B1180

Factory Manual References

Factory service manual diagnostic procedure for 2008 acura mdx

A L L Diagnostic Trouble Codes ( DTC )

B1055



DTC B1055: Relay Control Module Lost Communication with MICU (MICU Message)

DTC B1056: Relay Control Module Lost Communication with MICU (ALARM Message)

DTC B1057: Relay Control Module Lost Communication with MICU (DOORSW Message)

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

1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the HDS.

Is DTC B1055, B1056, or B1057 indicated?

YES - Go to step 5.

NO - Intermittent failure, the system is OK at this time. Check for loose or poor connection between the relay control module and the MICU.

5. Check for DTCs with the HDS.

Are DTCs B1055, B1056, B1057, B1157, B1159, B1180, B1255, B1955, B2155, B2156, and B2161 all indicated?

YES - Do the MICU input test. MICU Input Test

NO - Do the relay control module input test. Relay Control Module Input Test

B1056

DTC B1055: Relay Control Module Lost Communication with MICU (MICU Message)

DTC B1056: Relay Control Module Lost Communication with MICU (ALARM Message)

DTC B1057: Relay Control Module Lost Communication with MICU (DOORSW Message)

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

1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the HDS.

Is DTC B1055, B1056, or B1057 indicated?

YES - Go to step 5.

NO - Intermittent failure, the system is OK at this time. Check for loose or poor connection between the relay control module and the MICU.

5. Check for DTCs with the HDS.

Are DTCs B1055, B1056, B1057, B1157, B1159, B1180, B1255, B1955, B2155, B2156, and B2161 all indicated?

YES - Do the MICU input test.

NO - Do the relay control module input test.

Supporting Diagrams & Locations

Reference material from the factory manual for this diagnostic procedure.

Diagram

A/C Leak Detection (B07-025)

Location

CHRYSLER Group LLC

Location

CHRYSLER Group LLC

Location

ACURA

Location

AUDI

Fuse/Relay

Climate Control

Fuse/Relay

CHRYSLER Group LLC

Fuse/Relay

AUDI

Fuse/Relay

BMW

Related Procedures

Procedure

A/C Refrigerant (Compressor) Oil Guide (BJA34004)

Procedure

A/C Refrigerant And Oil Type Guide (BJA1330)

Procedure

A/C Refrigerant Type Guide (BJA11220)

Procedure

A/C Refrigerant Types Guide (BJA09917 VERSION 2)

Procedure

Always Enter Campaign Number On Proof Of Correction Certificate (B13010B)

Procedure

Dead Battery, 2.5 Amp Draw? Check For A Bad Power Seat Switch (100100C)

← Back to 2008 acura mdxBrowse vehicle codesDIY Repair Guides