Under-Hood Fuse/relay Box Acura TL III

Scheme 60

1. Make sure you have the anti-theft codes for the radio and the navigation system, then write down the channels for the XM radio presets. Make sure the ignition switch is OFF.
2. Disconnect the battery negative cable, then disconnect the positive cable, and wait at least 3 minutes.
3. Remove the under-hood multi-relay box from the under-hood fuse/relay box.
4. Remove the screws (A) from the alternator and battery cable terminals.
5. Remove the two mounting bolts (B) from the under-hood fuse/relay box.
6. Remove the under cover from the under-hood fuse/ relay box.
7. Disconnect the connectors from the under-hood fuse/relay box.
8. If replacing the fuse/relay box, carefully remove the relays by prying under the base of the relay. NOTE: Do not use pliers to remove the relays.

Installation

1. Install the relays and connect the connectors to the under-hood fuse/relay box, then install the under-hood fuse/relay box in the reverse order of removal.
2. Install the removed parts in the reverse order of removal.
3. Connect the both positive cable and negative cable to the battery.
4. Enter the anti-theft codes for the radio and navigation system, then enter the customer's XM radio channel presets.
5. Confirm that all systems work properly.

B1055: Relay Control Module lost communication with MICU, B1056: Relay Control Module lost communication with MICU (alarm), B1057: Relay Control Module lost communication with MICU (door switch message), B1058: Relay Control Module lost communication with Door Multiplex Control Unit (door lock switch message), B1059: Relay Control Module lost communication with Door Multiplex Control Unit (panic message), B1060: Relay Control Module lost communication with Gauge Control Module (VSP/NE message), B1061: Relay Control Module lost communication with Gauge Control Module (A/T message), B1062: Relay Control Module lost communication with Combination Switch Control Unit (headlight switch message), B1063: Relay Control Module lost communication with Combination Switch Control Unit (wiper switch message)

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. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF and then back ON (II).
3. Check for DTCs with the HDS. IS DTC B1055, B1056, B1057, B1058, B1059, B1060, B1061, B1062 and/or B1063 indicated? YES - Go to step 4. NO - Intermittent failure, the communication line is OK at this time.
4. Check for DTCs other than those listed at previous step. Are any other DTCs present? YES - Go to step 5. NO - Perform Relay Control Module Input Test (see «RELAY CONTROL MODULE INPUT TEST»(/acura/tl/iii-2003-2006/remont/communication-devices/#multiplex-intergrated-control-system) ).
5. Find the chart that contains at least one retrieved DTC in column A and one retrieved DTC in column B. Perform the input test for the ECU listed in that chart. If no DTC from column B is found, then continue Relay Control Module Input Test (see «RELAY CONTROL MODULE INPUT TEST»(/acura/tl/iii-2003-2006/remont/communication-devices/#multiplex-intergrated-control-system) ).

Chart 1

DTC TROUBLESHOOTING (CHART 1)

Chart 2

DTC TROUBLESHOOTING (CHART 2)

Chart 3

DTC TROUBLESHOOTING (CHART 3)

Chart 4

DTC TROUBLESHOOTING (CHART 4)

See also:
• TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A
• RELAY CONTROL MODULE INPUT TEST
• MICU INPUT TEST
• DOOR MULTIPLEX CONTROL UNIT INPUT TEST