

Diagram

Body Controller Area Network (B-CAN) and Fast Controller Area Network (F-CAN)

Diagram

Circuit Diagram

Diagram

Circuit Diagram

Location

Component Location Index

Location

Component Location Index

Location

Component Location Index

Location

Component Location Index

Fuse/Relay

DTC B1026: Front Passenger's Door Lock Switch Signal Error

Fuse/Relay

DTC B1127: Driver's Door Key Cylinder Switch Signal Error

Fuse/Relay

DTC B1128: Driver's Door Lock Switch Signal Error (LOCK/UNLOCK)

Fuse/Relay

DTC B1129: Driver's Door Lock Knob Switch Signal Error (LOCK/UNLOCK)

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