Multiplex Integrated Control System Acura ZDX I

Scheme 29

Scheme 30

Scheme 31

Troubleshooting CAN Circuit Related Problems

Note. Check the PCM for DTCs and troubleshoot PCM (see GENERAL TROUBLESHOOTING INFORMATION ) or F-CAN loss of communication errors first.

Using the HDS (Preferred method)

Connect the HDS to the Data Link Connector (DLC).

Note. There are two ways to read B-CAN code with the HDS.

First method; On the HDS, select BODY ELECTRICAL, then select the subsystem that relates to the problem (for example: door locks, keyless, security, etc.), and then last, select the DTCs.

Second method; Ground the SCS circuit with the HDS, then read the DTCs displayed in the multi-information display (MID) in the gauge control module, then go to B-CAN SYSTEM DIAGNOSIS TEST MODE A (see ).

Using B-CAN System Diagnosis Test Mode 1 (Use only if the HDS is unavailable)

1. Check for communication circuit problems using B-CAN System Diagnostic Test Mode 1 (see «TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE 1 AND TEST MODE 2 (WITHOUT THE HDS)»(/acura/zdx/i-2009-2013/remont/communication-devices/#multiplex-integrated-control-system__troubleshooting-b-can-system-diagnosis-test) ).
2. Check for DTCs.
3. If multiple DTCs are stored, sort them, and then troubleshoot the DTCs in this order: Battery voltage DTCs Internal error DTCs Loss of communication DTCs NOTE: If DTC U1280 is stored, troubleshoot DTC U1280 first (see «DTC U1280: COMMUNICATION BUS LINE ERROR (BUS-OFF)»(/acura/zdx/i-2009-2013/remont/communication-devices/#multiplex-integrated-control-system__dtc-u1280-communication-bus-line-error) ). Signal error DTCs
4. If no DTCs are retrieved, use B-CAN System Diagnostic Test Mode 2 to check all inputs related to the failure (see «TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE 1 AND TEST MODE 2 (WITHOUT THE HDS)»(/acura/zdx/i-2009-2013/remont/communication-devices/#multiplex-integrated-control-system__troubleshooting-b-can-system-diagnosis-test) ).

How to Display DTCs on the MID of the Gauge Control Module

Enter the B-CAN System Diagnosis Test Mode 1 (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE 1 AND TEST MODE 2 (WITHOUT THE HDS) ). While in Test Mode 1, with normal communication between the MICU and gauge control module, the DTCs which have been detected and stored individually by various B-CAN (Body-Controller Area Network) units are shown one by one on the multi-information display (MID). To scroll through the DTCs, press the SEL/RESET button

Scheme 32

The control unit that has stored the code can be identified by the number shown after the letters "PA" on the multi-information display (MID).

How to Clear DTCs

1. Enter B-CAN System Diagnosis Test Mode 1 (see «TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE 1 AND TEST MODE 2 (WITHOUT THE HDS)»(/acura/zdx/i-2009-2013/remont/communication-devices/#multiplex-integrated-control-system__troubleshooting-b-can-system-diagnosis-test) ).
2. While in Test Mode 1, press and hold down the SEL/RESET button for at least 10 seconds to clear the DTCs.

Loss of Communication DTC Cross-Reference Chart

When an ECU on the CAN circuit is unable to communicate with the other ECUs on the B-CAN and F-CAN circuits, the other control units set loss of communication DTCs. Use this chart to find the control unit that is not communicating with the other control units on the CAN circuits.

1. Find the Transmitting Control Unit that is in the same row as all of the loss of communication DTCs retrieved.
2. Do the input test for the transmitting control unit. BUS OFF AND INTERNAL ERROR CODES DTC type Related Unit Driver's MICU Passenger's MICU Gauge Control Module Door Multiplex Control Unit Immobilizer-Keyless Control Unit Power Control Unit Keyless Access Control Unit Remote Slot Control Unit Climate Control Unit HandsFreeLink Control Unit AcuraLink Control Unit Power Tailgate Control Unit Power Seat Control Unit BSI Control Unit BUS OFF U1280 U1280 U1280 U1280 U1280 U1280 U1280 U1280 U1280 U1280 U1280 U1280 U1280 U1280 ECU (EEPROM) Error B10A2 B11A2 B1152 B12A1 B1602 B1902 B1792 B1352 B1802 LOSS OF COMMUNICATION Transmitting Control Unit Receiving Unit/Loss of Communication DTC Driver's MICU Passenger's MICU Gauge Control Module Door Multiplex Control Unit Immobilizes Keyless Control Unit Power Control Unit Keyless Access Control Unit Remote Slot Control Unit Climate Control Unit AcuraLink Control Unit Power Seat Control Unit Power Tailgate Control Unit BSI Control Unit Driver's MICU TX U1282 U1282 U1282 U1282 U1282 U1282 U1282 U1282 Passenger's MICU U1283 TX U1283 U1283 U1283 U1283 Gauge Control Module U0155 U0155 TX U0155 U0155 U0155 U0155 U0155 U0155 U0155 U128D U0155 U0155 U0155 Door Multiplex Control Unit U0199 U0199 TX U0199 U0199 U0199 U0199 U0199 Power Control Unit U128B TX Keyless Access Control Unit U1286 TX Remote Slot Control Unit U1289 TX Climate Control Unit U0164 TX PCM U0100 U0100 U0423 SRS Unit U0151 VSA Modulator-Control Unit U0122 TPMS Control Unit U0127 Power Tailgate Control Unit U0230 TX ACC Unit U0104 BSI Control Unit U128F TX TX: Transmitting unit does not set a loss of communication DTC.

DTC Troubleshooting Index

Note. Record all DTCs, and sort them by DTC type using the following DTC troubleshooting indexes, then troubleshoot the DTC(s) in this order

1. Battery voltage DTCs
2. Internal error DTCs
3. Loss of communication DTCs
4. Signal error DTCs

DRIVER'S MICU

PASSENGER'S MICU

DOOR MULTIPLEX CONTROL UNIT

IMMOBILIZER-KEYLESS CONTROL UNIT

GAUGE CONTROL MODULE

HANDSFREELINK CONTROL UNIT

CLIMATE CONTROL UNIT

ACURALINK CONTROL UNIT

POWER SEAT CONTROL UNIT

POWER CONTROL UNIT

REMOTE SLOT CONTROL UNIT

KEYLESS ACCESS CONTROL UNIT

POWER TAILGATE CONTROL UNIT

BSI CONTROL UNIT

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

The body controller area network (B-CAN) and the fast controller area network (F-CAN) share information between multiple electronic control units (ECUs). B-CAN communication moves at a slower speed (125 kbps) for convenience related items and for other functions. F-CAN information moves at a faster speed (500 kbps) for "real time" functions such as fuel and emissions data. To allow both systems to share information, the gauge control module translates and relays the information from B-CAN to F-CAN and from F-CAN to B-CAN. This is called the Gateway Function.

Scheme 33

Gateway Function

The gauge control module acts as a gateway to allow both systems to share information. The gauge control module translates and relays the information from B-CAN to F-CAN and from F-CAN to B-CAN.

Scheme 34

Network "Loss of Communication" Error Checking Function

The ECUs on the CAN circuit send messages to each other. If there are any communication malfunctions on the network, the multi information display (MID) on the gauge control module can indicate the error messages by entering the gauge control module self-diagnostic function (see SELF-DIAGNOSTIC FUNCTION ).

Scheme 35

Self-Diagnostic Function (On-Board Diagnosis)

By connecting the HDS to the data link connector (DLC), the HDS can retrieve the diagnostic information from the driver's MICU via a diagnostic line called the K-LINE. The K-LINE is a separate communication line from the CAN lines, but it is connected to most of the CAN related ECUs. The driver's MICU is a gateway between the HDS and B-CAN related ECUs, and sends B-CAN diagnostic information to the HDS. When doing a function test with the HDS, the HDS sends an output signal through the K-LINE to the driver's MICU. The driver's MICU either relays the request to another ECU, or commands the function itself.

Scheme 36

Wake-Up and Sleep Function

The multiplex integrated control system has wake-up and sleep functions to decrease parasitic draw on the battery when the ignition switch is turned to LOCK (0), or the vehicle ignition is in the OFF mode.

1. In the sleep mode, the multiplex integrated control system stops functioning (communication and CPU control) whenever it is not necessary for the system to operate.
2. As soon as any operation is requested (for example, a door is unlocked), the related control units in sleep mode immediately wake up and begin to function.
3. When the ignition switch is turned to LOCK(0), or the engine start/stop button is pressed to select the OFF mode, and the driver's door is opened, then closed, there is a delay of about 40 seconds before the control unit goes from the wake-up mode to sleep mode.
4. The sleep mode function will not occur if any door is open, or if a key is in the ignition switch.

Note. Sleep and Wake-Up Mode Test (see SLEEP AND WAKE-UP MODE TEST ).

Fail-Safe Function

To prevent improper operation, the MICUs have a fail-safe function. In the fail-safe mode, the output signal is fixed when any part of the system malfunctions (for example, a faulty control unit or communication line).

Each control unit has a hardware fail-safe function that fixes the output signal when there is a CPU malfunction, and a software fail-safe function that ignores the signal from a malfunctioning control unit, which allows the system to continue operating normally.

Hardware Fail-Safe Control

When a CPU problem or an abnormal power supply voltage is detected, the MICUs move to the hardware fail-safe mode, and each system output load is set to the pre-programmed fail-safe value.

Software Fail-Safe Control

When any data from the B-CAN circuit cannot be received within a specified time, or an unusual combination of data is recognized, the MICUs move to the software fail-safe mode. The data that was not received is then assigned a pre-programmed fail-safe value.

Power Supply Voltage Monitoring Function

The driver's MICU monitors the power supply voltage (back-up voltage). If the voltage drops below 10 V, the driver's MICU does not store a DTCs.

Entry Lights Control System (Ceiling Lights, Map Lights, Ignition Key Light)*

The driver's MICU controls the interior lights and ignition key light ON/OFF is based on input signal from each switch.

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Collision Detection Signal (CDS)

The driver's MICU controls the door lock actuators based on IG1 and SRS (CDS) inputs.

Key Interlock

The driver's MICU controls the key interlock solenoid based on ignition switch ACCESSORY (I) position, the transmission range switch P position, and the park pin switch inputs.

Rear Window Defogger Timer Operation

The driver's MICU controls the rear window defogger timer based on ignition switch and rear window defogger switch inputs.

Combination Light Switch

The driver's MICU controls the lighting system based on inputs from the combination light switch.

Daytime Running Lights

The driver's MICU controls the headlights as daytime running lights based on inputs from each switch.

Fog Lights

The driver's MICU controls the fog lights based on inputs from the fog light switch.

Headlight Auto-OFF Function*

The driver's MICU controls the lighting system based on inputs from each switch.

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Turn Signal/Hazard Warning Lights

The driver's MICU controls the turn signal/hazard warning lights based on inputs from the turn signal switch and the hazard warning switch.

Courtesy Light (Driver's Side)

The driver's MICU controls the driver's and left rear door courtesy lights based on inputs from the driver's and left rear door switches.

Wiper

The driver's MICU controls the wiper based on inputs from each switch.

Driver's Power Window Relay

The driver's MICU controls the power windows based on inputs from each switch.

Keyless Answer Back*

The driver's MICU controls the lighting system and horns based on keyless signals sent by B-CAN.

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Security Answer Back*

The driver's MICU controls the lighting system and horns based on keyless signals sent by B-CAN.

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Answer Back Response Operation

The driver's MICU controls the lighting system and horns based on keyless signals sent by B-CAN.

Power Door Locks*

The driver's MICU controls the door lock actuators based on the inputs from each switch.

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Door Lock Response Operation

The driver's MICU controls the door lock actuators LOCK, UNLOCK, DRIVER'S UNLOCK, TRUNK UNLOCK based on B-CAN door lock switch signals.

Keyless Entry System*

The driver's MICU controls the door lock actuators based on the inputs from each switch.

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Keyless PANIC Operation

The driver's MICU controls the keyless PANIC operation based on keyless signals sent by B-CAN data.

Auto Power Door Locks (LOCK Operation)*

The driver's MICU controls the door lock actuators based on inputs from each switch.

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Auto Power Door Locks (UNLOCK Operation)*

The driver's MICU controls the door lock actuators based on inputs from each switch.

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Security Alarm System

The driver's MICU controls the lighting system and horns based on inputs from each switch and B-CAN signals.

The passenger's MICU monitors the power supply voltage (back-up voltage). If the voltage drops below 10 V, the passenger's MICU does not store DTCs.

Courtesy Light (Passenger's Side)

The passenger's MICU controls the front passenger and right rear door courtesy lights based on inputs from the front passenger and right rear door switch.

Power Door Locks (LOCK)*

The passenger's MICU controls the front passenger's side door lock actuators based on inputs from the driver's MICU.

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Power Door Locks (UNLOCK)*

The passenger's MICU controls the front passenger's side door lock actuators based on inputs from the driver's MICU.

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Exterior Lights

The passenger's MICU controls the front passenger's side headlight, and parking lights based on inputs from the driver's MICU.

Automatic Lighting*

The passenger's MICU controls the headlights and the parking lights based on inputs from the automatic lighting sensor.

*: This system can be customized in the multi-information display (MID) to suit the client's needs. For more information about customizing options, refer to the Owner's Manual.

Washer Operation

The passenger's MICU controls the washer motor based on inputs from the wiper switch.

Keyless Buzzer Operation

The passenger's MICU controls the keyless buzzer based on inputs from the answer back signals.

Passenger's Power Window Relay Circuit

The passenger's MICU controls the power window relay circuit in the passenger's under-dash fuse/relay box based on inputs from the power window signals.

HDS Inputs and Function Test

Certain inputs happen so quickly that the Data List on the HDS cannot update fast enough. Hold the switch that is being tested while monitoring the Data List. This should give the HDS time to update the signal on the Data List.

Because the HDS software is updated to support the release of newer vehicles, it is not uncommon to see system function tests that are not supported.

Make sure that the most current HDS software is loaded.

INPUT

FUNCTION TEST

Troubleshooting - B-CAN System Diagnosis Test Mode A

Check the PCM for DTCs and troubleshoot PCM (see GENERAL TROUBLESHOOTING INFORMATION ) or F-CAN loss of communication errors first, then do this diagnosis if the symptom is related to the B-CAN system.

Scheme 37

1. Compare the symptom with this list of B-CAN related systems: Gauge control module Exterior lights Turn signals Entry light control Interior lights Safety indicators Horns (security and panic) Chimes (key-in, seat belt, lights-on, and parking brake) Power window/panoramic glass roof timer Wiper/washer Security Keyless entry Power door locks Key interlock Dashlights brightness Immobilizer Daytime running lights Driving position memory system XM radio AcuraLink HandsFreeLink Climate control Keyless access control Power tailgate BSI system Is the symptom related to the B-CAN system? YES -Go to step 2. NO -Go to the system troubleshooting for the system with the symptom.
2. Connect the HDS to the data link connector (DLC) (A), then turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
3. From the BODY ELECTRICAL SYSTEM SELECT menu, select B-CAN CONTROL UNITS INFORMATION, and then select CHECK CONNECTED CONTROL UNITS listed to see if the following control units are communicating with the HDS. Driver's MICU Passenger's MICU Door multiplex control unit (HDS name: Power Window Unit) Gauge control module Immobilizer-keyless control unit Climate control unit HandsFreeLink control unit Power seat control unit (HDS name: Memory seat control unit) AcuraLink control unit (XM receiver) (HDS name: HIP (Honda Information Platform) Unit) Keyless access control unit (HDS name: Keyless access ECM) Power tailgate control unit BSI control unit NOTE: If a unit is communicating with the HDS, DETECT is displayed. If a unit is not communicating or the vehicle is not equipped, "NOT AVAILABLE" is displayed. The HDS only checks the status one time when BODY ELECTRICAL is selected. To recheck the status after repair, reboot the HDS. Are all control units communicating with the HDS? YES -Go to step 4. NO -If any of the control units are not communicating, go to «B-CAN SYSTEM DIAGNOSIS TEST MODE B»(/acura/zdx/i-2009-2013/remont/communication-devices/#multiplex-integrated-control-system__troubleshooting-b-can-system-diagnosis-test) (see ). If all units are not communicating or only the driver's MICU is communicating, go to «DTC U1280 TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/communication-devices/#multiplex-integrated-control-system__dtc-u1280-communication-bus-line-error) (see ).
4. Select the system that has the problem from the BODY ELECTRICAL SYSTEM SELECT menu, then select DTCs. Are any DTCs indicated? YES -Go to step 5. NO -If the problem is related to one of the following items, and the system that is malfunctioning does not stop or turn off, go to «B-CAN SYSTEM DIAGNOSIS TEST MODE C»(/acura/zdx/i-2009-2013/remont/communication-devices/#multiplex-integrated-control-system__troubleshooting-b-can-system-diagnosis-test) (see ). If the problem is related to one of the following items and the system that is malfunctioning does not run or turn on, go to «B-CAN SYSTEM DIAGNOSIS TEST MODE D»(/acura/zdx/i-2009-2013/remont/communication-devices/#multiplex-integrated-control-system__troubleshooting-b-can-system-diagnosis-test) (see ). Exterior lights Turn signals Entry light control Interior lights Horns (security and panic) Wiper/washer Power window Power door locks If the problem is related to one of the following items, go to the troubleshooting for that individual system. Gauge control module Safety indicators Chimes (key-in, seat belt, lights-on, and parking brake) Security Keyless entry Key interlock Dashlights brightness Navigation system (if equipped) HandsFreeLink Immobilizer Driving position memory system Rear window defogger (climate control) Climate control Keyless access control Power tailgate BSI system
5. Record all DTCs, and sort them by DTC type.
6. Troubleshoot the DTC(s) in this order: Battery voltage DTCs. Internal error DTCs. Loss of communication DTCs. Signal error DTCs.

Troubleshooting - B-CAN System Diagnosis Test Mode B

Do this diagnosis if any of the control units are not communicating (NOT AVAILABLE is displayed on the HDS) as found by B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

1. Using the HDS, select the system that has the symptom from the BODY ELECTRICAL SYSTEM SELECT menu.
2. Select the DTCs, and then check for loss of communication DTCs. Are any loss of communication DTCs indicated? YES -Go to step 3. NO -Faulty driver's MICU; replace the driver's under-dash fuse/relay box (see «DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/fuses-circuit-breakers/#under-dash-fuserelay-box) ).
3. Do the power, ground, and communication part of the input test for the unit(s) not communicating with the HDS. Unit not communicating Driver's MICU (see «MICU INPUT TEST»(/acura/zdx/i-2009-2013/remont/communication-devices/#multiplex-integrated-control-system__micu-input-test) ) Gauge control module (see «GAUGE CONTROL MODULE INPUT TEST»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#gauges__gauge-control-module-input-test) ) Power control unit (see «RF UNIT 1 REPLACEMENT»(/acura/zdx/i-2009-2013/remont/door-locks-anti-theft-systems/#keyless-access-system) ) Keyless access control unit (see «CONTROL UNIT INPUT TEST»(/acura/zdx/i-2009-2013/remont/door-locks-anti-theft-systems/#keyless-access-system) ) Remote slot control unit (see «RF UNIT 1 REPLACEMENT»(/acura/zdx/i-2009-2013/remont/door-locks-anti-theft-systems/#keyless-access-system) ) Immobilizer-keyless control unit (see «IMMOBILIZER-KEYLESS CONTROL UNIT INPUT TEST»(/acura/zdx/i-2009-2013/remont/door-locks-anti-theft-systems/#immobilizer-system__immobilizer-keyless-control-unit-input-test) ) Passenger's MICU (see «MICU INPUT TEST»(/acura/zdx/i-2009-2013/remont/communication-devices/#multiplex-integrated-control-system__micu-input-test) ) Door multiplex control unit (see «POWER WINDOW MASTER SWITCH INPUT TEST»(/acura/zdx/i-2009-2013/remont/windows/#power-windows__power-window-master-switch-input-test) ) Climate control unit (see «CLIMATE CONTROL POWER AND GROUND CIRCUIT TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-hvac-system/#climate-control) ) Audio-navigation unit (see «AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS (WITH NAVIGATION)»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system__audio-unit-connector-for-inputs-and) ) Power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ) AcuraLink control unit (see «ACURALINK CONTROL UNIT (XM RECEIVER) CONNECTOR FOR INPUTS AND OUTPUTS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#acuralink) ) HandsFreeLink control unit (see «CONTROL UNIT INPUT TEST»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system) ) Power tailgate control unit (see «CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/exterior-body-panels/#power-tailgate__control-unit-input-testreplacement) ) BSI control unit (see «BLIND SPOT INFORMATION SYSTEM (BSI) CONTROL UNIT INPUTS AND OUTPUTS»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#blind-spot-information-system-bsi) )

Troubleshooting - B-CAN System Diagnosis Test Mode C

Do this diagnosis if a component that is controlled by the B-CAN system does not stop or turn off.

Note. If the component does not turn on, go to B-CAN SYSTEM DIAGNOSIS TEST MODE D (see ). Seethe B-CAN system unit input/output index for a list of input and output devices and the control units that monitor the input and control the output devices (see BODY CONTROLLER AREA NETWORK (B-CAN) AND FAST CONTROLLER AREA NETWORK (F-CAN) ).

1. Check for DTCs by selecting the system MODE MENU from the HDS. Are any DTCs indicated? YES -Go to «B-CAN SYSTEM DIAGNOSIS TEST MODE A»(/acura/zdx/i-2009-2013/remont/communication-devices/#multiplex-integrated-control-system__troubleshooting-b-can-system-diagnosis-test) (see ). NO -Go to step 2.
2. Turn off the switch that controls the malfunctioning component.
3. Select the applicable system from the system MODE MENU, then select the DATA LIST, and check the input of the switch that controls the related component. Does the HDS indicate the switch is OFF? YES -Go to step 4. NO -Go to step 6 .
4. In the DATA LIST, check the output signal of the malfunctioning component. Is the output signal OFF? YES -Go to step 5. NO -Replace the control unit that controls the device that will not turn OFF.
5. Check the relay that does not stop or turn off, if applicable, then check for a short in the wire between the relay and the component, the relay and control unit, or the component and control unit. Are the relay and the circuit OK? YES -Replace the control unit that controls the component that will not stop or turn OFF. NO -Replace the relay or repair/replace the wire harness.
6. Check the switch, then check for a short in the wire between the switch and the control unit that monitors the switch. Are the switch and wire harness OK? YES -Replace the control unit that monitors the switch. NO -Replace the switch or repair/replace the wire harness.

Troubleshooting - B-CAN System Diagnosis Test Mode D

Do this diagnosis if a component that is controlled by the B-CAN system does not run or come on.

Note. If the component does not turn off or stop, go to B-CAN SYSTEM DIAGNOSIS TEST MODE C (see ). See the B-CAN system unit input/output index for a list of input and output devices and the control units that monitor the input and control the output devices (see BODY CONTROLLER AREA NETWORK (B-CAN) AND FAST CONTROLLER AREA NETWORK (F-CAN) ).

1. Check the fuse of the malfunctioning output device. Is the fuse OK? YES -Go to step 2. NO -Replace the fuse. If the fuse blows again, repair a short to ground on the fuse circuit of the malfunctioning device.
2. Check for DTCs by selecting the system MODE MENU from the HDS. Are any DTCs indicated? YES -Go to «B-CAN SYSTEM DIAGNOSIS TEST MODE A»(/acura/zdx/i-2009-2013/remont/communication-devices/#multiplex-integrated-control-system__troubleshooting-b-can-system-diagnosis-test) (see ). NO -Go to step 3.
3. Turn ON the switch that controls the malfunctioning component.
4. Select the applicable system from the system MODE MENU, then select DATA LIST, and check the input of the switch that controls the related component. Is there an output signal? YES -Go to step 5. NO -Go to step 9 .
5. Check the relay (if applicable) and ground, then check for an open or a short in the circuit for the malfunctioning component. Are the relay and the circuit OK? YES -Go to step 6. NO -Replace the relay or repair the wire circuit.
6. Do the function test for the malfunctioning component. Does the output device pass the function test? YES -Go to step 7. NO -Replace the component.
7. With the malfunctioning output device connected, connect a voltmeter between the malfunctioning output device and body ground on the wire that the control unit uses to control the output device circuit.
8. Select FUNCTIONAL. TEST from the system MODE MENU, and do the forced operation test of the malfunctioning component. Is there a change in voltage (12 V to 0 V or 0 V to 12 V)? YES -Inspect the ground for the component. If OK, replace the component. NO -Replace the control unit that controls the malfunctioning component.
9. Select the DATA LIST from the system MODE MENU, and make sure the switch signal input for the malfunctioning system indicates a change when operated. Does the switch input indicate ON when the switch is ON? YES -Replace the control unit that controls the malfunctioning component. NO -Go to step 10.
10. Check the switch and its ground (if applicable), then check for an open or a short in the wire between the switch and the control unit that monitors it. Are the switch and the wire harness OK? YES -Replace the control unit that monitors the switch. NO -Replace the switch, or repair/replace the wire harness.

Troubleshooting - B-CAN System Diagnosis Test Mode 1 and Test Mode 2 (without the HDS)

Special Tools Required

MPCS (MCIC) Service Connector 07WAZ-001010A

Test Mode 1

Check the PCM for DTCs and troubleshoot PCM (see GENERAL TROUBLESHOOTING INFORMATION ) or F-CAN loss of communication errors first, then do this diagnosis if the HDS is not available.

Scheme 38

1. Check the No. 15 (10 A) fuse in the under-hood fuse/relay box and the No. 12 (7.5 A) fuse in the driver's under-dash fuse/relay box. Are the fuses OK? YES -Go to step 2. NO -Replace the fuse(s). If the fuse blows again, repair a short to ground on the fuse circuit(s).
2. Remove the driver's dashboard undercover (see «DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#dashboard) ).
3. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and move the individual map light switch to the middle (door) position.
4. Connect the MPCS service connector (A) to the MICU service check connector socket (B) in the driver's under-dash fuse/relay box.
5. Wait 5 seconds, and watch the individual map light. When the individual map light flashes quickly once and then goes off, the system is in Test Mode 1.
6. Check for B-CAN DTCs indicated by the multi-information display (MID) on the gauge control module while still in Test Mode 1. Press the SEL/RESET button to display the next code. After you get to the last code, the display shows END. If no DTCs are stored, the display will read NO (see «USING B-CAN SYSTEM DIAGNOSIS TEST MODE 1 (USE ONLY IF THE HDS IS UNAVAILABLE)»(/acura/zdx/i-2009-2013/remont/communication-devices/#multiplex-integrated-control-system__using-b-can-system-diagnosis-test-mode) ). NOTE: If the test times out, remove the MPCS service connector, turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, and repeat steps 3 and 4 . Are any DTCs indicated? YES -Go to step 7. NO -Go to step 10 .
7. Record all DTCs, and sort them by DTC type.
8. Troubleshoot the DTC(s) in this order: Battery voltage DTCs Internal error DTCs Loss of communication DTCs Signal error DTCs
9. Clear the DTCs by pressing and holding the SEL/RESET button for about 10 seconds.
10. You will hear a beep to confirm the codes have been cleared. Operate the devices that failed, and recheck for codes. Test Mode 2
11. Remove the MPCS service connector from the driver's under-dash fuse/relay box MICU service check connector socket for 5-10 seconds, then re-insert it to enter Mode 2. When the system enters Mode 2, the individual map light flashes two times quickly and then goes off. NOTE: If the MPCS service connector is disconnected for too short or too long of a time, or if the ignition switch is turned to LOCK (0), or if the vehicle is in OFF mode, the systems returns to Test Mode 1.
12. The following tables list the circuits that can be checked in Test Mode 2. Operate the switch that is most closely related to the problem. If the circuit is OK, the individual map light blinks once. If the circuit is faulty, there is no indication. DRIVER'S MICU Item Brake pedal position switch (ON) Driver's door switch Left rear door switch Tailgate latch switch Fog light switch Left rear door lock knob switch (UNLOCK) Wiper switch (HI/LO) Wiper switch (INT/LO) Wiper switch (MIST) Washer switch Wiper intermittent dwell time controller Turn signal switch (LEFT) Turn signal switch (RIGHT) Hazard warning switch (ON) Headlight switch (AUTO) Headlight switch (ON) Headlight switch (OFF) Lighting switch (ON) Dimmer switch (ON) Passing switch (ON) Transmission range switch (P) Ignition key switch Security hood switch Windshield wiper motor park position (Auto stop) Driver's seat heater switch (LO) Driver's seat heater switch (HI) PASSENGER'S MICU Item Front passenger's door switch Right rear door switch Right rear door lock knob switch (UNLOCK) Audio unit Front passenger's seat heater switch (LO) Front passenger's seat heater switch (HI) Automatic lighting sensor DOOR MULTIPLEX CONTROL UNIT Item Driver's door lock switch (UNLOCK) Driver's door lock switch (LOCK) Driver's door lock knob switch (UNLOCK) Driver's door lock knob switch (LOCK) Driver's door lock key cylinder switch (UNLOCK) (1) Driver's door lock key cylinder switch (LOCK) (1) (1) A second key is necessary to check the key cylinder inputs. Be sure to rotate the key cylinder switch two times to each position (lock and lock, unlock and unlock) to ensure the door lock knob switch is in the appropriate position. FRONT PASSENGER'S POWER WINDOW SWITCH Item Front passenger's door lock switch (UNLOCK) Front passenger's door lock switch (LOCK) Front passenger's door lock knob switch (UNLOCK) POWER SEAT CONTROL UNIT Item Transmission range switch (P) Slide switch (Forward) Slide switch (Backward) Recline switch (Forward) Recline switch (Backward) Front UP-DOWN switch (Up) Front UP-DOWN switch (Down) Rear UP-DOWN switch (Up) Rear UP-DOWN switch (Down) Does the individual map light work properly in all switch positions? YES -Go to function and input test for the system related to the failure. NO -Repair the open, short, or replace the faulty switch.

Sleep and Wake-Up Mode Test

1. Shift to the sleep mode: Close all doors. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, remove the key without keyless access system, then open and close the driver's door. If the MICU receives no signals from the inputs listed below, it will go into sleep mode in less than 50 seconds. IG1 power supply IG2 power supply B-CAN data Tailgate latch switch (Tailgate closed) (OFF) Hazard warning switch (OFF)
2. Confirm the sleep mode: NOTE: Check any official Honda service website for more service information about parasitic draw at the battery. Check the parasitic draw at the battery while shifting into the sleep mode; amperage should change from about 200 mA to less than 35 mA in less than 50 seconds.
3. Shift to the wake-up mode: When the ignition switch is turned to ON (II), or the vehicle is in ON mode. The driver's MICU, the passenger's MICU, the gauge control module, the immobilizer-keyless control unit, and the PCM wake-up at the same time without "talking" to each other through the communication lines. When any switch in the multiplex integrated control system is turned on, it wakes up its related control unit which, in turn, wakes up the other units. After confirming the MICU is in sleep mode, look in the following table for the switch most related to the problem. Operate that switch and see if its control unit wakes up. NOTE: If any control unit is faulty and does not wake up, several circuits in the system malfunction at the same time. Below is a list of the switches and input signals that wake them up. IG1 power supply IG2 power supply B-CAN data Driver's door switch (door open) Left rear door switch (door open) Tailgate latch switch (Tailgate open) Tailgate outer handle switch (Tailgate open) Left rear door lock knob switch Security hood switch (hood open) Hazard warning switch (ON) Combination light switch (Parking, Headlight, Dimmer, Passing ON) Ignition key switch (key inserted) Driver's door key cylinder switch (LOCK/UNLOCK) Passenger's rear door lock knob (UNLOCK) Front passenger's door lock knob (UNLOCK) Driver's door lock switch (LOCK/UNLOCK) Front passenger's door lock switch (LOCK/UNLOCK) Front passenger's door switch (door open) Passenger's rear door switch (door open)

Scheme 39

Scheme 40

Scheme 41

Scheme 42

DTC B10A2: Driver's MICU Internal (EEPROM) 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. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Check for DTCs with the HDS. Is DTC B10A2 indicated? YES -Faulty driver's MICU; replace the driver's under-dash fuse/relay box (see «DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/fuses-circuit-breakers/#under-dash-fuserelay-box) ). NO -Intermittent failure, the system is OK at this time.

DTC B11A2: Passenger's MICU Internal (EEPROM) 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. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Check for DTCs with the HDS. Is DTC B11A2 indicated? YES -Faulty passenger's MICU; replace the passenger's under-dash fuse/relay box (see «INSTALLATION»(/acura/zdx/i-2009-2013/remont/fuses-circuit-breakers/#under-dash-fuserelay-box__installation) ). NO -Intermittent failure, the system is OK at this time.

DTC B1036: Driver's MICU IG1 Line Input 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 ). Before troubleshooting, make sure the No. 12 (7.5 A) fuse in the driver's under-dash fuse/relay box is OK.

Scheme 43

1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS. Is DTC B1036 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections at the driver's under-dash fuse/relay box connector C (5P). If the connections are good, check the battery condition (see «BATTERY TEST»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ) and the charging system.
5. Measure the voltage between gauge control module connector A (32P) terminals No. 15 and body ground. Is there battery voltage? YES -Faulty driver's MICU; replace the driver's under-dash fuse/relay box (see «DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/fuses-circuit-breakers/#under-dash-fuserelay-box) ). NO -Repair an open or high resistance in the wire between the driver's under-dash fuse/relay box and the gauge control module.

DTC B11C7: Passenger's MICU IG1 Line Input 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 ). Before troubleshooting, make sure the No. 12 (7.5 A) fuse in the driver's under-dash fuse/relay box is OK.

Scheme 44

1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS. Is DTC B11C7 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections. If the connections are good, check the battery condition (see «BATTERY TEST»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ) and the charging system.
5. Check the DTCs with the HDS. Is DTC B11C7 indicated with DTC U1282? YES -Go to «DTC U1282 TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/communication-devices/#multiplex-integrated-control-system__dtc-u1282-passengers-micu-lost-communication) (see ). NO -Go to step 6.
6. Measure the voltage between the passenger's under-dash fuse/relay box connector A (38P) terminal No. 35 and body ground. Is there battery voltage? YES -Faulty passenger's MICU; replace the passenger's under-dash fuse/relay box (see «INSTALLATION»(/acura/zdx/i-2009-2013/remont/fuses-circuit-breakers/#under-dash-fuserelay-box__installation) ). NO -Repair an open or high resistance in the wire between the passenger's under-dash fuse/relay box and the driver's under-dash fuse/relay box.

DTC U0155: Driver's MICU Lost Communication With Gauge Control Module

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 ).

Scheme 45

Scheme 46

Scheme 47

1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS. Is DTC U0155 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections between the driver's MICU and the gauge control module.
5. Measure the voltage between body ground and gauge control module connector A (32P) terminals No. 15 and No. 16 individually. Is there battery voltage? YES -Go to step 8 . NO -Go to step 6.
6. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
7. Check the No. 15 (10 A) fuse in the under-hood fuse/relay box and the No. 12 (7.5 A) fuse in the driver's under-dash fuse/relay box. Are the fuses OK? YES -Repair an open or high resistance in the No. 15 (10 A) and/or No. 12 (7.5 A) fuse circuit. NO -Replace the fuse(s). If the fuse blows again, repair a short to ground on the No. 15 (10 A) and/or No. 12 (7.5 A) fuse circuit.
8. Measure the voltage between body ground and gauge control module connector A (32P) terminals No. 1 and No. 17 individually. Is there less than 0.2 V? YES -Go to step 9. NO -Repair an open or high resistance in the ground wire(s) or poor ground (G401) and/or (G402).
9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
10. Disconnect driver's under-dash fuse/relay box connector P (20P).
11. Disconnect gauge control module connector A (32P).
12. Check for continuity between gauge control module connector A (32P) terminals No. 29 and No. 30 and driver's under-dash fuse/relay box connector P (20P) terminals No. 5 and No. 6 respectively. Is there continuity? YES -Replace the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#gauges__gauge-control-module-replacement) ). NO -Repair an open or poor connection in the B-CAN wire(s) between the driver's MICU and the gauge control module.

DTC U0155: Passenger's MICU Lost Communication With Gauge Control Module

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 ).

Scheme 48

Scheme 49

Scheme 50

1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS. Is DTC U0155 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections between the passenger's MICU and the gauge control module.
5. From the BODY ELECTRICAL SYSTEM SELECT menu, select B-CAN CONTROL UNITS INFORMATION, and then select CHECK CONNECTED CONTROL UNITS. Is the gauge control module detected? YES -Go to step 10 . NO -Go to step 6.
6. Measure the voltage between body ground and gauge control module connector A (32P) terminals No. 15 and No. 16 individually. Is there battery voltage? YES -Go to step 9 . NO -Go to step 7.
7. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
8. Check the No. 15 (10 A) fuse in the under-hood fuse/relay box and the No. 12 (7.5 A) fuse in the driver's under-dash fuse/relay box. Are the fuses OK? YES -Repair an open or high resistance in the No. 15 (10 A) and/or No. 12 (7.5 A) fuse circuit. NO -Replace the fuse(s). If the fuse blows again, repair a short to ground on the No. 15 (10 A) and/or No. 12 (7.5 A) fuse circuit.
9. Measure the voltage between body ground and gauge control module connector A (32P) terminals No. 1 and No. 17 individually. Is there less than 0.2 V? YES -Go to step 10. NO -Repair an open or high resistance in the ground wire(s) or poor ground (G401) and/or (G402).
10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
11. Disconnect passenger's under-dash fuse/relay box connector A (38P).
12. Disconnect gauge control module connector A (32P).
13. Check for continuity between gauge control module connector A (32P) terminals No. 29 and No. 30 and passenger's under-dash fuse/relay box connector A (38P) terminals No. 29 and No. 11 respectively. Is there continuity? YES -Replace the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#gauges__gauge-control-module-replacement) ). NO -Repair an open or poor connection in the B-CAN wire(s) between the passenger's MICU and the gauge control module.

DTC U0199: Driver's MICU Lost Communication With Door Multiplex Control Unit

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 ).

Scheme 51

Scheme 52

Scheme 53

1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS. Is DTC U0199 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections between the driver's MICU and the door multiplex control unit.
5. Measure the voltage between body ground and power window master switch 37P connector terminal No. 13. Is there battery voltage? YES -Go to step 8 . NO -Go to step 6.
6. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
7. Check the No. 15 (10 A) fuse in the under-hood fuse/relay box. Is the fuse OK? YES -Repair an open or high resistance in the No. 15 (10 A) fuse circuit. NO -Replace the fuse. If the fuse blows again, repair a short to ground on the No. 15(10 A) fuse circuit.
8. Measure the voltage between body ground and power window master switch 37P connector terminals No. 32 and No. 37 individually. Is there less than 0.2 V? YES -Go to step 9. NO -Repair an open or high resistance in the ground wire(s) or poor ground (G401) and/or (G402).
9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
10. Disconnect driver's under-dash fuse/relay box connector P (20P).
11. Disconnect the power window master switch 37P connector.
12. Check for continuity between power window master switch 37P connector terminals No. 33 and No. 35 and driver's under-dash fuse/relay box connector P (20P) terminals No. 5 and No. 6 respectively. Is there continuity? YES -Replace the power window master switch (see «REAR POWER WINDOW SWITCH TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/windows/#power-windows) ). NO -Repair an open or poor connection in the B-CAN wire(s) between the driver's MICU and the door multiplex control unit.

DTC U1280: Communication Bus Line Error (BUS-OFF)

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 ).

Scheme 54

Scheme 55

Scheme 56

1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS. Is DTC U1280 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections, or worn/shorted wires. If the connections are good, check the battery condition (see «BATTERY TEST»(/acura/zdx/i-2009-2013/remont/body-electrical/#battery) ) and the charging system.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect the appropriate connector at each control unit in the table one at a time. Clear the DTC, then recheck for DTCs after each unit is disconnected. Control Unit Connector Passenger's MICU Passenger's under-dash fuse/relay box connector A (38P) Door multiplex control unit Power window master switch 37P connector Gauge control module Connector A (32P) Immobilizer-keyless control unit (1) 7P connector Power control unit (2) Connector C (36P) Keyless access control unit (2) Connector B (32P) Remote slot control unit (2) 40P connector Audio-navigation control unit (4) Connector D (20P) Audio unit (3) Connector D (20P) Climate control unit Connector C (20P) Power seat control unit Connector B (40P) HandsFreeLink control unit 28P connector AcuraLink control unit (5) Connector A (32P) Power tailgate control unit Connector C(14P) BSI control unit 20P connector (1) Without keyless access system (2) With keyless access system (3) Without navigation (4) With navigation (5) With AcuraLink Is DTC U1280 indicated with each individual unit disconnected? YES -Leave the connectors disconnected, and go to step 7. NO -Go to the input test (or circuit troubleshooting) for the control unit that was disconnected when DTC U1280 did not reset and perform all power and ground input tests. If the tests prove OK, replace that unit. Passenger's MICU input test (see «MICU INPUT TEST»(/acura/zdx/i-2009-2013/remont/communication-devices/#multiplex-integrated-control-system__micu-input-test) ) Door multiplex control unit (power window master switch) input test (see «POWER WINDOW MASTER SWITCH INPUT TEST»(/acura/zdx/i-2009-2013/remont/windows/#power-windows__power-window-master-switch-input-test) ) Gauge control unit input test (see «GAUGE CONTROL MODULE INPUT TEST»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#gauges__gauge-control-module-input-test) ) Power control unit input test (see «RF UNIT 1 REPLACEMENT»(/acura/zdx/i-2009-2013/remont/door-locks-anti-theft-systems/#keyless-access-system) ) Keyless access control unit input test (see «CONTROL UNIT INPUT TEST»(/acura/zdx/i-2009-2013/remont/door-locks-anti-theft-systems/#keyless-access-system) ) Remote slot control unit input test (see «RF UNIT 1 REPLACEMENT»(/acura/zdx/i-2009-2013/remont/door-locks-anti-theft-systems/#keyless-access-system) ) Immobilizer-keyless control unit input test (see «IMMOBILIZER-KEYLESS CONTROL UNIT INPUT TEST»(/acura/zdx/i-2009-2013/remont/door-locks-anti-theft-systems/#immobilizer-system__immobilizer-keyless-control-unit-input-test) ) Climate control unit power and ground circuit troubleshooting (see «CLIMATE CONTROL POWER AND GROUND CIRCUIT TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/automatic-hvac-system/#climate-control) ) Power seat control unit input test (see «POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/seats/#driver-position-memory-system-dpms__power-seat-control-unit-input-testreplacement) ) HandsFreeLink control unit input test (see «CONTROL UNIT INPUT TEST»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system) ) AcuraLink control unit input test (see «ACURALINK CONTROL UNIT (XM RECEIVER) CONNECTOR FOR INPUTS AND OUTPUTS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#acuralink) ) Audio unit input test (see «AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS (WITH NAVIGATION)»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system__audio-unit-connector-for-inputs-and) ) Audio-navigation unit input test (see «NAVIGATION UNIT CONNECTOR FOR INPUTS AND OUTPUTS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#navigation-system__navigation-unit-connector-for-inputs-and) ) Power tailgate control unit input test (see «CONTROL UNIT INPUT TEST/REPLACEMENT»(/acura/zdx/i-2009-2013/remont/exterior-body-panels/#power-tailgate__control-unit-input-testreplacement) ) BSI control unit input test (see «BLIND SPOT INFORMATION SYSTEM (BSI) CONTROL UNIT INPUTS AND OUTPUTS»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#blind-spot-information-system-bsi) )
7. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
8. Remove the driver's dashboard undercover (see «DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#dashboard) ).
9. Disconnect driver's under-dash fuse/relay box connector P (20P).
10. Check for continuity between driver's under-dash fuse/relay box connector P (20P) terminals No. 5 and No. 6. Is there continuity? YES -Repair a short between the B-CAN wires. NO -Go to step 11.
11. Check for continuity between body ground and driver's under-dash fuse/relay box connector P (20P) terminals No. 5 and No. 6 individually. Is there continuity? YES -Repair a short to ground in the B-CAN wire(s). NO -Go to step 12.
12. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
13. Measure the voltage between body ground and driver's under-dash fuse/relay box connector P (20P) terminals No. 5 and No. 6 individually. Is there voltage? YES -Repair a short to power in the B-CAN wire(s). NO -Faulty driver's MICU, replace the driver's under-dash fuse/relay box (see «DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/fuses-circuit-breakers/#under-dash-fuserelay-box) ).

DTC U1282: Passenger's MICU Lost Communication With Driver's MICU

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 to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS. Is DTC U1282 indicated? YES -Faulty passenger's MICU; replace the passenger's under-dash fuse/relay box (see «DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/fuses-circuit-breakers/#under-dash-fuserelay-box) ). NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections between the passenger's MICU and the driver's MICU.

DTC U1283: Driver's MICU Lost Communication With Passenger's MICU

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 ).

Scheme 57

Scheme 58

Scheme 59

Scheme 60

1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS. Is DTC U1283 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections between the driver's MICU and the passenger's MICU.
5. Measure the voltage between body ground and passenger's under-dash fuse/relay box connector A (38P) terminals No. 14 and No. 35 individually. Is there battery voltage? YES -Go to step 8 . NO -Go to step 6.
6. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
7. Check the No. 15 (10 A) fuse in the under-hood fuse/relay box and the No. 12 (7.5 A) fuse in the driver's under-dash fuse/relay box. Are the fuses OK? YES -Repair an open or high resistance in the No. 15 (10 A) and/or No. 12 (7.5 A) fuse circuit. NO -Replace the fuse(s). If the fuse blows again, repair a short to ground on the No. 15 (10 A) and/or No. 12 (7.5 A) fuse circuit.
8. Measure the voltage between body ground and passenger's under-dash fuse/relay box connector A (38P) and E (18P) terminals as shown in illustration. Passenger's under-dash fuse/relay box connector A36 Body ground A37 E15 E16 Is there less than 0.2 V? YES -Go to step 9. NO -Repair an open or high resistance in the ground wire(s) or poor ground (G203), (G402), and/or (G405).
9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
10. Disconnect passenger's under-dash fuse/relay box connector A (38P).
11. Disconnect driver's under-dash fuse/relay box connector P (20P).
12. Check for continuity between passenger's under-dash fuse/relay box connector A (38P) terminals No. 11 and No. 29 and driver's under-dash fuse/relay box connector P (20P) terminals No. 6 and No. 5 respectively. Is there continuity? YES -Faulty driver's MICU; replace the driver's under-dash fuse/relay box (see «DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/fuses-circuit-breakers/#under-dash-fuserelay-box) ). NO -Repair an open or poor connection in the B-CAN wire(s) between the driver's MICU and the passenger's MICU.

MICU Input Test

Note. Before testing, troubleshoot the multiplex integrated control system first, using B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Driver's MICU

Scheme 61

Scheme 62

1. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
2. Remove the driver's dashboard undercover (see «DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#dashboard) ).
3. Disconnect driver's under-dash fuse/relay box connectors E, N, P, Q, and R. NOTE: All connector views are wire side of female terminals.
4. Inspect the connector and socket terminals to be sure they are all making good contact. If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system. If the terminals look OK, go to step 5.
5. With the connectors still disconnected, do the following input tests: If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, go to step 6. Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained P5 (1) BLU Power control unit connector C (36P) disconnected Check for continuity between terminal P5 and power control unit connector C (36P) terminal No. 17: There should be continuity. An open in the B-CAN wire P6 (1) PNK Check for continuity between terminal P6 and power control unit connector C (36P) terminal No. 16: There should be continuity. An open in the B-CAN wire P5 (1) BLU Keyless access control unit connector B (32P) disconnected Check for continuity between terminal P5 and keyless access control unit connector B (32P) terminal No. 7: There should be continuity. An open in the B-CAN wire P6 (1) PNK Check for continuity between terminal P6 and keyless access control unit connector B (32P) terminal No. 8: There should be continuity. An open in the B-CAN wire P5 (1) BLU Remote slot control unit 40P connector disconnected Check for continuity between terminal P5 and remote slot control unit 40P connector terminal No. 23: There should be continuity. An open in the B-CAN wire P6 (1) PNK Check for continuity between terminal P6 and remote slot control unit 40P connector terminal No. 3: There should be continuity. An open in the B-CAN wire P5 (2) BLU Immobilizer-keyless control unit 7P connector disconnected Check for continuity between terminal P5 and immobilizer-keyless control unit 7P connector terminal No. 3: There should be continuity. An open in the B-CAN wire P6 (2) PNK Check for continuity between terminal P6 and immobilizer-keyless control unit 7P connector terminal No. 4: There should be continuity. An open in the B-CAN wire P5 BLU Gauge control module connector A (32P) disconnected Check for continuity between terminal P5 and gauge control module connector A (32P) terminal No. 29: There should be continuity. An open in the B-CAN wire P6 PNK Check for continuity between terminal P6 and gauge control module connector A (32P) terminal No. 30: There should be continuity. An open in the B-CAN wire P5 BLU Power window master switch 37P connector disconnected Check for continuity between terminal P5 and power window master switch 37P connector terminal No. 33: There should be continuity. An open in the B-CAN wire P6 PNK Check for continuity between terminal P6 and power window master switch 37P connector terminal No. 35: There should be continuity. An open in the B-CAN wire P5 BLU Passenger's under-dash fuse/relay box connector A (38P) disconnected Check for continuity between terminal P5 and passenger's under-dash fuse/relay box connector A (38P) terminal No. 29: There should be continuity. An open in the B-CAN wire P6 PNK Check for continuity between terminal P6 and passenger's under-dash fuse/relay box connector A (38P) terminal No. 11: There should be continuity. An open in the B-CAN wire P5 BLU Climate control unit connector C (20P) disconnected Check for continuity between terminal P5 and climate control unit connector C (20P) terminal No. 7: There should be continuity. An open in the B-CAN wire P6 PNK Check for continuity between terminal P6 and climate control unit connector C (20P) terminal No. 8: There should be continuity. An open in the B-CAN wire P5 (3) BLU Audio-navigation unit connector D (20P) disconnected Check for continuity between terminal P5 and audio-navigation unit connector D (20P) terminal No. 15: There should be continuity. An open in the B-CAN wire P6 (3) PNK Check for continuity between terminal P6 and audio-navigation unit connector D (20P) terminal No. 6: There should be continuity. An open in the B-CAN wire P5 (4) BLU Audio unit connector D (20P) disconnected Check for continuity between terminal P5 and audio unit connector D (20P) terminal No. 15: There should be continuity. An open in the B-CAN wire P6 (4) PNK Check for continuity between terminal P6 and audio unit connector D (20P) terminal No. 6: There should be continuity. An open in the B-CAN wire P5 BLU Power seat control unit connector B (40P) disconnected Check for continuity between terminal P5 and power seat control unit connector B (40P) terminal No. 39: There should be continuity. An open in the B-CAN wire P6 PNK Check for continuity between terminal P6 and power seat control unit connector B (40P) terminal No. 40: There should be continuity. An open in the B-CAN wire P5 BLU HandsFreeLink control unit 28P connector disconnected Check for continuity between terminal P5 and HandsFreeLink control unit 28P connector terminal No. 17: There should be continuity. An open in the B-CAN wire P6 PNK Check for continuity between terminal P6 and HandsFreeLink control unit 28P connector terminal No. 18: There should be continuity. An open in the B-CAN wire P5 (5) BLU AcuraLink control unit connector A (32P) disconnected Check for continuity between terminal P5 and AcuraLink control unit connector A (32P) terminal No. 8: There should be continuity. An open in the B-CAN wire P6 (5) PNK Check for continuity between terminal P6 and AcuraLink control unit connector A (32P) terminal No. 9: There should be continuity. An open in the B-CAN wire P5 BLU Power tailgate control unit connector C (14P) disconnected Check for continuity between terminal P5 and power tailgate control unit connector C (14P) terminal No. 6: There should be continuity. An open in the B-CAN wire P6 PNK Check for continuity between terminal P6 and power tailgate control unit connector C (14P) terminal No. 7: There should be continuity. An open in the B-CAN wire P5 (6) BLU BSI control unit 16P connector disconnected Check for continuity between terminal P5 and BSI control unit 16P connector terminal No. 5: There should be continuity. An open in the B-CAN wire P6 (6) PNK Check for continuity between terminal P6 and BSI control unit 16P connector terminal No. 6: There should be continuity. An open in the B-CAN wire P5 BLU Disconnect these connectors: Immobilizer-keyless control unit 7P connector (2) Gauge control module connector A (32P) Power window master switch 37P connector Passenger's under-dash fuse/relay box connector A (38P) Climate control unit connector C (20P) Audio unit connector D (20P) (4) Audio-navigation unit connector D (20P) (3) HandsFreeLink control unit 28P connector Power seat control unit connector B (40P) Power control unit connector C (36P) (1) Keyless access control unit connector B (32P) (1) Remote slot control unit 40P connector (1) AcuraLink control unit connector A (32P) (5) Power tailgate control unit connector C (14P) BSI control unit 16P connector (6) Check for continuity to ground: There should be no continuity. A short to ground in the B-CAN wire P6 PNK N12 BRN In all ignition switch positions or all power modes Check for continuity between terminal N12 and body ground: There should be continuity. Poor ground (G401) An open or high resistance in the ground wire Q16 LT BLU Under all conditions Check for continuity between terminal Q16 and data link connector (DLC) 16P terminal No. 7: There should be continuity. An open in the K-LINE wire Check for continuity to ground: There should be no continuity. A short to ground in the K-LINE wire (1) With keyless access system (2) Without keyless access system (3) With navigation (4) Without navigation (5) With AcuraLink (6) With BSI
6. Reconnect the connectors to the driver's under-dash fuse/relay box, and do the following input tests: If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, go to step 7. NOTE: These are power and ground tests for the multiplex integrated control unit. Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained E14 WHT Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 15 (10 A) fuse in the under-hood fuse/relay box Faulty driver's under-dash fuse/relay box An open or high resistance in the wire E20 BRN Ignition switch ON (II), or power mode ON Measure the voltage to ground: There should be battery voltage. Blown No. 12 (7.5 A) fuse in the driver's under- dash fuse/relay box Faulty driver's under-dash fuse/relay box An open or high resistance in the wire P9 WHT Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 15 (10 A) fuse in the under-hood fuse/relay box An open or high resistance in the wire P20 BRN Ignition switch ON (II), or power mode ON Measure the voltage to ground: There should be battery voltage. Blown No. 12 (7.5 A) fuse in the driver's under-dash fuse/relay box Faulty driver's under-dash fuse/relay box An open or high resistance in the wire Q1 BRN In all ignition switch positions or all power modes Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G401) An open or high resistance in the ground wire Q2 BLK In all ignition switch positions or all power modes Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G402) An open or high resistance in the ground wire R2 BLK In all ignition switch positions or all power modes Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G402) An open or high resistance in the ground wire R5 ORN In all ignition switch positions or all power modes Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G401) An open or high resistance in the ground wire Passenger's MICU
7. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
8. Remove the passenger's kick panel (see «TRIM REMOVAL/INSTALLATION - DOOR AREAS»(/acura/zdx/i-2009-2013/remont/exteriorinterior-trim/#interior-trim__trim-removalinstallation-door-areas) ).
9. Disconnect passenger's under-dash fuse/relay box connectors A and E. NOTE: All connector views are wire side of female terminals.
10. Inspect the connector and socket terminals to be sure they are all making good contact. If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system. If the terminals look OK, go to step 11.
11. Reconnect the connectors to the passenger's under-dash fuse/relay box.
12. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and do the following input tests: If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, go to step 13. Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained A14 WHT Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 15 (10 A) fuse in the under-hood fuse/relay box An open or high resistance in the wire A35 BRN Ignition switch ON (II), or power mode ON Measure the voltage to ground: There should be battery voltage. Blown No. 12 (7.5 A) fuse in the driver's under-dash fuse/relay box Faulty driver's under-dash fuse/relay box An open or high resistance in the wire A36 BLK In all ignition switch positions or all power modes Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G405) An open or high resistance in the ground wire A37 BRN In all ignition switch positions or all power modes Measure the voltage to ground: There should be less than 0.2 V. Poor ground (G402) An open or high resistance in the ground wire E15 BLK In all ignition switch positions or all power modes Measure the voltage to ground: There should be less than 0.2 V. Poor ground(G203) An open or high resistance in the ground wire E16 BLK In all ignition switch positions or all power modes Measure the voltage to ground: There should be less than 0.2 V. Poor ground(G203) An open or high resistance in the ground wire
13. If multiple failures are found on more than one control unit, replace the driver's under-dash fuse/relay box (includes the driver's MICU) (see «DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL AND INSTALLATION»(/acura/zdx/i-2009-2013/remont/fuses-circuit-breakers/#under-dash-fuserelay-box) ). If input failures are related to a particular control unit, replace the control unit.

See also:
• GENERAL TROUBLESHOOTING INFORMATION
• DTC TROUBLESHOOTING
• DTC TROUBLESHOOTING
• DTC B1275: HEADLIGHT OFF POSITION CIRCUIT MALFUNCTION; DTC B1276: HEADLIGHT SWITCH PARKING POSITION CIRCUIT MALFUNCTION; DTC B1277: HEADLIGHT AUTO POSITION CIRCUIT MALFUNCTION; DTC B1278: HEADLIGHT ON POSITION CIRCUIT MALFUNCTION
• DTC B1279: DIMMER SWITCH CIRCUIT MALFUNCTION
• DTC TROUBLESHOOTING
• DTC B1281: FRONT WIPER MIST POSITION CIRCUIT MALFUNCTION; DTC B1282: FRONT WIPER INT (AUTO) POSITION CIRCUIT MALFUNCTION; DTC B1283: FRONT WIPER LOW POSITION CIRCUIT MALFUNCTION; DTC B1284: FRONT WIPER HIGH POSITION CIRCUIT MALFUNCTION
• DTC B11CF: RIGHT DAYTIME RUNNING LIGHTS CIRCUIT MALFUNCTION
• DTC B1575: AUTO LIGHTING SENSOR MALFUNCTION
• DTC TROUBLESHOOTING
• DTC TROUBLESHOOTING
• DTC B1128: DRIVER'S DOOR LOCK SWITCH MALFUNCTION
• DTC B1129: DRIVER'S DOOR LOCK KNOB SWITCH MALFUNCTION
• DTC B1130: FRONT PASSENGER'S POWER WINDOW MOTOR A-PULSE MALFUNCTION; DTC B1131: FRONT PASSENGER'S POWER WINDOW MOTOR B-PULSE MALFUNCTION
• DTC B1140: DRIVER'S POWER WINDOW POSITION DETECT CIRCUIT MALFUNCTION
• DTC B1142: DOOR MULTIPLEX CONTROL UNIT LOST COMMUNICATION WITH OTHER UNITS (UART COMMUNICATION ERROR)
• DTC B1145: FRONT PASSENGER'S POWER WINDOW POSITION DETECT CIRCUIT MALFUNCTION
• DTC U0164: DOOR MULTIPLEX CONTROL UNIT LOST COMMUNICATION WITH CLIMATE CONTROL UNIT
• DTC U1282: DOOR MULTIPLEX CONTROL UNIT LOST COMMUNICATION WITH DRIVER'S MICU
• DTC U1283: DOOR MULTIPLEX CONTROL UNIT LOST COMMUNICATION WITH PASSENGER'S MICU
• DTC TROUBLESHOOTING
• DTC U0199: IMMOBILIZER-KEYLESS CONTROL UNIT LOST COMMUNICATION WITH DOOR MULTIPLEX CONTROL UNIT
• DTC U1282: IMMOBILIZER-KEYLESS CONTROL UNIT LOST COMMUNICATION WITH DRIVER'S MICU
• DTC TROUBLESHOOTING
• DTC B1176: FUEL LEVEL SENSOR (FUEL GAUGE SENDING UNIT) CIRCUIT SHORT
• DTC B1192: GAUGE CONTROL MODULE LOST COMMUNICATION WITH THE BATTERY SENSOR (UART LINE)
• DTC U0029: F-CAN COMMUNICATION LINE ERROR (BUS OFF)
• DTC U0100: GAUGE CONTROL MODULE LOST COMMUNICATION WITH PCM
• DTC U0104: GAUGE CONTROL MODULE LOST COMMUNICATION WITH ACC UNIT (ACC FRAME)
• DTC U0122: GAUGE CONTROL MODULE LOST COMMUNICATION WITH VSA MODULATOR-CONTROL UNIT (VSA MESSAGE)
• DTC U0127: GAUGE CONTROL MODULE LOST COMMUNICATION WITH THE TPMS CONTROL UNIT (TPMS MESSAGE)
• DTC U0151: GAUGE CONTROL MODULE LOST COMMUNICATION WITH SRS UNIT (SRS MESSAGE)
• DTC U0199: GAUGE CONTROL MODULE LOST COMMUNICATION WITH DOOR MULTIPLEX CONTROL UNIT
• DTC U0230: GAUGE CONTROL MODULE LOST COMMUNICATION WITH POWER TAILGATE CONTROL UNIT
• DTC U1282: GAUGE CONTROL MODULE LOST COMMUNICATION WITH DRIVER'S MICU
• DTC U1283: GAUGE CONTROL MODULE LOST COMMUNICATION WITH PASSENGER'S MICU
• DTC U1286: GAUGE CONTROL MODULE LOST COMMUNICATION WITH KEYLESS ACCESS CONTROL UNIT
• DTC U1289: GAUGE CONTROL MODULE LOST COMMUNICATION WITH REMOTE SLOT CONTROL UNIT
• DTC U128B: GAUGE CONTROL MODULE LOST COMMUNICATION WITH POWER CONTROL UNIT
• DTC U128F: GAUGE CONTROL MODULE LOST COMMUNICATION WITH BSI CONTROL UNIT (BSI MESSAGE)
• DTC TROUBLESHOOTING
• DTC B1775: MICROPHONE INPUT/OUTPUT SHORTED TO POWER OR OPEN (WITHOUT NAVIGATION)
• DTC B1776: MICROPHONE INPUT/OUTPUT SHORTED TO GROUND (WITH NAVIGATION)
• DTC B1779: HANDSFREELINK STEERING WHEEL SWITCH FAILURE
• DTC B1780: HANDSFREELINK STEERING WHEEL SWITCH LINE SHORT
• DTC B1792: HANDSFREELINK CONTROL MODULE ERROR
• DTC TROUBLESHOOTING
• DTC TROUBLESHOOTING
• DTC U128D: LOST COMMUNICATION WITH GAUGE CONTROL MODULE
• DTC TROUBLESHOOTING
• DTC B1826: FRONT HEIGHT PULSE ERROR (NO CHANGE IN PULSE FOR 1 SECOND)
• DTC B1827: REAR HEIGHT PULSE ERROR (NO CHANGE IN PULSE FOR 1 SECOND)
• DTC B1828: DRIVER'S SEAT RECLINE MOTOR PULSE ERROR
• DTC B1829: A/T-P SIGNAL AND VSP SIGNAL MISMATCH
• DTC B1832: RIGHT MIRROR POSITION SENSOR OPEN
• DTC B1835: STEERING COLUMN MANUAL SWITCH MALFUNCTION
• DTC B1836: POWER SEAT POSITION SENSOR CIRCUIT SHORT
• DTC B1837: MEMORY POSITION CALLING TIMEOUT
• DTC B1840: STEERING COLUMN TILT PULSE FAILURE
• DTC B1841: STEERING COLUMN TELESCO PULSE FAILURE
• DTC B1842: POWER TILT/TELESCOPIC POSITION SENSOR POWER SUPPLY CIRCUIT (SVCC LINE) SHORT
• DTC B1843: UART COMMUNICATION ERROR
• DTC B1844: POWER SEAT SLIDE SWITCH CIRCUIT MALFUNCTION
• DTC B1845: POWER SEAT RECLINE SWITCH CIRCUIT MALFUNCTION
• DTC B1846: POWER SEAT FRONT UP-DOWN SWITCH CIRCUIT MALFUNCTION
• DTC B1847: POWER SEAT REAR UP-DOWN SWITCH CIRCUIT MALFUNCTION
• DTC U0155: POWER SEAT CONTROL UNIT LOST COMMUNICATION WITH GAUGE CONTROL MODULE (VSP/NE FRAME)
• DTC U0199: POWER SEAT CONTROL UNIT LOST COMMUNICATION WITH DOOR MULTIPLEX CONTROL UNIT (DRLOCKSW FRAME)
• DTC U1282: POWER SEAT CONTROL UNIT LOST COMMUNICATION WITH DRIVER'S MICU
• DTC TROUBLESHOOTING
• DTC B12C6: ELECTRIC STEERING LOCK SWITCH C/D MONITOR CIRCUIT FAILURE
• DTC B12C7: ELECTRIC STEERING LOCK MOTOR CIRCUIT FAILURE
• DTC B12D0: POWER CONTROL UNIT IG1A CIRCUIT ERROR; DTC B12D1: POWER CONTROL UNIT IG1B CIRCUIT ERROR; DTC B12D2: POWER CONTROL UNIT IG2 CIRCUIT ERROR; DTC B12D3: POWER CONTROL UNIT IG LATCH CIRCUIT ERROR
• DTC B12E0: ELECTRIC STEERING LOCK SWITCH INTERNAL ERROR
• DTC B12F0: POWER CONTROL UNIT LOST COMMUNICATION WITH ELECTRIC STEERING LOCK
• DTC B12F1: POWER CONTROL UNIT LOST COMMUNICATION WITH REMOTE SLOT CONTROL UNIT
• DTC B12F2: POWER CONTROL UNIT LOST COMMUNICATION WITH KEYLESS ACCESS CONTROL UNIT
• DTC U0155: POWER CONTROL UNIT LOST COMMUNICATION WITH GAUGE CONTROL MODULE
• DTC U0199: POWER CONTROL UNIT LOST COMMUNICATION WITH DOOR MULTIPLEX CONTROL UNIT
• DTC B1901: REMOTE SLOT CONTROL UNIT INTERNAL ERROR (CPU ERROR); DTC B1902: REMOTE SLOT CONTROL UNIT INTERNAL ERROR (EEPROM ERROR)
• DTC B1926: REMOTE SLOT ANTENNA OPEN OR SHORT
• DTC B1632: MTR CONT SIGNAL ERROR; DTC B1927: MTR CONT SIGNAL ERROR
• DTC B1931: REMOTE SLOT CONTROL UNIT NO RESPONSE
• DTC U0155: REMOTE SLOT CONTROL UNIT LOST COMMUNICATION WITH GAUGE CONTROL MODULE
• DTC B1601: KEYLESS ACCESS CONTROL UNIT INTERNAL (CPU) ERROR; DTC B1602: KEYLESS ACCESS CONTROL UNIT INTERNAL (EEPROM) ERROR
• DTC B1640: RF UNIT 1 NOT CONNECTED
• DTC B1641: RF UNIT 2 NOT CONNECTED
• DTC B1646: DRIVER'S DOOR LF ANTENNA CIRCUIT OPEN OR SHORT
• DTC B1648: PASSENGER'S DOOR LF ANTENNA CIRCUIT OPEN OR SHORT
• DTC B1658: REAR BUMPER LF ANTENNA CIRCUIT OPEN OR SHORT
• DTC B1660: FRONT INTERIOR LF ANTENNA CIRCUIT OPEN OR SHORT
• DTC B1662: MIDDLE INTERIOR LF ANTENNA CIRCUIT OPEN OR SHORT
• DTC B1664: REAR INTERIOR LF ANTENNA CIRCUIT OPEN OR SHORT
• DTC U0155: KEYLESS ACCESS CONTROL UNIT LOST COMMUNICATION WITH GAUGE CONTROL MODULE
• DTC U0199: KEYLESS ACCESS CONTROL UNIT LOST COMMUNICATION WITH DOOR MULTIPLEX CONTROL UNIT
• DTC U1282: KEYLESS ACCESS CONTROL UNIT LOST COMMUNICATION WITH DRIVER'S MICU
• DTC TROUBLESHOOTING
• DTC B1376: TAILGATE OUTER HANDLE SWITCH CIRCUIT MALFUNCTION
• DTC U0155: LOST COMMUNICATION WITH GAUGE CONTROL MODULE (VSP/NE, AT FRAME)
• DTC TROUBLESHOOTING
• DTC B18A6: RIGHT BSI RADAR UNIT TEMPERATURE HIGH
• DTC B18A9: LEFT BSI RADAR UNIT VOLTAGE INPUT HIGH
• DTC B18AA: RIGHT BSI RADAR UNIT VOLTAGE INPUT HIGH
• DTC B18B1: RIGHT BSI RADAR UNIT INTERNAL CIRCUIT ERROR
• DTC B18B8: LEFT BSI RADAR UNIT AZIMUTH OFF ALIGNMENT; DTC B18B9: RIGHT BSI RADAR UNIT AZIMUTH OFF ALIGNMENT
• DTC B18BA: LEFT BSI RADAR UNIT VERSION INCORRECT; DTC B18BB: RIGHT BSI RADAR UNIT VERSION INCORRECT
• DTC B18BD: BSI CONTROL UNIT VOLTAGE INPUT HIGH
• DTC U0423: INVALID DATA RECEIVED FROM PCM (VEHICLE SPEED DATA)
• SELF-DIAGNOSTIC FUNCTION
• DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL AND INSTALLATION
• GAUGE CONTROL MODULE INPUT TEST
• IMMOBILIZER-KEYLESS CONTROL UNIT INPUT TEST
• POWER WINDOW MASTER SWITCH INPUT TEST
• AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS (WITH NAVIGATION)
• POWER SEAT CONTROL UNIT INPUT TEST/REPLACEMENT
• CONTROL UNIT INPUT TEST/REPLACEMENT
• DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION
• INSTALLATION
• BATTERY TEST
• GAUGE CONTROL MODULE REPLACEMENT
• NAVIGATION UNIT CONNECTOR FOR INPUTS AND OUTPUTS
• TRIM REMOVAL/INSTALLATION - DOOR AREAS
• B-CAN SYSTEM DIAGNOSIS TEST MODE A
• DTC U1280: COMMUNICATION BUS LINE ERROR (BUS-OFF)
• B10A2
• B1036
• U0155
• U0199
• U1283
• B11A2
• B11C7
• U0155
• U1282
• SLEEP AND WAKE-UP MODE TEST
• MICU INPUT TEST
• BODY CONTROLLER AREA NETWORK (B-CAN) AND FAST CONTROLLER AREA NETWORK (F-CAN)
• USING B-CAN SYSTEM DIAGNOSIS TEST MODE 1 (USE ONLY IF THE HDS IS UNAVAILABLE)