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Contents Wiring diagrams Section: Entertainment Systems All sections

Acuralink Acura RDX I

Entertainment Systems 46 illustrations ~8729 words

Scheme 1

Scheme 1: Component Location Index
Scheme 1: Component Location Index

Scheme 2

Scheme 2: How to Check for DTCs with the HDS
Scheme 2: How to Check for DTCs with the HDS
  1. Make sure the ignition switch is in LOCK (0).
  2. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
  3. Turn the ignition switch to ON (II). .
  4. Make sure the HDS communicates with the vehicle and the AcuraLink control unit (XM receiver). If it doesn't, troubleshoot the DLC circuit.
  5. Select XM/HIP in the BODY ELECTRICAL menu.
  6. Select DTCs in the XM/HIP menu
  7. Check for DTCs. If any DTCs are indicated, write down the DTCs, then go to the indicated DTC troubleshooting. If no DTCs are indicated, refer to symptom troubleshooting.

Note. After troubleshooting, clear the DTCs with the HDS. For specific operations, refer to the user's manual that came with the HDS.

DTC Troubleshooting Index

Acuralink Control Unit

DTCDescriptionDTC typeRefer To
B2200Communication bus line error (BUS-OFFLoss of Communication(see DTC B1150: COMMUNICATION BUS LINE ERROR; DTC B1200: COMMUNICATION BUS LINE ERROR; DTC B1750: COMMUNICATION BUS LINE ERROR; DTC B1800: COMMUNICATION BUS LINE ERROR; DTC B1900: COMMUNICATION BUS LINE ERROR; DTC B2200: COMMUNICATION BUS LINE ERROR )
B2204B-CAN communication line errorLoss of Communication(see DTC B2204: B-CAN COMMUNICATION LINE ERROR )
B2205F-CAN communication line errorLoss of Communication(see DTC B2205: F-CAN COMMUNICATION LINE ERROR ).
B2207Navigation unit lost communication with AcuraLink control unit (XM receiver)Loss of Communication(see DTC B2207: NAVIGATION UNIT LOST COMMUNICATION WITH ACURALINK CONTROL UNIT (XM Receiver) ).
B2208Hands FreeLink control unit lost communication with AcuraLink control unit (XM receiver)Loss of Communication(see DTC B2208: HANDSFREELINK CONTROL UNIT LOST COMMUNICATION WITH ACURALINK CONTROL UNIT ).
B2209AcuraLink control unit internal errorInternal error(see DTC B2209: ACURALINK CONTROL UNIT INTERNAL ERROR ).
B2240XM antenna errorInternal error(see DTC B2240: XM ANTENNA ERROR ).

DTC TROUBLESHOOTING INDEX

Symptom Troubleshooting Index

SymptomDiagnostic procedureAlso check for
AcuraLink service application does not workSymptom Troubleshooting (see SYMPTOM TROUBLESHOOTING )Blown fuse No. 23 (10 A) in the under-hood fuse/relay box and No. 35 (7.5 A), No. 10 (7.5 A) in the under-dash fuse/relay box Poor ground at G505
AcuraLink services do not work after replacing the AcuraLink control unit (XM receiver)Navigation System Symptom Troubleshooting (see NAVIGATION CANNOT CONTROL XM RADIO )Call Acura Client Services and request an activation. Call XM customer service and register the replacement AcuraLink control unit (XM receiver).
AcuraLink messages cannot be heard or are weakSymptom Troubleshooting (see ACURALINK MESSAGES CANNOT BE HEARD OR ARE WEAK )

SYMPTOM TROUBLESHOOTING INDEX

System Description

The AcuraLink uses the client's cell phone or XM radio to transmit and receive information about the vehicle. In addition, the AcuraLink system has a Text-To-Speech engine, and will also have the capability to initiate voice or data calls with the HandsFreeLink control unit.

The AcuraLink control unit (HIP) is very similar in design to an XM receiver that has additional communication features. The main functions include

  1. Receiving and playing XM stations. Displaying station, song title and other information on the audio unit using the GA-Net bus.
  2. Receiving XM traffic channel data.
  3. Gives "Feature Guide" tips.
  4. Receiving AcuraLink messages and displaying them in the navi display.
  5. Processing DTC (diagnostic trouble code) error messages from the PCM, the SRS and other systems and displaying them on the navi display.
  6. Sending DTC information to the AcuraLink servers using the client's cell phone (only if the client has set up and enabled this option).

Scheme 3

Scheme 3
Scheme 3

Service Application

  1. Malfunction indicator lamp (MIL) explanation (from server message and vehicle message)
  2. Service information message
  3. Recall Information
  4. Quick tips
  5. Place to provide feedback/view cautions that were not available when vehicle was initially sold
  6. Correction of address and full name that is registered
  7. Real time traffic information
  8. Maintenance information message
  9. Feature guide (90 days)

The AcuraLink Satellite Communication System displays and stores these types of messages on the navigation system display screen

  1. Feature Guide info
  2. System malfunction info
  3. Driver warnings
  4. Quick tips

Note. To delete any stored AcuraLink messages, follow these procedures. The first procedure is for your client. It lets him or her delete just certain types of messages. The second procedure is for service techs only. It lets you delete all stored messages. Some Important Words: The diagnostic menu includes a DATA RESET function. Select this only at TQI and when the vehicle changes ownership. It deletes all AcuraLink messages, log data, and AcuraLink registration. If you select DATA RESET during the 45-day activation period, the AcuraLink Feature Guide repeats the first message. AcuraLink messages related to a repair should be deleted after that repair is done. If you don't delete these messages, they stay in your client's AcuraLink message log.

Message Delete Procedure

Client

Scheme 4

Scheme 4: Message Delete Procedure
Scheme 4: Message Delete Procedure

Scheme 5

Scheme 5
Scheme 5
  1. Turn the ignition switch to ON (II).
  2. Touch OK on the disclaimer screen.
  3. Press the INFO button to bring up the Information screen.
  4. Use the interface dial to select #1 All Messages.
  5. Select the item number you want to delete, then select Delete. (If you don't see Delete on the display screen, you can't remove this message.)
  6. Select Yes to confirm your choice. Service Tech Only
  7. Turn the ignition switch to ON (II).
  8. Touch OK on the disclaimer screen.
  9. Press MAP/GAUGE, MENU and CANCEL buttons for 3 seconds, or connect the SCS service connector to the navigation service connector located in the trunk and the self-diagnostic mode begins. Then using the interface dial, select the Self-Diagnosis Mode or Detail Information & Setting from the Select Diagnosis Items.
  10. Using the interface dial, select XM (HIP) from the Select Diagnosis Items or Detail information & Setting. Press the interface dial. Select XM (HIP) ECU.
  11. Select Diagnostic Info.
  12. Select the item you want to delete. After the message and date come up, select Delete.
  13. Select Yes to confirm your choice.
  14. Repeat step 12 and step 13 for each message you want to delete.

Scheme 6

Scheme 6: AcuraLink Control Unit (XM Receiver) Connector for Inputs and Outputs (With AcuraLink)
Scheme 6: AcuraLink Control Unit (XM Receiver) Connector for Inputs and Outputs (With AcuraLink)

Scheme 7

Scheme 7: ACURALINK CONTROL UNIT (XM RECEIVER) CONNECTOR A (20P)
Scheme 7: ACURALINK CONTROL UNIT (XM RECEIVER) CONNECTOR A (20P)
CavityWireConnects to
A1GRNN0.23 (10A) fuse in the under-hood fuse/relay box (+B)
A2PURN0.35 (7.5A) fuse in the under-hood fuse/relay box (ACC)
A3GRNNavigation unit (NAVI COMM 3)
A4REDNavigation unit (NAVI COMM 1
A6WHTCommunication bus line (CAN HI)
A7LT BLUAudio unit ,Navigation display unit (GA-NET BUS+)
A8GRYAudio unit (AUDIO SH)
A9BLKAudio unit (AUDIO L+)
A10REDAudio unit (AUDIO R+)
A11BLKGround (GND) (G505)
A12BRNN0.10 (7.5A) fuse in the under-hood fuse/relay box (IG1))
A13BLKNavigation unit (NAVI COMM 4)
A14WHTNavigation unit (NAVI COMM 2)
A15GRY *Navigation unit (NAVI COMM SH)
A16REDCommunication bus line (CAN LO)
A17PURAudio unit, Navigation display unit (GA-NET BUS -)
A18GRYAudio unit, Navigation display unit (GA-NET BUS SH)
A19GRNAudio unit,Navigation display unit (AUDIO L-)
A20WHTAudio unit, Navigation display unit (AUDIO R-)
() * : The shielded wires have a heart-shrink tube insulating the outside of the wire. The color of the insulating tube, typically black or dark gray, may not match the color of the wire shown on the circuit diagram.
()* : The shielded wires have a heart-shrink tube insulating the outside of the wire. The color of the insulating tube, typically black or dark gray, may not match the color of the wire shown on the circuit diagram.

ACURALINK CONTROL UNIT (XM RECEIVER) CONNECTOR A (20P)

Scheme 8

Scheme 8: ACURALINK CONTROL UNIT (XM RECEIVER) CONNECTOR B (16P)
Scheme 8: ACURALINK CONTROL UNIT (XM RECEIVER) CONNECTOR B (16P)
CavityWireConnects to
B2GRYAudio unit , HandsFreeLink control unit (TELM SIG SH)
B3GRNAudio unit , HandsFreeLink control unit (TELM SIG +)
B4PURAudio unit (HIP MUTE)
B5PNKCommunication bus line (B-CAN)
B6GRYHandsfreeLink control unit (HFL COMM SH)
B7WHTHandsfreeLink control unit (HFL COMM 3)
B8GRNHandsfreeLink control unit (HFL COMM 1)
B11REDAudio unit, HandsFreeLink control unit (TELMSIG-)
B15REDHandsFreeLink Control Unit (HFL COMM 4)
B16BLKHandsFreeLink Control Unit (HFL COMM 2)
() * : The shielded wires have a heart-shrink tube insulating the outside of the wire. The color of the insulating tube, typically black or dark gray, may not match the color of the wire shown on the circuit diagram.
()* : The shielded wires have a heart-shrink tube insulating the outside of the wire. The color of the insulating tube, typically black or dark gray, may not match the color of the wire shown on the circuit diagram.

ACURALINK CONTROL UNIT (XM RECEIVER) CONNECTOR B (16P)

Scheme 9

Scheme 9: ACURALINK CONTROL UNIT (XM RECEIVER) CONNECTOR C (2P)
Scheme 9: ACURALINK CONTROL UNIT (XM RECEIVER) CONNECTOR C (2P)
CavityWireConnects to
C1AM/FM/XM antenna (SAT/TER)
C2AM/FM/XM antenna (SAT/TER SH)

ACURALINK CONTROL UNIT (XM RECEIVER) CONNECTOR C (2P)

Self-diagnostic Function

Note. Only select "DATA RESET" from the "XM (HIP) ECU" screen when instructed. Selecting "DATA RESET" will clear the AcuraLink registration, and the AcuraLink service will reset to the factory default. If the vehicle was already registered for the AcuraLink service, it will have to be reactivated by calling Acura Client Services before all features will be available.

The AcuraLink control unit (XM receiver) has a self-diagnostic function. To run the self-diagnostic function, do the following

How to Enter the Self-diagnostic Function

Note. Always check for and repair any CAN DTCs before troubleshooting the AcuraLink system.

Scheme 10

Scheme 10: How to Enter the Self-diagnostic Function
Scheme 10: How to Enter the Self-diagnostic Function

Scheme 11

Scheme 11
Scheme 11

Scheme 12

Scheme 12
Scheme 12

Scheme 13

Scheme 13
Scheme 13
  1. Turn the ignition switch to ON (II).
  2. Press the interface dial.
  3. Press and hold the MAP/GUIDE, CANCEL, and MENU buttons at the same time for 3 seconds more, and the self-diagnosis begins.
  4. Using the interface dial, select the "NAVI System" from the "Select Diagnosis Items". Press the interface dial. The display indicates "NAVI System Link", and will do a Navi connection check for each device. If a connection is faulty, the place where it is faulty will be indicated with "NG" (red color). If the "XM (HIP)" indicator is "NG" (red color), go to step 5.
  5. Using the interface dial, select "Return" from the "Navi System Link". Press the interface dial.
  6. Using the interface dial, select the "XM (HIP)" from the "Select Diagnosis Items". Press the interface dial.
  7. Using the interface dial, select the "XM (HIP) System Link" from the "XM (HIP)". Press the interface dial. The display indicates "XM (HIP) System Link", and will do an AcuraLink connection check for each device. If a connection is faulty, the place where it is faulty will be indicated with "NG" (red color). Connection OK: Green color Connection NG: Red color
  8. When a red color is indicated, check the continuity between the AcuraLink control unit (XM receiver) and the device indicated in red. PROBLEM SYMPTOMS CHART Device indicated in red Test condition Test: Desired result Possible cause if result is not obtained F-CAN AcuraLink control unit (XM receiver) connector A (20P) and SH-AWD control unit connector A (20P) disconnected Check for continuity between the No. 6 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 10 terminal of the SH-AWD control unit connector A (20P): There should be continuity. An open in the wire Check for continuity between the No. 16 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 20 terminal of the SH-AWD control unit connector A (20P): There should be continuity. An open in the wire AcuraLink control unit (XM receiver) connector A (20P) and PCM connector A (44P) disconnected Check for continuity between the No. 6 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 36 terminal of the PCM connector A (44P): There should be continuity. An open in the wire Check for continuity between the No. 16 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 37 terminal of the PCM connector A (44P): There should be continuity. An open in the wire AcuraLink control unit (XM receiver) connector A (20P) and gauge control module 36P connector disconnected Check for continuity between the No. 6 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 28 terminal of the gauge control module 36P connector: There should be continuity. An open in the wire Check for continuity between the No. 16 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 29 terminal of the gauge control module 36P connector: There should be continuity. An open in the wire AcuraLink control unit (XM receiver) connector A (20P) and TPMS control unit 20P connector disconnected Check for continuity between the No. 6 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 1 terminal of the TPMS control unit 20P connector: There should be continuity. An open in the wire Check for continuity between the No. 16 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 10 terminal of the TPMS control unit 20P connector: There should be continuity. An open in the wire AcuraLink control unit (XM receiver) connector A (20P) and navigation unit connector A (20P) disconnected Check for continuity between the No. 6 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 8 terminal of the navigation unit connector A (20P): There should be continuity. An open in the wire Check for continuity between the No. 16 terminal of AcuraLink control unit (XM receiver) connector A(20P) and the No. 18 terminal of the navigation unit connector A (20P): There should be continuity. An open in the wire F-CAN AcuraLink control unit (XM receiver) connector A (20P) and VSA modulator-control unit 46P connector disconnected Check for continuity between the No. 6 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 29 terminal of the VSA modulator-control unit 46P connector: There should be continuity. An open in the wire Check for continuity between the No. 16 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 30 terminal of the VSA modulator-control unit 46P connector: There should be continuity. An open in the wire AcuraLink control unit (XM receiver) connector A (20P) and SRS unit connector A (28P) disconnected Check for continuity between the No. 6 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 11 terminal of the SRS unit connector A (28P): There should be continuity. Check for continuity between the No. 16 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 12 terminal of the SRS unit connector A (28P): There should be continuity. AcuraLink control unit (XM receiver) connector A (20P), SH-AWD control unit connector A (20P), PCM connector A (44P), gauge control module 36P connector, TPMS control unit 20P connector, VSA modulator-control unit 46P connector, SRS unit connector A (28P) and navigation unit connector A (20P) disconnected Check for continuity between the No. 6, No. 16 terminals of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the wire Check for continuity between the No. 1 and No. 6 terminals of AcuraLink control unit (XM receiver) connector A (20P): There should be no continuity. A short in the wire Check for continuity between the No. 1 and No. 16 terminals of AcuraLink control unit (XM receiver) connector A (20P): There should be no continuity. A short in the wire SH-AWD control unit connector A (20P), PCM connector A (44P), gauge control module 36P connector, TPMS control unit 20P connector, VSA modulator-control unit 46P connector, SRS unit connector A (28P) and navigation unit connector A (20P) disconnected Check for continuity between the No. 6, No. 16 terminals of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the AcuraLink control unit (XM receiver) AcuraLink control unit (XM receiver) connector A (20P), PCM connector A (44P), gauge control module 36P connector, TPMS control unit 20P connector, VSA modulator-control unit 46P connector, SRS unit connector A (28P) and navigation unit connector A (20P) disconnected Check for continuity between the No. 6, No. 16 terminals of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the SH-AWD control unit AcuraLink control unit (XM receiver) connector A (20P), SH-AWD control unit connector A (20P), gauge control module 36P connector, TPMS control unit 20P connector, VSA modulator-control unit 46P connector, SRS unit connector A (28P) and navigation unit connector A (20P) disconnected Check for continuity between the No. 6, No. 16 terminals of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the PCM F-CAN AcuraLink control unit (XM receiver) connector A (20P), SH-AWD control unit connector A (20P), PCM connector A (44P), TPMS control unit 20P connector, VSA modulator-control unit 46P connector, SRS unit connector A (28P) and navigation unit connector A (20P) disconnected Check for continuity between the No. 6, No. 16 terminals of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the gauge control module AcuraLink control unit (XM receiver) connector A (20P), SH-AWD control unit connector A (20P), PCM connector A (44P), gauge control module 36P connector, VSA modulator-control unit 46P connector, SRS unit connector A (28P) and navigation unit connector A (20P) disconnected Check for continuity between the No. 6, No. 16 terminals of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the TPMS control unit AcuraLink control unit (XM receiver) connector A (20P), SH-AWD control unit connector A (20P), PCM connector A (44P), gauge control module 36P connector, TPMS control unit 20P connector, SRS unit connector A (28P) and navigation unit connector A (20P) disconnected Check for continuity between the No. 6, No. 16 terminals of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the VSA modulator-control unit AcuraLink control unit (XM receiver) connector A (20P), SH-AWD control unit connector A (20P), PCM connector A (44P), gauge control module 36P connector, TPMS control unit 20P connector, VSA modulator-control unit 46P connector, and navigation unit connector A (20P) disconnected Check for continuity between the No. 6, No. 16 terminals of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the SRS unit AcuraLink control unit (XM receiver) connector A (20P), SH-AWD control unit connector A (20P), PCM connector A (44P), gauge control module 36P connector, TPMS control unit 20P connector, VSA modulator-control unit 46P connector, and SRS unit connector A (28P) disconnected Check for continuity between the No. 6, No. 16 terminals of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the navigation unit B-CAN AcuraLink control unit (XM receiver) connector B (16P) and gauge control module 36P connector disconnected Check for continuity between the No. 5 terminal of AcuraLink control unit (XM receiver) connector B (16P) and the No. 30 terminal of the gauge control module 36P connector: There should be continuity. An open in the wire AcuraLink control unit (XM receiver) connector B (16P) and immobilizer-keyless control unit 7P connector disconnected Check for continuity between the No. 5 terminal of AcuraLink control unit (XM receiver) connector B (16P) and the No. 4 terminal of the immobilizer-keyless control unit 7P connector: There should be continuity. An open in the wire AcuraLink control unit (XM receiver) connector B (16P) and under-dash fuse/relay box connector Q (16P) disconnected Check for continuity between the No. 5 terminal of AcuraLink control unit (XM receiver) connector B (16P) and the No. 6 terminal of the under-dash fuse/relay box connector Q (16P) disconnected: There should be continuity. An open in the wire AcuraLink control unit (XM receiver) connector B (16P) and climate control unit connector B (T6P) disconnected Check for continuity between the No. 5 terminal of AcuraLink control unit (XM receiver) connector B (16P) and the No. 8 terminal of the climate control unit connector B (16P): There should be continuity. An open in the wire AcuraLink control unit (XM receiver) connector B (16P) and HandsFreeLink control unit 22P connector disconnected Check for continuity between the No. 5 terminal of AcuraLink control unit (XM receiver) connector B(16P)and the No. 14 terminal of the HandsFreeLink control unit 22P connector: There should be continuity. An open in the wire AcuraLink control unit (XM receiver) connector B (16P), under-dash fuse/ relay box connector Q (16P), gauge control module 36P connector, immobilizer-keyless control unit 7P connector, HandsFreeLink control unit 22P connector, and climate control unit connector B (16P) disconnected Check for continuity between the No. 5 terminal of AcuraLink control unit (XM receiver) connector B (16P) and body ground: There should be no continuity. A open in the wire Check for continuity between the No. 5 terminal of AcuraLink control unit (XM receiver) connector B (16P) and the No. 1 terminal of the AcuraLink control unit (XM receiver) unit connector A (20P): There should be no continuity. A open in the wire Under-dash fuse/relay box connector Q (16P), gauge control module 36P connector, immobilizer-keyless control unit 7P connector, HandsFreeLink control unit 22P connector, and climate control unit connector B (16P) disconnected Check for continuity between the No. 5 terminals of AcuraLink control unit (XM receiver) connector B (16P) and body ground: There should be no continuity. A short in the AcuraLink control unit (XM receiver) AcuraLink control unit (XM receiver) connector B (16P), gauge control module 36P connector, immobilizer-keyless control unit 7P connector, HandsFreeLink control unit 22P connector, and climate control unit connector B (16P) disconnected Check for continuity between the No. 5 terminals of AcuraLink control unit (XM receiver) connector B (16P) and body ground: There should be no continuity. A short in the under-dash fuse/relay box B-CAN AcuraLink control unit (XM receiver) connector B (16P), under-dash fuse/ relay box connector Q (16P), immobilizer-keyless control unit 7P connector, HandsFreeLink control unit 22P connector, and climate control unit connector B (16P) disconnected > Check for continuity between the No. 5 terminals of AcuraLink control unit (XM receiver) connector B (16P) and body ground: There should be no continuity. A short in the gauge control module AcuraLink control unit (XM receiver) connector B (16P), under-dash fuse/ relay box connector Q.(16P), gauge control module 36P connector, HandsFreeLink control unit 22P connector, and climate control unit connector B (16P) disconnected Check for continuity between the No. 5 terminals of AcuraLink control unit (XM receiver) connector B (16P) and body ground: There should be no continuity. A short in the immobilizer-keyless control unit AcuraLink control unit (XM receiver) connector B (16P), under-dash fuse/ relay box connector Q (16P), gauge control module 36P connector, immobilizer-keyless control unit 7P connector, and climate control unit connector B (16P) disconnected Check for continuity between the No. 5 terminals of AcuraLink control unit (XM receiver) connector B (16P) and body ground: There should be no continuity. A short in the HandsFreeLink control unit AcuraLink control unit (XM receiver) connector B (16P), under-dash fuse/ relay box connector Q (16P), gauge control module 36P connector, immobilizer-keyless control unit 7P connector, and HandsFreeLink control unit 22P connector disconnected Check for continuity between the No. 5 terminals of AcuraLink control unit (XM receiver) connector B (16P) and body ground: There should be no continuity. A short in the climate control unit Navi AcuraLink control unit (XM receiver) connector A (20P) and navigation unit connector F (5P) disconnected Check for continuity between the No. 3 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 1 terminal of the navigation unit connector F (5P): There should be continuity. An open in the wire Check for continuity between the No. 13 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 2 terminal of the navigation unit connector F (5P): There should be continuity. An open in the wire Check for continuity between the No. 4 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 3 terminal of the navigation unit connector F (5P): There should be continuity. An open in the wire Check for continuity between the No. 14 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 4 terminal of the navigation unit connector F (5P): There should be continuity. An open in the wire Check for continuity between the No. 3 terminal of AcuraLink control unit (XM receiver) connector A (20P) and body ground-There should be no continuity. A short in the wire Check for continuity between the No. 1 and No. 3 terminals of AcuraLink control unit (XM receiver) connector A (20P): There should be no continuity. A short to power in the wire Check for continuity between the No. 13 terminal of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the wire Check for continuity between the No. 1 and No. 13 terminals of AcuraLink control unit (XM receiver) connector A (20P): There should be no continuity. A short to power in the wire Check for continuity between the No. 4 terminal of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the wire Check for continuity between the No. 1 and No. 4 terminals of AcuraLink control unit (XM receiver) connector A (20P): There should be no continuity. A short to power in the wire Check for continuity between the No. 14 terminal of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the wire Check for continuity between the No. 1 and No. 14 terminals of AcuraLink control unit (XM receiver) connector A (20P): There should be no continuity. A short to power in the wire Navi Navigation unit connector F (5P) disconnected Check for continuity between the No. 3 terminal of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the AcuraLink control unit (XM receiver) Check for continuity between the No. 13 terminal of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the AcuraLink control unit (XM receiver) Check for continuity between the No. 4 terminal of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the AcuraLink control unit (XM receiver) Check for continuity between the No. 14 terminal of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the AcuraLink control unit (XM receiver) AcuraLink control unit (XM receiver) connector A (20P) disconnected Check for continuity between the No. 3 terminal of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the navigation unit Check for continuity between the No. 13 terminal of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the navigation unit Check for continuity between the No. 4 terminal of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the navigation unit Check for continuity between the No. 14 terminal of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the navigation unit HFL AcuraLink control unit (XM receiver) connector B (16P) and HandsFreeLink control unit 22P connector disconnected Check for continuity between the No. 8 terminal of AcuraLink control unit (XM receiver) connector B (16P) and the No. 16 terminal of the HandsFreeLink control unit 22P connector: There should be continuity. An open in the wire Check for continuity between the No. 16 terminal of AcuraLink control unit (XM receiver) connector B(16P)and the No. 17 terminal of the HandsFreeLink control unit 22P connector: There should be continuity. An open in the wire Check for continuity between the No. 7 terminal of AcuraLink control unit (XM receiver) connector B (16P) and the No. 5 terminal of the HandsFreeLink control unit 22P connector: There should be continuity. An open in the wire Check for continuity between the No. 15 terminal of AcuraLink control unit (XM receiver) connector B(16P) and the No. 15 terminal of the HandsFreeLink control unit 22P connector: There should be continuity. An open in the wire HFL AcuraLink control unit (XM receiver) connector B (16P) and HandsFreeLink control unit 22P connector disconnected Check for continuity between the No. 8 terminal of AcuraLink control unit (XM receiver) connector B (16P) and body ground: There should be no continuity. A short in the wire Check for continuity between the No. 1 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 8 terminal of the AcuraLink control unit (XM receiver) connector B (16P): There should be no continuity. A short to power in the wire Check for continuity between the No. 16 terminal of AcuraLink control unit (XM receiver) connector B (16P) and body ground: There should be no continuity. A short in the wire Check for continuity between the No. 1 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 16 terminal of the AcuraLink control unit (XM receiver) connector B (16P): There should be no continuity. A short to power in the wire Check for continuity between the No. 7 terminal of AcuraLink control unit (XM receiver) connector B (16P) and body ground: There should be no continuity. A short in the wire Check for continuity between the No. 1 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 7 terminal of the AcuraLink control unit (XM receiver) connector B (16P): There should be no continuity. A short to power in the wire Check for continuity between the No. 15 terminal of AcuraLink control unit (XM receiver) connector B (16P) and body ground: There should be no continuity. A short in the wire Check for continuity between the No. 1 terminal of AcuraLink control unit (XM receiver) connector A(20P) and the No. 15 terminal of the AcuraLink control unit (XM receiver) connector B (16P): There should be no continuity. A short to power in the wire HandsFreeLink control unit 22P connector disconnected Check for continuity between the No. 8 terminal of AcuraLink control unit (XM receiver) connector B (16P) and body ground: There should be no continuity. A short in the AcuraLink control unit (XM receiver) Check for continuity between the No. 16 terminal of AcuraLink control unit (XM receiver) connector B (16P) and body ground: There should be no continuity. A short in the AcuraLink control unit (XM receiver) Check for continuity between the No. 7 terminal of AcuraLink control unit (XM receiver) connector B (16P) and body ground: There should be no continuity. A short in the AcuraLink control unit (XM receiver) Check for continuity between the No. 15 terminal of AcuraLink control unit (XM receiver) connector B (16P) and body ground: There should be no continuity. A short in the AcuraLink control unit (XM receiver) AcuraLink control unit (XM receiver) connector A (20P) disconnected Check for continuity between the No. 8 terminal of AcuraLink control unit (XM receiver) connector B (16P) and body ground: There should be no continuity. A short in the HandsFreeLink control unit Check for continuity between the No. 16 terminal of AcuraLink control unit (XM receiver) connector B (16P) and body ground: There should be no continuity. A short in the HandsFreeLink control unit Check for continuity between the No. 7 terminal of AcuraLink control unit (XM receiver) connector B (16P) and body ground: There should be no continuity. A short in the HandsFreeLink control unit Check for continuity between the No. 15 terminal of AcuraLink control unit (XM receiver) connector B (16P) and body ground: There should be no continuity. A short in the HandsFreeLink control unit Audio AcuraLink control unit (XM receiver) connector A (20P) and audio unit connector B (14P) disconnected Check for continuity between the No. 7 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 9 terminal of the audio unit connector B (HP): There should be continuity. An open in the wire Check for continuity between the No. 17 terminal of AcuraLink control unit (XM receiver) connector A (20P) and the No. 10 terminal of the audio unit connector B (14P): There should be continuity. An open in the wire Check for continuity between the No. 7 terminal of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the wire Check for continuity between the No. 1 and No. 7 terminals of AcuraLink control unit (XM receiver) connector A (20P): There should be no continuity. A short to power in the wire Check for continuity between the No. 17 terminal of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the wire Check for continuity between the No. 1 and No. 17 terminals of AcuraLink control unit (XM receiver) connector A (20P): There should be no continuity. A short to power in the wire Audio unit connector 8 (14P) disconnected Check for continuity between the No. 7 terminal of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the AcuraLink control unit (XM receiver) Check for continuity between the No. 17 terminal of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the AcuraLink control unit (XM receiver) AcuraLink control unit (XM receiver) connector A (20P) disconnected Check for continuity between the No. 7 terminal of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the audio unit Check for continuity between the No. 17 terminal of AcuraLink control unit (XM receiver) connector A (20P) and body ground: There should be no continuity. A short in the audio unit. NOTE: If the XM antenna connection condition is faulty, "XM ANTENNA" will be indicated on the audio-H VAC sub display unit.
  9. If the indication does not go away, confirm DTCs, and refer to the relevant system troubleshooting and input tests.

Canceling the Self-diagnostic Function

  1. Use the interface dial, select the "Exit Diag". Press the interface dial to cancel the self-diagnostic function.

Scheme 14

Scheme 14: Circuit Diagram
Scheme 14: Circuit Diagram

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Scheme 16

DTC B2204: B-CAN Communication Line 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. Connect the HDS to the DLC (see «GENERAL TROUBLESHOOTING INFORMATION»(/acura/rdx/i-2006-2009/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems) ).
  2. Turn the ignition switch to ON (II).
  3. Check for DTCs with the HDS and DTC log data in the navigation system diagnostic mode (see «SYSTEM DIAGNOSTIC MODE»(/acura/rdx/i-2006-2009/remont/navigation-system/#navigation-system) ). Is DTC B2204 indicated with HDS and on the navigation display? YES -Go to step 4. NO -Intermittent failure, B-CAN communication line is OK at this time. Check for poor connections or loose terminals at the AcuraLink control unit (XM receiver).
  4. Turn the ignition switch to LOCK (0).
  5. Disconnect AcuraLink control unit (XM receiver) connector B (16P) and the gauge control module 36P connector.
  6. Check for continuity between AcuraLink control unit (XM receiver) connector B (16P) No. 5 terminal and gauge control module 36P connector No. 30 terminal.

Scheme 17

Scheme 17
Scheme 17

Is there continuity?

YES -Check for poor connections or loose terminals at the AcuraLink control unit (XM receiver). If all connections are OK, update the AcuraLink control unit if it does not have the latest software, then recheck. If the software is the latest, replace the AcuraLink control unit (see ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION ).

NO -Repair open in the wire between AcuraLink control unit (XM receiver) and the gauge control module.

DTC B2205: F-CAN Communication Line 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. Connect the HDS to the DLC (see «GENERAL TROUBLESHOOTING INFORMATION»(/acura/rdx/i-2006-2009/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems) ).
  2. Turn the ignition switch to ON (II).
  3. Check for DTCs with the HDS and DTC log data in the navigation system diagnostic mode (see «SYSTEM DIAGNOSTIC MODE»(/acura/rdx/i-2006-2009/remont/navigation-system/#navigation-system) ). Is DTC B2205 indicated with HDS and on the navigation display? YES -Go to step 4. NO -Intermittent failure, F-CAN communication line is OK at this time. Check for poor connections or loose terminals at the AcuraLink control unit (XM receiver).
  4. Turn the ignition switch to LOCK (0).
  5. Disconnect AcuraLink control unit (XM receiver) connector A (20P) and the gauge control module 36P connector.
  6. Check for continuity between AcuraLink control unit (XM receiver) connector A (20P) No. 6, No. 16 terminals and gauge control module 36P connector No. 28, No. 29 terminals individually.

Scheme 18

Scheme 18
Scheme 18

Is there continuity?

YES -Check for poor connections or loose terminals at the AcuraLink control unit (XM receiver). If all connections are OK, update the AcuraLink control unit if it does not have the latest software, then recheck. If the software is the latest, replace the AcuraLink control unit (see SYSTEM DESCRIPTION ).

NO -Repair open in the wire between the AcuraLink control unit (XM receiver) and the gauge control module.

Scheme 19

Scheme 19: DTC B2207: Navigation Unit Lost Communication with AcuraLink Control Unit (XM Receiver)
Scheme 19: DTC B2207: Navigation Unit Lost Communication with AcuraLink Control Unit (XM Receiver)

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Scheme 22
  1. Connect the HDS to the DLC (see «GENERAL TROUBLESHOOTING INFORMATION»(/acura/rdx/i-2006-2009/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems) ).
  2. Clear the DTC with the HDS.
  3. Turn the ignition switch to LOCK (0), then turn it to ON (II) and wait 30 seconds or more.
  4. Check for DTC with the HDS. Is DTC B2207, B2208 indicated? YES -Check the battery condition (see «BATTERY TEST»(/acura/rdx/i-2006-2009/remont/body-electrical/#battery) ). If the system is OK, replace the AcuraLink control unit (XM receiver). NO - If only B2207 is indicated, go to step 5. If only B2208 is indicated, refer to the «B2208 TROUBLESHOOTING»(/acura/rdx/i-2006-2009/remont/entertainment-systems/#acuralink) .
  5. Turn the ignition switch to LOCK (0).
  6. Disconnect AcuraLink control unit (XM receiver) connector A (20P) and navigation unit connector F (5P).
  7. Check for continuity between the following terminals of AcuraLink control unit (XM receiver) connector A (20P) and navigation unit connector F (5P). ACURALINK CONTROL UNIT (XM RECEIVER) CONNECTOR A (20P) AcuraLink control unit (XM receiver) connector Navigation unit connector Wire color A3 F1 GRN A4 F3 RED A13 F2 BLK A14 F4 WHT A15 F5 GRY Is there continuity? YES -Go to step 8. NO -Repair open in the wire(s) between the AcuraLink control unit (XM receiver) and the navigation unit.
  8. Check for continuity between body ground and AcuraLink control unit (XM receiver) connector A (20P) No. 3, No. 4, No. 13, and No. 14 terminals individually. Is there continuity? YES -Repair short to body ground in the wire(s) between the AcuraLink control unit (XM receiver) and the navigation unit. NO -Go to step 9 .
  9. Check for continuity between the terminals of AcuraLink control unit (XM receiver) connector A (20P) as follows. CONNECTOR REFERENCE From terminal To terminals A3 A4, A13, A14, A15 A4 A13, A14, A15 A13 A14, A15 A14 A15 Is there continuity between any of the terminals? YES -Repair short in the wire(s) between the AcuraLink control unit (XM receiver) and navigation unit (replace the appropriate shielded harness). NO -Go to step 10.
  10. Turn the ignition switch ON (II), and check the same terminals for voltage. Is there any voltage? YES -Repair short to power in the wire(s) between the AcuraLink control unit (XM receiver) and the navigation unit. NO -Go to step 11.
  11. Turn the ignition switch to LOCK (0).
  12. Reconnect AcuraLink control unit (XM receiver) connector A (20P).
  13. Reconnect navigation unit connector F (5P).
  14. Turn the ignition switch to ON (II).
  15. Measure the voltage between the body ground and AcuraLink control unit (XM receiver) connector A (20P) No. 3, No. 4 terminals individually.

Is there less than about 3.5 V?

YES -AcuraLink control unit (XM receiver) is faulty, replace the AcuraLink control unit (XM receiver) (see ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION ).

NO -Navigation unit is faulty, replace the navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ).

Scheme 23

Scheme 23: DTC B2208: HandsFreeLink Control Unit Lost Communication with AcuraLink Control Unit
Scheme 23: DTC B2208: HandsFreeLink Control Unit Lost Communication with AcuraLink Control Unit

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  1. Connect the HDS to the DLC (see «GENERAL TROUBLESHOOTING INFORMATION»(/acura/rdx/i-2006-2009/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems) ).
  2. Clear the DTC with the HDS.
  3. Turn the ignition switch to LOCK (0), then turn it to ON (II) and wait 30 seconds or more.
  4. Check for DTC with the HDS. Is DTC B2207, B2208 indicated? YES -Check the battery condition (see «BATTERY TEST»(/acura/rdx/i-2006-2009/remont/body-electrical/#battery) ). If the system is OK, update the AcuraLink control unit if it does not have the latest software, then recheck. If the software is the latest, replace the AcuraLink control unit (see «ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION»(/acura/rdx/i-2006-2009/remont/entertainment-systems/#audio-system) ). NO - If only B2208 is indicated, go to step 5. If only B2207 is indicated, refer to the «B2207 TROUBLESHOOTING»(/acura/rdx/i-2006-2009/remont/entertainment-systems/#acuralink) .
  5. Turn the ignition switch to LOCK (0).
  6. Disconnect AcuraLink control unit (XM receiver) connector B (16P) and the HandsFreeLink control unit 22P connector.
  7. Check for continuity between the AcuraLink control unit (XM receiver) connector B (16P) and the HandsFreeLink control unit 22P connector according to the table. CONNECTOR REFERENCE AcuraLink control unit connector HandsFreeLink control unit connector Wire color B6 18 GRY B7 5 WHT B8 16 GRN B15 15 RED B16 17 BLK Is there continuity? YES -Go to step 8. NO -Repair open in the wire(s) between the AcuraLink control unit (XM receiver) and the HandsFreeLink control unit.
  8. Check for continuity between body ground and AcuraLink control unit (XM receiver) connector B (16P) No. 7, No. 8, No. 15, and No.16 terminals individually. Is there continuity? YES -Repair short to body ground in the wire(s) between the AcuraLink control unit (XM receiver) and the HandsFreeLink control unit. NO -Go to step 9.
  9. Check for continuity between the terminals of AcuraLink control unit (XM receiver) connector B (16P) as follows. CONNECTOR REFERENCE From terminal To terminals B7 B8, B15, B16, B6 B8 B15, B16, B6 B15 B16, B6 B16 B6 Is there continuity between any of the terminals? YES -Repair short in the wire(s) between the AcuraLink control unit (XM receiver) and the HandsFreeLink control unit (replace the appropriate shielded harness). NO -Go to step 10.
  10. Turn the ignition switch to ON (II), and check the same terminals for voltage. Is there any voltage? YES -Repair short to power in the wire(s) between the AcuraLink control unit (XM receiver) and the HandsFreeLink control unit. NO -Go to step 11.
  11. Turn the ignition switch to LOCK (0).
  12. Reconnect AcuraLink control unit (XM receiver) connector B (16P).
  13. Measure the resistance between AcuraLink control unit (XM receiver) connector B (16P) No. 7, No. 8, and No. 15, No.16 terminals. Is there less than about 100 kohms ? YES -AcuraLink control unit (XM receiver) is faulty, update the AcuraLink control unit if it does not have the latest software, then recheck. If the software is the latest, replace the AcuraLink control unit (see «ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION»(/acura/rdx/i-2006-2009/remont/entertainment-systems/#audio-system) ). NO -Go to step 14.
  14. Reconnect the HandsFreeLink control unit 22P connector.
  15. Turn the ignition switch to ON (II).
  16. Measure the voltage between body ground and AcuraLink control unit (XM receiver) connector B (16P) No. 7 and No. 8 terminals individually.

Scheme 29

Scheme 29
Scheme 29

Is there less than about 3.5 V?

YES -AcuraLink control unit (XM receiver) is faulty, update the AcuraLink control unit if it does not have the latest software, then recheck. If the software is the latest, replace the AcuraLink control unit (see ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION ).

NO -HandsFreeLink control unit is faulty, replace the HandsFreeLink control unit.

  1. Connect the HDS to the DLC (see «GENERAL TROUBLESHOOTING INFORMATION»(/acura/rdx/i-2006-2009/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems) ).
  2. Clear the DTC with the HDS.
  3. Turn the ignition switch to LOCK (0), then turn it to ON (II) and wait 30 seconds or more.
  4. Check for DTC with the HDS.

Is DTC B2209 indicated?

YES -AcuraLink control unit (XM receiver) is faulty, update the AcuraLink control unit if it does not have the latest software, then recheck. If the software is the latest, replace the AcuraLink control unit (see ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION ).

NO -Intermittent failure, AcuraLink control unit (XM receiver) is OK at this time.

DTC B2240: XM Antenna Error

  1. Connect the HDS to the DLC (see «GENERAL TROUBLESHOOTING INFORMATION»(/acura/rdx/i-2006-2009/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems) ).
  2. Clear the DTC with the HDS.
  3. Turn the ignition switch to LOCK (0), then turn it to ON (II) and wait 30 seconds or more.
  4. Check for DTC with the HDS. Is DTC B2240 indicated? YES -Go to step 5. NO -Intermittent failure, AM/FM/XM antenna is OK at this time. Check for poor connections or loose terminals at the AcuraLink control unit (XM receiver) and AM/FM/XM antenna.
  5. Check the XM antenna lead connection at the AcuraLink control unit (XM receiver) and attire AM/FM/XM antenna.

Is it connected properly?

YES -Substitute a known-good AM/FM/XM antenna (see AM/FM/XM ANTENNA REPLACEMENT ), and recheck. If the symptom/indicated goes away, replace the original AM/FM/XM antenna (see AM/FM/XM ANTENNA REPLACEMENT ). If the symptom/indicated is still present update the AcuraLink control unit if it does not have the latest software, then recheck. If the software is the latest, replace the AcuraLink control unit (see ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION ).

NO -Reconnect the connector, and recheck the DTC.

Note. In order for the AcuraLink service to work, the client must have an activated account with XM (receives at least channels, 000,001,174, and 247). Verify the client account status by calling XM Satellite Radio at (800) 852-9696.

Scheme 30

Scheme 30: AcuraLink service does not work
Scheme 30: AcuraLink service does not work

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Scheme 31
  1. Check the No. 23(10 A) fuse in the under-hood fuse/relay box and No. 35 (7.5 A), No. 10 (7.5 A) fuse in the under-dash fuse/relay box. Are the fuses OK? YES -Go to step 2. NO -Replace the fuse(s), and recheck.
  2. Turn the ignition switch to ACCESSORY (I).
  3. Measure the voltage between the No. 2 terminal of the AcuraLink control unit (XM receiver) connector A (20P) and body ground. Is there battery voltage? YES -Go to step 4. NO -Repair open in the wire(s) between the AcuraLink control unit (XM receiver) and the No. 35 (7.5 A) fuse in the under-dash fuse/relay box.
  4. Turn the ignition switch to ON (II).
  5. Measure the voltage between the No. 12 terminal of the AcuraLink control unit (XM receiver) connector A (20P) and body ground. Is there battery voltage? YES -Go to step 6. NO -Repair open in the wire(s) between the AcuraLink control unit (XM receiver) and the No. 10 (7.5 A) fuse in the under-dash fuse/relay box.
  6. Measure the voltage between the No. 11 terminal of AcuraLink control unit (XM receiver) connector A (20P) and body ground.

Scheme 32

Scheme 32
Scheme 32

Is there less than 1 V?

YES -Check for loose terminals or poor connections at the AcuraLink control unit (XM receiver) connector A (20P). If the connections are good, substitute a known-good AcuraLink control unit (XM receiver) (see ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION ), and recheck. If the symptom goes away, replace the original AcuraLink control unit (XM receiver) (see ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION ).

NO -Check for an open in the wire between the AcuraLink control unit (XM receiver) and body ground. If the wire is OK, check for poor ground at G505 (see GROUND TO COMPONENTS INDEX ).

Scheme 33

Scheme 33: AcuraLink messages cannot be heard or are weak
Scheme 33: AcuraLink messages cannot be heard or are weak

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Scheme 44
  1. Turn the ignition switch to ON (II).
  2. Check that the audio system is operating normally and the speaker sound levels are normal from different audio sources (AM/FM, XM, CD/DVDs, Navigation, etc.). Does the audio system work normally and is the audio output from the speaker normal when playing various audio sources? YES -Go to step 3. NO -Refer to the .
  3. Check the audio system when AcuraLink messages are played. Does the audio system mute when AcuraLink messages are being played? YES -If audio system mutes and plays the messages at a normal volume, the system is OK at this time. If the messages are weaker than normal, go to step 4. NO -Go to step 17 .
  4. Turn the ignition switch to LOCK (0).
  5. Disconnect AcuraLink control unit (XM receiver) connector A (20P) and audio unit connector B (14P).
  6. Check for continuity between AcuraLink control unit (XM receiver) connector A (20P) and audio unit connector B (14P) according to the table. CONNECTOR REFERENCE AcuraLink Connector A Audio Unit Connector B Wire color A8 B4 GRY A9 B6 BLK A10 B5 RED A19 B14 GRN A20 B13 WHT Is there continuity? YES -Go to step 7. NO -Open in the wire(s) between AcuraLink control unit (XM receiver) and audio unit. Replace the affected shielded harness.
  7. Check for continuity between AcuraLink control unit (XM receiver) connector A. CONNECTOR REFERENCE AcuraLink Connector A Wire Color A9 BLK A10 RED A19 GRN A20 WHT Is there continuity? YES -Short to body ground in the wire(s) between AcuraLink control unit (XM receiver) and audio unit. Replace the affected shielded harness. NO -Go to step 8.
  8. Check for continuity between the terminal of AcuraLink control unit (XM receiver) connector A (20P) according to the table. CONNECTOR REFERENCE A8 A9, A10, A19, A20 A9 A10, A18, A20 A10 A19, A20 A19 A20 Is there continuity between any of the terminals? YES -Short in the wire(s) between AcuraLink control unit (XM receiver) and audio unit. Replace the appropriate shielded harness. NO -Go to step 9.
  9. Turn the ignition switch to ON (II).
  10. Measure the voltage between the AcuraLink control unit (XM receiver) connector A (20P) and body ground according to the table. CONNECTOR REFERENCE AcuraLink Connector A Wire Color A9 BLK A10 RED A19 GRN A20 WHT Is there less than 0.1 V? YES -Go to step 11. NO -Short to power in the wire(s) between AcuraLink control unit (XM receiver) and audio unit. Replace the affected shielded harness.
  11. Disconnect the HandsFreeLink control unit 22P connector.
  12. Check for continuity between AcuraLink control unit (XM receiver) connector B (16P) and audio unit connector C (28P) according to the table. CONNECTOR REFERENCE AcuraLink Connector B Audio Unit Connector C Wire color B2 C14 GRY B3 C27 GRY B11 C13 RED Is there continuity? YES -Go to step 13. NO -Open in the wire(s) between AcuraLink control unit (XM receiver) and audio unit. Replace the affected shielded harness.
  13. Check for continuity between HandsFreeLink control unit 22P connector and audio unit connector C (28P) according to the table. CONNECTOR REFERENCE HFL Connector Audio Unit Connector C Wire color 6 C14 GRY 7 C27 GRN 19 C13 RED Is there continuity? YES -Go to step 14. NO -Open in the wire(s) between HandsFreeLink control unit and audio unit. Replace the affected shielded harness.
  14. Check for continuity between the audio unit connector C (28P) and body ground according to the table. CONNECTOR REFERENCE Audio Unit Connector C Wire Color C13 RED C27 GRN Is there continuity? YES -Short to body ground in the wire(s) between AcuraLink control unit (XM receiver), HandsFreeLink control unit and audio unit. Replace the affected shielded harness. NO -Go to step 15.
  15. Check for continuity between the terminals of audio unit connector C (28P) according to the table. CONNECTOR REFERENCE From terminal To terminals C13 C14, C27 C14 C27 Is there continuity between the terminals? YES -Short to the wire(s) between AcuraLink control unit (XM receiver), HandsFreeLink control unit and audio unit. Replace the appropriate shielded harness. NO -Go to step 16.
  16. Substitute a known-good AcuraLink control unit (XM receiver) (see «ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION»(/acura/rdx/i-2006-2009/remont/entertainment-systems/#audio-system) ) and recheck the function. Does the problem go away? YES -Update the AcuraLink control unit if it does not have the latest software, then recheck. If the software is the latest, replace the AcuraLink control unit (see «ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION»(/acura/rdx/i-2006-2009/remont/entertainment-systems/#audio-system) ). NO -Substitute a known-good HandsFreeLink control unit and recheck. If symptom goes away, replace the original HandsFreeLink control unit. If symptom is still present, replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/rdx/i-2006-2009/remont/entertainment-systems/#audio-system) ).
  17. Turn the ignition switch to LOCK (0).
  18. Disconnect AcuraLink control unit (XM receiver) connector B (16P) and audio unit connector C (28P).
  19. Check for continuity between AcuraLink control unit (XM receiver) connector B (16P) No. 4 terminal and audio unit connector C (28P) No. 23 terminal. Is there continuity? YES -Go to step 20. NO -Repair open in wire between AcuraLink control unit (XM receiver) and audio unit.
  20. Check for continuity between AcuraLink control unit (XM receiver) connector B (16P) No. 4 terminal and body ground.

Scheme 45

Scheme 45
Scheme 45

Is there continuity?

YES -Repair short to ground in the wire between AcuraLink control unit (XM receiver) and audio unit.

NO -Substitute a known-good AcuraLink control unit (XM receiver) (see ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION ) and recheck. If symptom/indication goes away, replace the original AcuraLink control unit (XM receiver) (see ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION ). If symptom/indications is still present, replace the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ).

Special Tools Required

Scheme 46

Scheme 46: Updating the AcuraLink control unit
Scheme 46: Updating the AcuraLink control unit
  1. GNA600 kit and an iN workstation with AcuraLink update software
  2. 256MB PCMCIA Memory Card
  3. AcuraLink Reprogramming Cable NOTE: Whenever you install a new AcuraLink control unit, you must update the control unit with the latest software. The GNA600 is the only tool currently available to update the AcuraLink control unit. If you are updating a control unit in a new vehicle, make sure all the fuses are installed. Make sure the iN workstation has the latest HDS software installed (The AcuraLink update software is contained in the HDS update CD. The update may take up to 60 minutes You cannot update an AcuraLink control unit with its current or previous software versions. If will only accept a new software version. Before you update the AcuraLink control unit, test the vehicle battery, and only proceed if the results are good. Make sure the battery is connected to a battery booster (not a battery charger) while updating the control unit. If the battery is not in good condition, or it dies during the updating procedure, you may damage the AcuraLink control unit. If you encounter errors in the software, follow the on-screen instructions, or if necessary, reboot the iN workstation, and try again. There are five process involved in updating the AcuraLink control unit: Setting up the GNA600 Capturing the current program ID from the AcuraLink control unit Download the new software to the GNA600 Update the software in the vehicle's AcuraLink control unit Confirm the AcuraLink self- diagnosis Do the update with the ignition switch turned to LOCK (0). To prevent damage to the AcuraLink control unit, do not operate anything electrical (brakes, head lights, etc.) during the update. Check any official Honda service website for more service information about updating the AcuraLink control unit. To update the AcuraLink control unit, you must connect the GNA600 to the AcuraLink connector (A), not the DLC. Before you update an AcuraLink control unit, read the procedure. The order of connecting and disconnecting connectors is critical, and some steps must be done within a specified period of time. If the steps are not followed exactly, you may have to repeat the procedure from the start, and in some cases, you may damage the GNA600 or the AcuraLink control unit. Make sure the ignition switch is turned to LOCK (0). Remove the door sill and the right kick panel (see. Remove the glove box (see. Launch the AcuraLink Update program and follow the on-screen instructions to complete the update. NOTE: If the software in the AcuraLink control unit is the latest, disconnect the update tool from the AcuraLink connector. If the update is part of a troubleshooting or a repair procedure, return to that procedure and continue troubleshooting or repairing the vehicle.

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