Multiplex Integrated Control System Acura RL II

Scheme 1

Scheme 2

Troubleshooting CAN Circuit Related Problems

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

You can easily check the F-CAN and B-CAN connection status and DTCs by using one of the following methods

1. The HDS (Preferred method) can check the F-CAN and B-CAN communication status, read and clear DTCs, display the data list, and perform function tests. Go to B-CAN System Diagnosis Test Mode A to check "Connected units" and DTCs (see «TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__troubleshooting-b-can-system-diagnosis-test) ).
2. The AcuraLink Self-diagnostic Procedure can check communication status, and read and clear DTCs (see «SELF-DIAGNOSTIC FUNCTION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#acuralink__self-diagnostic-function) ).
3. The Gauge control module self-diagnosis function can check the F-CAN and B-CAN communication status (see «SELF-DIAGNOSTIC FUNCTION»(/acura/rl/ii-2004-2008/remont/gauges-instrument-panels/#gauges__self-diagnostic-function) ).
4. The MID (multi-information display) can read and clear DTCs (see «GAUGE CONTROL MODULE DTC DISPLAY»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system) ).
5. B-CAN System Diagnosis Test Mode 1 and Test Mode 2 can check communication status and test some switch circuits (see «TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE 1 AND TEST MODE 2 (WITHOUT THE HDS)»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__troubleshooting-b-can-system-diagnosis-test) ).

Using the HDS (Preferred method)

1. Go to B-CAN System Diagnosis Test Mode A to check for "Connected units" and DTCs (see «TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__troubleshooting-b-can-system-diagnosis-test) ).
2. If no DTCs are retrieved, go to «B-CAN SYSTEM DIAGNOSIS TEST MODE C»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__troubleshooting-b-can-system-diagnosis-test) or D (see «TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE D»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__troubleshooting-b-can-system-diagnosis-test) ).

Without HDS (Use only if the HDS is unavailable)

1. Check for communication circuit problems using B-CAN System Diagnostic Test (see «TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__troubleshooting-b-can-system-diagnosis-test) ).
2. Check for DTCs.
3. Sort, and then troubleshoot the DTCs in this order: Battery voltage DTCs Internal error DTCs Loss of communication DTCs (beginning with the lowest number first; for example, if B1008 and B1011 are retrieved, troubleshoot B1008 first). Refer to «LOSS OF COMMUNICATION CROSS REFERENCE CHART»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__loss-of-communication-dtc-cross-reference-chart) . 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 step 11 ).

BUS OFF and Internal Error Codes

BUS OFF AND INTERNAL ERROR CODES REFERENCE

Loss of Communication DTC Cross-reference Chart

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

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. LOSS OF COMMUNICATION DTC CROSS-REFERENCE CHART Transmitting Control Unit Message Receiving Unit/Loss of Communication DTC MICU Relay Control Module Driver's MPCS Unit Combination Switch Control Unit Gauge Control Module Climate Control Unit Adaptive Front Lighting Control Unit Power Seat Control Unit Keyless Access Control Unit MICU ALARM B1056 MICU B1055 B2155 B1255 B1157 B2107 B1806 B1605 ASLOCKSW MIRRORSW B2156 B1810 AUTOLT B1180 Relay Control Module RM B1005 B1158 Driver's MPCS Unit DRLOCKSW B1015 B1065 B1182 B1614 DOORSW B1014 B1064 B1181 B1811 B1613 ASLOCKSW B1013 B1615 MENSW B1812 Combination Switch Control Unit HLSW B1007 B1062 B1155 B2108 WIPSW B1063 B1156 Gauge Control Module VSP/NE B1011 B1060 B2160 B1205 B1805 B1610 AT B1008 B1061 B2106 B1808 ENGTEP B1206 ILLUMI B2157 B1207 STEERING B2105 Adaptive Front Lighting Control Unit AFS B1166 Keyless Access Control Unit REMOTE B2159 B1161 PANIC B1016 B1066 REMOTE ID B1208 PCM ENG B1168 AT B1169 VSA/TCS VSA B1170 Adaptive Cruise Control (ACC) Unit ACC B1171 TPMS Control Unit TPMS B1173

DTC Troubleshooting Index

Note. Record all DTCs, and sort them by DTC type using the DTC troubleshooting index, then troubleshoot the DTC(s) in this order: Battery voltage DTCs Internal error DTCs Loss of communication DTCs (beginning with the lowest number first; for example, if B1008 and B1011 are retrieved, troubleshoot B1008 first). Signal error DTCs

MICU

MICU - DTC TROUBLESHOOTING CHART

Relay Control Module

RELAY CONTROL MODULE - DTC TROUBLESHOOTING CHART

Driver's MPCS Unit (Rear Power Window section)

DRIVER'S MPCS UNIT - DTC TROUBLESHOOTING CHART

Gauge Control Module

GAUGE CONTROL MODULE - DTC TROUBLESHOOTING CHART

Climate Control Unit

CLIMATE CONTROL UNIT - DTC TROUBLESHOOTING CHART

Combination Switch Control Unit

COMBINATION SWITCH CONTROL UNIT - DTC TROUBLESHOOTING CHART

OnStar Control Unit ('05-06 models)

ONSTAR CONTROL UNIT - DTC TROUBLESHOOTING CHART

Keyless Access Control Unit

KEYLESS ACCESS CONTROL UNIT - DTC TROUBLESHOOTING CHART

HandsFreeLink Control Unit

HANDSFREELINK CONTROL UNIT - DTC TROUBLESHOOTING CHART

Power Seat Control Unit

POWER SEAT CONTROL UNIT - DTC TROUBLESHOOTING CHART

Adaptive Front Lighting Control Unit

ADAPTIVE FRONT LIGHTING CONTROL UNIT - DTC TROUBLESHOOTING CHART

Driver's MPCS Unit

DRIVER'S MPCS UNIT - DTC TROUBLESHOOTING CHART

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

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

The ECUs on the B-CAN and the F-CAN transmit and receive information in the form of structured messages that may be received by several different ECUs on the network at one time. These messages are transmitted and received across a communication circuit that consists of a single wire that is shared by all the ECUs on the circuit. Since messages on the F-CAN are typically of higher importance, a second wire is used for communication circuit integrity monitoring. A backup circuit is also added to the headlight and wiper circuits on the B-CAN in the event of a network wire or ECU failure that would effect the operation of the system.

Scheme 3

Messages are transmitted by an ECU (that monitors an input) over the communication circuit. ECUs that use the message (information related to that input) are the receivers. For example, the combination switch control unit monitors the wiper switch. When the wiper switch is placed in the low speed position, the combination switch control unit transmits that message on the communication circuit. The relay control module receives the message and turns on the wipers by providing a ground for the relay.

Scheme 4

Connected ECUs

Several ECUs are connected to each of the two networks. The gauge control module is part of both networks since it is the "gateway" between them. Here is a list of ECUs and the network they are connected to.

B-CAN ECUs

1. Gauge control module
2. Relay control module
3. MICU
4. Driver's MPCS unit
5. Combination switch control unit
6. Climate control unit
7. HandsFreeLink control unit
8. Power seat control unit
9. Adaptive front lighting control unit
10. Keyless access control unit
11. AcuraLink control unit (XM receiver)
12. OnStar control unit ('05-06 models)

F-CAN ECUs

Scheme 5

1. Gauge control module
2. PCM
3. VSA modulator-control unit
4. TPMS control unit
5. SH-AWD control unit
6. Adaptive cruise control unit ('06-08 models)
7. E-pretensioner unit ('06-08 models)
8. Data link connector ('07-08 models)

Network "Loss of Communication" Error Checking

The B-CAN and the F-CAN send messages to each other to check the integrity of the network communication circuit. They do this by sending a specific digital message out after an event. For example, after turning the ignition switch to ON (II), all the ECUs on the communication circuit expect to receive a message from other specific units within a specified amount of time. If the message is not received, the ECU will transmit a DTC reporting that it did not receive the message.

Examples of a communication circuit test

Normal circuit

Scheme 6

1. Ignition switch is turned ON (II).
2. The driver's MPCS unit transmits a door lock switch message.
3. The MICU, relay control module, gauge control module, keyless access control unit and OnStar control unit* (if applicable) receive the door lock switch message. *: '05-06 models
4. The communication circuit test is passed. Since the door lock switch message was received by all the ECUs expecting to receive a message, the communication circuit between those units is OK. There are multiple messages sent and received by each ECU during this time to insure that the communication circuit is intact. Failed circuit
5. Ignition switch is turned ON (II).
6. The driver's MPCS unit transmits a door lock switch message.
7. The MICU, relay control module, gauge control module, keyless access control unit and OnStar control unit* (if applicable) expect to receive the door lock switch message, but since there is a break in the communication circuits, it is not received. *: '05-06 models
8. Each ECU that expects to receive the door lock switch message from the driver's MPCS unit will transmit DTCs for the message that it did not receive. Since there is a break in the communication circuit, the door lock switch message could not be received by the MICU, the relay control module, the gauge control module, the keyless access control unit, or the OnStar control unit* (if applicable). Each of these units will set "loss of communication" error codes for the message(s) they did not receive. There maybe multiple communication DTCs if the unit that has become disconnected from the network would normally transmit multiple messages during the communication line test. For example, the driver's MPCS unit sends the door switch message and door lock switch message during the communication circuit test. *: '05-06 models

Diagnostic Trouble Codes (DTC)

There are three types of DTCs used by the CAN networks.

DIAGNOSTIC TROUBLE CODES CHART

B-CAN System Unit Input/Output Index

MICU INPUT/OUTPUT SIGNAL CHART

RELAY CONTROL MODULE INPUT/OUTPUT SIGNAL CHART

COMBINATION SWITCH CONTROL UNIT INPUT/OUTPUT SIGNAL CHART

DRIVER'S MPCS UNIT INPUT/OUTPUT SIGNAL CHART

FRONT PASSENGER'S MPCS UNIT (UART) INPUT/OUTPUT SIGNAL CHART

ADAPTIVE FRONT LIGHTING CONTROL UNIT INPUT/OUTPUT SIGNAL CHART

GAUGE CONTROL MODULE INPUT/OUTPUT SIGNAL CHART

CLIMATE CONTROL UNIT INPUT/OUTPUT SIGNAL CHART

POWER SEAT CONTROL UNIT INPUT/OUTPUT SIGNAL CHART

POWER TILT/TELESCOPIC STEERING CONTROL UNIT (UART) INPUT/OUTPUT SIGNAL CHART

ONSTAR CONTROL UNIT INPUT/OUTPUT SIGNAL CHART

HANDSFREELINK CONTROL UNIT INPUT/OUTPUT SIGNAL CHART

KEYLESS ACCESS CONTROL UNIT INPUT/OUTPUT SIGNAL CHART

ACURALINK CONTROL UNIT INPUT/OUTPUT SIGNAL CHART

HDS INPUT DATA LIST

HDS Inputs and Commands

HDS INPUT DATA LIST

Outputs

HDS OUTPUT DATA LIST

Troubleshooting - B-CAN System Diagnosis Test Mode A

Note. AcuraLink can be used to easily check for B-CAN line failure (see SELF-DIAGNOSTIC FUNCTION ).

Do this diagnosis first if the symptom is related to the B-CAN system.

Note. Always turn the ignition switch within 3 seconds when prompted in the DTC troubleshooting procedures in this section.

1. Check the symptom against this list of B-CAN related systems: Gauge control module Exterior lights Turn signals Entry light control Interior lights Safety indicators Rear window defogger HandsFreeLink Horns (security and panic) Chimes (key, seat belt, lights-on and parking brake) Power windows Power window/moonroof timer Wiper/washer Security Keyless entry Power door locks Climate control Key interlock Dash light brightness Driving position memory Keyless access OnStar ('05-06 models) XM radio 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, then turn the ignition switch ON (II).
3. From the BODY ELECTRICAL SYSTEM SELECT menu, select UNIT INFORMATION, and then select CONNECTED UNIT listed to see if it is communicating with the HDS. MICU Gauge control module Combination switch control unit Relay control module Power seat control unit HandsFreeLink control unit Driver's MPCS unit Adaptive front lighting control unit OnStar control unit ('05-06 models) AcuraLink control unit (XM receiver) Keyless access control unit Climate control unit NOTE: If the unit is communicating with the HDS, DETECT will be displayed. If the unit is not communicating, "Not Available" will be displayed. Are all control units communicating with the HDS? YES - Go to step 4. NO - If any of them are not communicating, go to «B-CAN SYSTEM DIAGNOSIS TEST MODE B»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__troubleshooting-b-can-system-diagnosis-test) . If all units are not communicating or only the MICU is communicating, go to DTC B1000 troubleshooting (see «DTC B1000: COMMUNICATION BUS LINE ERROR (BUS-OFF)»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__dtc-b1000-communication-bus-line-error) ).
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, go to «B-CAN SYSTEM DIAGNOSIS TEST MODE C»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__troubleshooting-b-can-system-diagnosis-test) . Exterior lights Turn signals Entry light control Interior lights Horns (security and panic) Power windows Wiper/washer 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, seat belt and lights-on) Rear window defogger (climate control) Security Keyless entry Climate control Key interlock Dash light brightness Audio system Navigation Driving position memory HandsFreeLink Keyless access Adaptive front lighting
5. Record all DTCs, and sort them by DTC type using the DTC Troubleshooting.
6. Troubleshoot the DTC(s) in this order: Battery voltage DTCs. Internal error DTCs. Loss of communication DTCs. Begin troubleshooting with the lowest number first (Example: if DTC B1005 and B1008 are retrieved, begin by troubleshooting B1005). 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 in the HDS) as found by the 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 DTCs, and then check for loss of communication DTCs (use the DTC Troubleshooting to find the DTC type). Are any loss of communication DTCs indicated? YES - Go to step 3. NO - Replace the MICU.
3. Perform the input test for the unit not communicating with the HDS. MICU REFERENCE Unit not communicating MICU (see «MICU INPUT TEST»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__micu-input-test) ) Driver's MPCS unit (see «DRIVER'S MPCS UNIT INPUT TEST»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__drivers-mpcs-unit-input-test) ) Gauge control module (see «GAUGE CONTROL MODULE INPUT TEST»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__gauge-control-module-input-test) ) Relay control module (see «RELAY CONTROL MODULE INPUT TEST»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__relay-control-module-input-test) ) Combination switch control unit (see «COMBINATION SWITCH CONTROL UNIT INPUT TEST»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__combination-switch-control-unit-input-test) ) Power seat control unit (see «POWER SEAT CONTROL UNIT INPUT TEST»(/acura/rl/ii-2004-2008/remont/memory-modules/#driver-position-memory-system-dpms__power-seat-control-unit-input-test) ) HandsFreeLink control unit (see «CONTROL UNIT INPUT TEST»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#handsfreelink-system) ) Adaptive front lighting control unit (see «CONTROL UNIT INPUT TEST»(/acura/rl/ii-2004-2008/remont/exterior-lights/#adaptive-front-lighting-system__control-unit-input-test) ) Keyless access control unit (see «CONTROL UNIT INPUT TEST»(/acura/rl/ii-2004-2008/remont/door-locks-anti-theft-systems/#keyless-access-system__control-unit-input-test) ) Climate control unit (see «GENERAL TROUBLESHOOTING INFORMATION»(/acura/rl/ii-2004-2008/remont/automatic-hvac-system/#hvac) ) OnStar control unit (1) (see «ONSTAR SYSTEM CONTROL UNIT INPUT TEST»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#onstar-system-05-06-models) ) (1) '05-06 models

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 TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE D ). 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 controls the output devices (see B-CAN SYSTEM UNIT INPUT/OUTPUT INDEX ). Always turn the ignition switch within 3 seconds when prompted in the DTC troubleshooting procedures in this section.

1. Check for DTCs by selecting the TEST MODE MENU from the HDS. Are any DTCs indicated? YES - Go to B-CAN System Diagnosis Test Mode A (see «TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__troubleshooting-b-can-system-diagnosis-test) ). NO - Go to step 2.
2. Turn OFF the switch that controls the malfunctioning component.
3. Select DATA LIST from the TEST MODE MENU, and check the input of the switch that controls the 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 (see «B-CAN SYSTEM UNIT INPUT/OUTPUT INDEX»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__b-can-system-unit-inputoutput-index) ).
5. Check the relay if applicable, then check for a short in the wire between the relay and the component, relay and control unit or the component and control unit. Are the relay and the wire harness OK? YES - Replace the control unit that controls the component that will not turn OFF. NO - Replace the relay or repair 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. Is the switch and wire harness OK? YES - Replace the control unit that monitors the switch. NO - Replace the switch or repair 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 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 controls the output devices (see B-CAN SYSTEM UNIT INPUT/OUTPUT INDEX ). Always turn the ignition switch within 3 seconds when prompted in the DTC troubleshooting procedures in this section.

1. Check the fuse of the malfunctioning output device. Is the fuse OK? YES - Go to step 2. NO - Replace the fuse and recheck.
2. Check for DTCs by selecting the TEST MODE MENU from the HDS. Are any DTCs indicated ? YES - Go to B-CAN System Diagnosis Test Mode A (see «TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__troubleshooting-b-can-system-diagnosis-test) ). NO - Go to step 3.
3. Turn ON the switch that controls the malfunctioning component.
4. Select DATA LIST from the TEST MODE MENU, and check output signal for the malfunctioning component. Is there an output signal? YES - Go to step 5. NO - Go to step 9 .
5. Check the relay and ground, then check for an open or a short in the circuit for the malfunctioning component. Are the relay and 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 MISC. TEST from the TEST 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 - Replace the component. NO - Replace the control unit that controls the malfunctioning component.
9. Select DATA LIST from the TEST MODE MENU, and make sure the switch signal input for the malfunctioning system indicates a change when operated. Does the switch input indicated 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. Is the switch and the wire harness OK? YES - Replace the control unit that monitors the switch. NO - Replace the switch or repair the wire harness.

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

Special Tools Required

MPCS service connector 07WAZ-001010A

Test Mode 1

Do this diagnosis if the HDS is not available.

Scheme 7

1. Check the No. 7 (10 A) fuse and No. 21 (10 A) fuse in the driver's under-dash fuse/relay box. Are the fuses OK? YES - Go to step 2. NO - Find and repair the cause of the blown fuse.
2. Remove the left kick panel (see «TRIM REMOVAL/INSTALLATION - DOOR AREAS»(/acura/rl/ii-2004-2008/remont/exteriorinterior-trim/#interior-trim__trim-removalinstallation-door-areas) ), and the driver's dashboard under cover.
3. Turn the ignition switch ON (II), and move the interior lights switch to the "DOOR" position.
4. Connect the MPCS service connector (A) to the MCIC socket (B) in the driver's under-dash fuse/ relay box.
5. Wait 5 seconds, and watch the map lights. When the system enters Mode 1, the front and rear map lights will flash quickly once, and a double beep will be heard.
6. If there is a DTC, the map lights and ignition key light will blink, pause, then repeat the DTC as long as the ignition switch is ON (II). Is there a repeating DTC? YES - Count the blinks, then go to step 7. NO - Go to step 8 .
7. About 1 second after you go into self-diagnostic Mode 1, the map lights will indicate the DTC, and repeat it every 3 seconds. If there is more than one DTC, the system will indicate them in ascending order, beginning with the DTC with the lowest numerical value. Troubleshoot the DTCs as indicated below: DTC 2,3, 4 and 5 simultaneously: Check for an open in the LT GRN wire between MICU D11 and relay control module J7, LT GRN wire between MICU N28 and combination switch control unit No. 4 LT GRN wire between MICU J4 and driver's MPCS unit A28 and LT GRN wire between MICU N22 and gauge control module B17. If the wire is OK, substitute a known-good driver's under-dash fuse/relay box, under-hood fuse/relay box, gauge control module, wiper/washer switch and driver's MPCS unit one at a time, in that order, and recheck for the DTCs after each substitution. DTC 1 only: Go to MICU input test (see «MICU INPUT TEST»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__micu-input-test) ). DTC 2 only (no other DTCs present): Go to the relay control module input test (see «RELAY CONTROL MODULE INPUT TEST»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__relay-control-module-input-test) ). If all inputs are OK, substitute a known-good relay control module and then a MICU, one at a time, and then check for DTCs. If a DTC recurs after a substitution, replace that unit. DTC 3 only (no other DTCs present): Go to the driver's MPCS unit input test (see «DRIVER'S MPCS UNIT INPUT TEST»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__drivers-mpcs-unit-input-test) ). If all inputs are OK, substitute a known-good driver's MPCS unit and then a MICU, one at a time, and then check for DTCs. If a DTC recurs after a substitution, replace that unit. DTC 4 only (no other DTCs present): Go to the combination switch control unit input test (see «COMBINATION SWITCH CONTROL UNIT INPUT TEST»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__combination-switch-control-unit-input-test) ). If all inputs are OK, substitute a known-good wiper/washer switch and then a MICU, one at a time, and then check for DTCs. If a DTC recurs after a substitution, replace that unit. DTC 5 only (no other DTCs present): Go to the gauge control module input test (see «GAUGE CONTROL MODULE INPUT TEST»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__gauge-control-module-input-test) ). If all inputs are OK, substitute a known-good gauge control module and then a MICU, one at a time, and then check for DTCs. If a DTC recurs after a substitution, replace that unit. TROUBLESHOOTING CHART DTC Cause 1 The MICU cannot receive signals from the BUS communication line. 2 The MICU cannot receive signals from the relay control module communication line. 3 The MICU cannot receive signals from the driver's MPCS communication line. 4 The MICU cannot receive signals from the combination switch communication line. 5 The MICU cannot receive signals from the gauge control module.
8. Check for B-CAN DTCs indicated by the gauge control module (see «GAUGE CONTROL MODULE DTC DISPLAY»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system) ). Are any DTCs indicated? YES - Go to step 9. NO - Go to step 11 .
9. Record all DTCs and sort them by type using the DTC Troubleshooting.
10. Troubleshoot the DTCs in these order: Battery voltage DTCs Internal error DTCs Loss of communication DTCs (begin with the lowest number first; for example, if B1005 and B1008 are retrieved, troubleshoot B1005 first) Signal error DTCs Test Mode 2
11. Remove the MPCS service connector from the driver's under-dash fuse/relay box socket for 5-10 seconds, then re-insert it to enter Mode 2. When the system enters Mode 2, the front and rear map lights will flash two times quickly. NOTE: If the MPCS connector is disconnected for too short or too long of a time, or the ignition switch is turned OFF, the system will return to Test Model.
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 map lights will blink once. If the circuit is faulty, there will be no indication. MICU MICU REFERENCE Item Driver's door switch (OPEN) Front passenger's door switch (OPEN) Left rear door switch (OPEN) Right rear door switch (OPEN) Trunk lid latch switch (OPEN) Front passenger's door lock knob switch (UNLOCK) (1) Left rear door lock knob switch (UNLOCK) Right rear door lock knob switch (UNLOCK)' Audio security ground (when disconnected) Driver's seat belt switch (unbuckled) Brake pedal position switch (ON; brake pedal pressed) Passenger's door lock switch (LOCK/UNLOCK) Mirror select switch (LEFT, CENTER, RIGHT) Mirror switch (LEFT, RIGHT, UP, DOWN) (1) The front passenger's and door lock knob switches must be in the locked position when beginning the test. RELAY CONTROL MODULE RELAY CONTROL MODULE REFERENCE Item Windshield wiper switch (AUTO STOP/PARK) Hood switch (OPEN) A/C pressure switch/thermal protector (A/C ON) COMBINATION SWITCH CONTROL UNIT COMBINATION SWITCH CONTROL UNIT REFERENCE Item Turn signal switch (LEFT) Turn signal switch (RIGHT) Combination light switch (ON; each position) Dimmer switch (ON) Passing switch (ON) Windshield wiper switch (ON) Intermittent wiper dwell timer Windshield washer switch (ON) DRIVER'S MPCS UNIT DRIVER'S MPCS UNIT REFERENCE Item Power window master switch (Driver's window UP) Power window master switch (Driver's window DOWN) Power window master switch (Driver's window AUTO UP) Power window master switch (Driver's window AUTO DOWN) Power window master switch (Front passenger's window UP) Power window master switch (Front passenger's window DOWN) Power window master switch (Left rear window UP) Power window master switch (Left rear window DOWN) Power window master switch (Right rear window UP) Power window master switch (Right rear window DOWN) Driver's door key cylinder switch (1) (LOCK) Driver's door key cylinder switch (1) (UNLOCK) Driver's door lock switch (LOCK) Driver's door lock switch (UNLOCK) Driver's door lock knob switch (LOCK) Driver's door lock knob switch (UNLOCK) Driver's position memory switches (1,2, memo) Passenger's window switch Passenger's window switch (UP) Passenger's window switch (DOWN) Passenger's window switch (AUTO UP) Passenger's window switch (AUTO DOWN) Trunk lid opener switch (ON) Fuel fill door opener switch (ON) (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. GAUGE CONTROL MODULE GAUGE CONTROL MODULE REFERENCE Item Parking brake switch (ON; parking brake applied) Cruise control main SET/RESUME/CANCEL switch (ON; switch pressed) Transmission range switch (P, R, N, D) Washer fluid level switch (fluid removed) (Canada models) Brake fluid level switch (fluid removed) Illumination control switches (+, -) MID switches (Select/Reset, < INFO, INFO >) POWER SEAT CONTROL UNIT POWER SEAT CONTROL UNIT REFERENCE Item Power seat slide switch (FORWARD, BACKWARD) Power seat front up-down switch (UP, DOWN) Power seat rear up-down switch (UP, DOWN) Power seat recline switch (FORWARD, RECLINE) Power tilt/telescopic steering switch (UP, DOWN, PUSH, PULL) Rear head restraint tilt switch (ON) Do the map lights indicate proper switch operation? YES - Go to function and input test for the system related to the failure. NO - Repair the open, short, or replace the faulty switch.

Scheme 8

1. Turn the ignition switch ON (II).
2. Connect the MPCS service connector to the MCIC socket in the driver's under-dash fuse/relay box.
3. Wait 5 seconds, then watch the multi-information display. While in Test Mode 1, the DTCs that have been detected and stored individually by various B-CAN (body-controller area network) units, will be shown one by one on the multi-information display when the communication between the multiplex integrated control unit (MICU) and the gauge control module is normal. To scroll through the DTCs, press the select/reset switch on the steering wheel. The unit that has stored the code can be identified by the number shown on the multi-information display (MID). CONTROL UNIT REFERENCE UNIT Code (Control Unit I.D. Number) MICU 10 Relay control module 11 Driver's MPCS unit 30 Gauge control module 50 Climate control unit 51 Combination switch control unit 70 Adaptive front lighting control unit 73 Keyless access control unit 90 OnStar control unit ('05-06 models) 91 HandsFreeLink control unit 94 Power seat control unit 95 AcuraLink control unit (XM receiver) 97

How to clear the DTC

While in DTC indication status, press and hold down the SELECT/RESET switch button for about 13 seconds.

Scheme 9

Scheme 10

Scheme 11

Scheme 12

DTC B1000: Communication Bus Line Error (BUS-OFF)

1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the HDS. Is DTC B1000 indicated? YES - Go to step 5. NO - Intermittent failure. The communication bus line 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/rl/ii-2004-2008/remont/body-electrical/#battery) ) and the charging system.
5. Check for DTCs with the HDS. Are DTCs B1005, B1007, B1008, B1011, B1013, B1014, B1015, and B1016 also indicated? YES - Go to step 6. NO - Replace the MICU.
6. Disconnect the appropriate connector at each control unit in the table one at a time. Clear the DTC and wait for 6 seconds, then recheck for DTCs after each unit is disconnected. CONTROL UNIT REFERENCE Control Unit Appropriate Connector Gauge Control Module Connector B (28P) Relay Control Module Connector J (10P) Driver's MPCS Unit Connector A (40P) Combination Switch Control Unit Connector (8P) Power Seat Control Unit Connector A (40P) Climate Control Unit Connector (40P) HandsFreeLink Control Unit Connector (22P) OnStar Control Unit (1) Connector A (22P) AcuraLink Control Unit (XM receiver) Connector B (16P) Adaptive Front Lighting Control Unit Connector (40P) Keyless Access Control Unit Connector A (31P) (1) '05-06 models Is DTC B1000 indicated with each individual unit disconnected? YES - Go to step 7. NO - Replace the control unit that was disconnected and B1000 did not reset.
7. Disconnect all of the appropriate connectors for each of the units in the table. CONTROL UNIT REFERENCE Control Unit Appropriate Connector Gauge Control Module Connector B (28P) Relay Control Module Connector J (10P) Driver's MPCS Unit Connector A (40P) Combination Switch Control Unit Connector (8P) Power Seat Control Unit Connector A (40P) Climate Control Unit Connector (40P) HandsFreeLink Control Unit Connector (22P) OnStar Control Unit (1) Connector A (22P) AcuraLink Control Unit (XM receiver) Connector B(16P) Adaptive Front Lighting Control Unit Connector (40P) Keyless Access Control Unit Connector A (31P) (1) '05-06 models
8. Disconnect driver's under-dash fuse/relay box connectors X (39P), N (45P), J (30P), G (8P), D (17P), and T(6P).
9. Check for continuity between each of the driver's under-dash fuse/relay box terminals listed in the table below and body ground. CONNECTOR TERMINALS REFERENCE Connected Control Unit Driver's under-dash fuse/relay box terminal Gauge Control Module N22 Relay Control Module D11 Driver's MPCS Unit J4 Combination Switch Control Unit N28 Power Seat Control Unit G1 Climate Control Unit T3 HandsFreeLink Control Unit X27 OnStar Control Unit (1) G1 AcuraLink Control Unit (XM receiver) G1 Adaptive Front Lighting Control Unit D11 Keyless Access Control Unit X18 (1) '05-06 models Is there continuity? YES - Repair the short in the wire between the driver's under-dash fuse/relay box and the affected control unit. NO - Go to step 10.
10. Measure the voltage between each of the driver's under-dash fuse/relay box terminals listed in the table above and body ground. Is there less than 1 V? YES - Replace the driver's under-dash fuse/relay box. NO - Repair the short in the wire between the driver's under-dash fuse/relay box and the affected control unit.

DTC B1001: MICU Internal (CPU) Error; DTC B1002: 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 OFF, and then back ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the HDS. Is DTC B1001 and/or B1002 indicated? YES - Faulty MICU, replace the driver's under-dash fuse/relay box. NO - Intermittent failure, the system is OK at this time.

DTC B1005: MICU Lost Communication with Relay Control Module (RM Message)

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the HDS. Is DTC B1005 indicated? YES - Go to step 5. NO - Intermittent failure, the relay control module is OK at this time. Check for loose or poor connections between the relay control module and the driver's under-dash fuse/relay box. If the connections are good, check the battery condition (see «BATTERY TEST»(/acura/rl/ii-2004-2008/remont/body-electrical/#battery) ) and the charging system.
5. Check for DTCs with the HDS. Is DTC B1158 also indicated? YES - Do the relay control module input test (see «RELAY CONTROL MODULE INPUT TEST»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__relay-control-module-input-test) ). NO - Check for an open in the communication circuit between the MICU and the relay control module. If the circuit is OK, replace the MICU. If the circuit is bad, repair the open.

DTC B1007: MICU Lost Communication with Combination Switch Control Unit (HLSW Message)

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the HDS. Is DTC B1007 indicated? YES - Go to step 5. NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections between the MICU and the combination switch control unit, if the connections are good, check the battery condition (see «BATTERY TEST»(/acura/rl/ii-2004-2008/remont/body-electrical/#battery) ) and the charging system.
5. Check for DTCs with the HDS. Are DTCs B1062, B1155, and B2108 all indicated? YES - Do the combination switch control unit input test (see «COMBINATION SWITCH CONTROL UNIT INPUT TEST»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__combination-switch-control-unit-input-test) ). NO - Check for an open in the communication circuit between the MICU and the gauge control module. If the circuit is OK, replace the MICU. If the circuit is bad, repair the open.

DTC B1008: MICU Lost Communication with Gauge Control Module (A/T Message); DTC B1011: MICU Lost Communication with Gauge Control Module (VSP/NE Message)

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the HDS. Is DTC B1008 and/or B1011 indicated? YES - Go to step 5. NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections between the MICU and the gauge control module, if the connections are good, check the battery condition (see «BATTERY TEST»(/acura/rl/ii-2004-2008/remont/body-electrical/#battery) ) and the charging system.
5. Check for DTCs with the HDS. Are DTCs B1060, B1061, B1205, B1408*, B1616, B1805, B1808, B2106, and B2160 all indicated? (* : '05-06 models) YES - Do the gauge control module input test (see «GAUGE CONTROL MODULE INPUT TEST»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__gauge-control-module-input-test) ). NO - Check for an open in the communication circuit between the MICU and the gauge control module. If the circuit is OK, replace the MICU. If the circuit is bad, repair the open.

DTC B1013: MICU Lost Communication with Driver's MPCS Unit (ASLOCKSW Message); DTC B1014: MICU Lost Communication with Driver's MPCS Unit (DOORSW Message); DTC B1015: MICU Lost Communication with Driver's MPCS Unit (DRLOCKSW Message)

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the HDS. Is DTCs B1013, B1014, and/or B1015 indicated? YES - Go to step 5. NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections between the MICU and the driver's MPCS unit.
5. Check for DTCs with the HDS. Are DTCs B1064, B1065, B1181, B1182, B1405*, B1406*, B1407* B1613, B1614, B1615, and B1811 all indicated? (* : '05-06 models) YES - Do the driver's MPCS unit input test (see «DRIVER'S MPCS UNIT INPUT TEST»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__drivers-mpcs-unit-input-test) ). NO - Check for an open in the communication circuit between the MICU and the gauge control module. If the circuit is OK, replace the MICU. If the circuit is bad, repair the open.

DTC B1016: MICU Lost Communication with Keyless Access Control Unit (PANIC Message)

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the HDS. Is DTC B1016 indicated? YES - Go to step 5. NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections between the MICU and the keyless access control unit.
5. Check for DTCs with the HDS. Is DTCs B1066 also indicated? YES - Do the keyless access control unit input test (see «CONTROL UNIT INPUT TEST»(/acura/rl/ii-2004-2008/remont/door-locks-anti-theft-systems/#keyless-access-system__control-unit-input-test) ). NO - Check for an open in the communication circuit between the MICU and the gauge control module. If the circuit is OK, replace the MICU. If the circuit is bad, repair the open.

DTC B1032: MICU Collision Detection Signal (CDS) Input Error

Note. Before doing this troubleshooting procedure, review SRS Precautions and Procedures (see PRECAUTIONS AND PROCEDURES ) and General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 13

Scheme 14

Scheme 15

1. Clear the DTC with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Check for DTC with the HDS. Is DTC B1032 indicated? YES - Go to step 4. NO - Intermittent failure the system is OK at this time. Go to Troubleshooting Intermittent Failures (see «TROUBLESHOOTING INTERMITTENT FAILURES»(/acura/rl/ii-2004-2008/remont/airbag/#srs-supplemental-restraint-system__troubleshooting-intermittent-failures) ).
4. Turn the ignition switch OFF. Disconnect the negative cable from the battery, and wait for 3 minutes (see «PRECAUTIONS AND PROCEDURES»(/acura/rl/ii-2004-2008/remont/airbag/#srs-supplemental-restraint-system) ).
5. Disconnect SRS unit connector A (28P) from the SRS unit (see step 7 under «PRECAUTIONS AND PROCEDURES»(/acura/rl/ii-2004-2008/remont/airbag/#srs-supplemental-restraint-system) ).
6. Disconnect under-dash fuse/relay box connector P (30P).
7. Measure the resistance between the No. 21 terminal of SRS unit connector A (28P) and the No. 21 terminal of under-dash fuse/relay box connector P (30P). There should be 0-1.0 ohms. Is the resistance as specified? YES - Go to step 8. NO - Open in the BLU (YEL) wire of dashboard wire harness A; replace dashboard wire harness A.
8. '05-06 models: disconnect OnStar control unit connector A (22P) (see «CONTROL UNIT REPLACEMENT»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#onstar-system-05-06-models) ).
9. Measure the resistance between the No. 21 terminal of SRS unit connector A (28P) and body ground. There should be an open circuit or at least 1 Mohms. Is the resistance as specified? YES - Go to step 10. NO - Short to ground in dashboard wire harness A; replace dashboard wire harness A.
10. Measure the voltage between the No. 21 terminal of SRS unit connector A (28P) and body ground. There should be 1.5 V or less. Is the voltage as specified? YES - Faulty SRS unit; replace the SRS unit (see «SRS UNIT REPLACEMENT»(/acura/rl/ii-2004-2008/remont/airbag/#srs-supplemental-restraint-system) ). NO - Short to power in dashboard wire harness A; replace dashboard wire harness A.

DTC B1050: Communication Bus Line Error; DTC B1150: Communication Bus Line Error; DTC B1200: Communication Bus Line Error; DTC B1250: Communication Bus Line Error; DTC B1400: Communication Bus Line Error; DTC B1600: Communication Bus Line Error; DTC B1750: Communication Bus Line Error; DTC B1800: Communication Bus Line Error; DTC B2100: Communication Bus Line Error; DTC B2150: Communication Bus 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. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the HDS. Are DTCs B1050, B1150, B1200, B1250, B1400*, B1600, B1750, B1800, B2100, and/or B2150 indicated? (* : '05-06 models) YES - Go to step 5. NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections at the MICU and B-CAN connected units in the table.
5. Check for DTCs with the HDS. CONNECTOR TERMINALS REFERENCE Driver's under-dash fuse/relay box connector B-CAN connected unit connector Connector D(17P) No. 11 terminal Under-hood fuse/relay box connector J (10P) No. 7 terminal Connector D (17P) No. 11 terminal Adaptive front lighting control unit 40P connector No. 15 terminal Connector N (45P) No. 22 terminal Gauge control module connector B (28P) No. 17 terminal Connector N (45P) No. 28 terminal Combination switch control unit 8P connector No. 4 terminal Connector J(21P) No. 4 terminal Driver's MPCS unit connector A (40P) No. 28 terminal Connector X (39P) No. 18 terminal Keyless access control unit connector A(31P) No. 11 terminal Connector T(6P) No. 3 terminal Climate control unit 40P connector No. 24 terminal Connector X (39 P) No. 27 terminal HandsFreeLink control unit 22P connector No. 14 terminal Connector G (6P) No. 1 terminal Power seat control unit connector A (40P) No. 40 terminal Connector G (6P) No. 1 terminal AcuraLink control unit (XM receiver) connector B(16P) No. 5 terminal Connector G (6P) No. 1 terminal OnStar control unit (1) connector A (22P) No. 3 terminal (1) '05-06 models Is DTC B1000 also indicated? YES - Troubleshoot DTC B1000. NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections at the MICU and B-CAN connected units in the table.

DTC B1080: Power Supply Circuit (IG1 Line) Input Error for Relay Control Module and 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 16

Scheme 17

1. Clear the DTC with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the HDS. Is DTC B1080 indicated? YES - Go to step 5. NO - Intermittent failure, check for loose or poor connections at under-hood fuse/relay box connector J (10P) and driver's under-dash fuse/relay box connector D (17P). If the connections are OK, check the battery condition (see «BATTERY TEST»(/acura/rl/ii-2004-2008/remont/body-electrical/#battery) ) and the charging system.
5. Check the MICU IG1 power supply No. 21 (10 A) fuse in the driver's under-dash fuse/relay box. Is the fuse OK? YES - Go to step 6. NO - Replace the fuse, and recheck for DTCs.
6. Turn the ignition switch OFF.
7. Disconnect under-hood fuse/relay box connector J (10P), check for loose or poor connections. If the terminals are bent, loose or corroded, repair them as necessary and recheck the system.
8. Reconnect under-hood fuse/relay box connector J (10P).
9. Turn the ignition switch ON (II).
10. Measure the voltage between the No. 8 terminal of the under-hood fuse/relay box connector J (10P) and body ground. Is there battery voltage? YES - Go to step 11. NO - Open, or loose connection, in the wire between the under-hood fuse/relay box and the driver's under-dash fuse/relay box. Repair the wire, and recheck for DTCs.
11. Measure the voltage between the No. 10 terminal of under-hood fuse/relay box connector J (10P) and body ground. Is there less than 0.5 V? YES - Faulty relay control module; replace the under-hood fuse/relay box. NO - Repair an open in the wire between the under-hood fuse/relay box and G301. If the wire is OK, inspect the G301.

DTC B2152: Driver's MPCS Unit 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 OFF, and then back ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the HDS. Is DTC B2152 indicated? YES - Replace the driver's MPCS unit. NO - Intermittent failure, the system is OK at this time.

DTC B2155: Driver's MPCS Unit Lost Communication with MICU (MICU Message); DTC B2156: Driver's MPCS Unit Lost Communication with MICU (MIRRORSW Message)

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the HDS. Are DTCs B2155 and/or B2156 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 MPCS unit and the MICU.
5. Check for DTCs with the HDS. Are DTCs B1055, B1157, B1255, B1605, B1806, B1810, B1855, and/or B2107 also indicated? YES - Faulty MICU, replace the driver's under-dash fuse/relay box (see «DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/body-electrical/#under-dash-fuserelay-box) ). NO - Do the driver's MPCS unit input test (see «DRIVER'S MPCS UNIT INPUT TEST»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__drivers-mpcs-unit-input-test) ).

DTC B2157: Driver's MPCS Unit Lost Communication with Gauge Control Module (ILLUMI Message); DTC B2160: Driver's MPCS Unit Lost Communication with Gauge Control Module (VSP/NE Message)

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the HDS. Is DTC B2157 and/or B2160 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 MPCS unit and the gauge control module.
5. Check for DTCs with the HDS. Are DTCs B1011, B1060, B1205, B1408*, B1207, and/or B1805 also indicated? (*: '05-06 models) YES - Do the gauge control module input test (see «GAUGE CONTROL MODULE INPUT TEST»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__gauge-control-module-input-test) ). NO - Do the driver's MPCS unit input test (see «DRIVER'S MPCS UNIT INPUT TEST»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__drivers-mpcs-unit-input-test) ).

DTC B2159: Driver's MPCS Unit Lost Communication with Keyless Access Control Unit (REMOTE Message)

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Check for DTCs with the HDS. Is DTC B2159 indicated? YES - Go to step 4. NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections.
4. Check for DTCs with the HDS. Is DTC B1161 also indicated? YES - Do the keyless access control unit input test (see «CONTROL UNIT INPUT TEST»(/acura/rl/ii-2004-2008/remont/door-locks-anti-theft-systems/#keyless-access-system__control-unit-input-test) ). NO - Do the driver's MPCS unit input test (see «DRIVER'S MPCS UNIT INPUT TEST»(/acura/rl/ii-2004-2008/remont/communication-devices/#multiplex-integrated-control-system__drivers-mpcs-unit-input-test) ).

MICU Input Test

Note. Before testing, troubleshoot B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 18

1. Turn the ignition switch OFF.
2. Remove the left kick panel (see «TRIM REMOVAL/INSTALLATION - DOOR AREAS»(/acura/rl/ii-2004-2008/remont/exteriorinterior-trim/#interior-trim__trim-removalinstallation-door-areas) ).
3. Disconnect the driver's under-dash fuse/relay box connectors. NOTE: All connector views are wire side of female terminals. * Connector view shown rotated 180° from actual position in the under-dash fuse/relay box.
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, make these input tests at the connectors. 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. CONNECTOR TERMINALS REFERENCE Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained H14 ORN Ignition switch ON (II) Attach to ground: The ignition key light should come on. Blown No. 13 (15 A) fuse in the under-hood fuse/relay box Faulty ignition key light An open in the wire W4 PNK Ignition switch ON (II), interior lights switch (in the roof console) DOOR switch pushed Attach to ground: The individual map lights should come on. Blown No. 6 (7.5 A) fuse in the driver's under-dash fuse/relay box Faulty map light Faulty roof console An open in the wire D11 LTGRN Under all conditions (Relay control module connector J (10P) and adaptive front lighting control unit 40P connector disconnected) Check for continuity between the D11 terminal and relay control module J (10P) connector No. 7 terminal, and the D11 terminal and adaptive front lighting control unit 40P connector No. 15 terminal: There should be continuity. An open in the wire Check for continuity to ground: There should be no continuity. A short to ground in the wire N1 LTGRN Under all conditions (Power tilt/ telescopic steering control unit connector A (16P) disconnected) Check for continuity between the N1 terminal and power tilt/telescopic steering control unit connector A (16P) No. 11 terminal: There should be continuity. An open in the wire Check for continuity to ground: There should be no continuity. A short to ground in the wire N22 LTGRN Under all conditions (Gauge control module connector B (28P) disconnected) Check for continuity between the N22 terminal and gauge control module connector B (28P) No. 17 terminal: There should be continuity. An open in the wire Check for continuity to ground: There should be no continuity. A short to ground in the wire N28 LTGRN Under all conditions (Wiper/ washer switch 8P connector disconnected) Check for continuity between the N28 terminal and combination switch control unit 8P connector No. 4 terminal: There should be continuity. An open in the wire Check for continuity to ground: There should be no continuity. A short to ground in the wire J4 LTGRN Under all conditions (Driver's MPCS unit connector A (40P) disconnected) Check for continuity between the J4 terminal and driver's MPCS unit connector A (40P) No. 4 terminal: There should be continuity. An open in the wire Check for continuity to ground: There should be no continuity. A short to ground in the wire G1 LTGRN Under all conditions (Power seat control unit connector A (40P), OnStar control unit connector A (22P) (1) , Acura Link control unit (XM receiver) connector B (16P) disconnected) Check for continuity between the G1 terminal and power seat control unit connector A (40P) No. 40 terminal, G1 terminal and OnStar control unit connector A (22P) No. 3 terminal (1) , G1 terminal and AcuraLink control unit (XM receiver) connector B (16P) No. 5 terminal: There should be continuity. An open in the wire Check for continuity to ground: There should be no continuity. A short to ground in the wire T3 LTGRN Under all conditions (Climate control unit 40P connector disconnected) Check for continuity between the T3 terminal and climate control unit 40P connector No. 24 terminal: There should be continuity. An open in the wire Check for continuity to ground: There should be no continuity. A short to ground in the wire X18 LTGRN Under all conditions (Keyless access control unit connector A (31P) disconnected) Check for continuity between the X18 terminal and keyless access control unit connector A (31P)No. 11 terminal: There should be continuity. An open in the wire Check for continuity to ground: There should be no continuity. A short to ground in the wire X27 LTGRN Under all conditions (HandsFreeLink control unit connector (22P) disconnected) Check for continuity between the X27 terminal and HandsFreeLink control unit connector (22P) No. 14 terminal: There should be continuity. An open in the wire Check for continuity to ground: There should be no continuity. A short to ground in the wire H4 GRY Under all conditions (Driver's MPCS unit connector A (40P) and power window master switch 6P connector disconnected) Check for continuity between the H4 terminal and driver's MPCS unit connector A (40P) No. 8 terminal, H4 terminal and power window master switch 6P connector No. 6 terminal: There should be continuity. An open in the wire Check for continuity to ground: There should be no continuity. A short to ground in the wire J1 GRY Under all conditions (Left rear power window switch 14P connector and moonroof motor/ control unit 10P connector disconnected) Check for continuity between the J1 terminal and left rear power window switch 14P connector No. 2 terminal, J1 terminal and moonroof motor/ control unit 10P connector No. 4 terminal: There should be continuity. An open in the wire Check for continuity to ground: There should be no continuity. A short to ground in the wire X15 GRY Under all conditions (Front passenger's MPCS unit connector A (28P) and right rear power window switch 14P connector disconnected) Check for continuity between the X15 terminal and front passenger's MPCS unit connector A (28P) No. 4 terminal, and J1 terminal and right rear power window switch 14P connector No. 2 terminal: There should be continuity. An open in the wire Check for continuity to ground: There should be no continuity. A short to ground in the wire (1) '05-06 models
6. Reconnect the connectors to the MICU, and make these input tests at the connectors. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, the MICU must be faulty, replace the driver's under-dash fuse/relay box (see «DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/body-electrical/#under-dash-fuserelay-box) ). CONNECTOR TERMINALS REFERENCE Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained P1 BRN Under all conditions Measure the voltage to ground: There should be less than 0.5 V. Poor ground (G502) An open in the wire E9 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V. Poor ground (G601) An open in the wire H9 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V. Poor ground (G601) An open in the wire

Gauge Control Module Input Test

Note. Before testing, troubleshoot B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 19

1. Turn the ignition switch OFF.
2. Remove the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/rl/ii-2004-2008/remont/gauges-instrument-panels/#gauges__gauge-control-module-replacement) ).
3. Disconnect gauge control module connectors A (20P) and B (28P).
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. Reconnect the connectors to the gauge control module, and make these input tests at the connectors. 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. CONNECTOR TERMINALS REFERENCE Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained A7 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V. Poor ground(G501) An open in the wire A8 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V. Poor ground(G501) An open in the wire B1 PNK Ignition switch ON (II) Measure the voltage to ground: There should be battery voltage. Blown No. 21 (10 A) fuse in the driver's under-dash fuse/relay box An open in the wire B2 WHT Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 15 (40 A) fuse in the under-hood fuse/relay box Blown No. 7 (10 A) fuse in the driver's under-dash fuse/relay box An open in the wire
6. Disconnect the A (20P) and B (28P) connectors from the gauge control module, and make these input tests at the connector. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, replace the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/rl/ii-2004-2008/remont/gauges-instrument-panels/#gauges__gauge-control-module-replacement) ). CONNECTOR TERMINALS REFERENCE Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained B17 LTGRN Driver's under-dash fuse/relay box connector N (45P) disconnected Check for continuity between the B17 terminal and driver's under-dash fuse/relay box connector N (45P) No. 22 terminal: There should be continuity. An open in the wire Check for continuity to ground: There should be no continuity. A short to ground in the wire

Combination Switch Control Unit Input Test

Note. Before testing, troubleshoot B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 20

1. Turn the ignition switch ON (II), remove the driver's dashboard undercover (see «DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/exteriorinterior-trim/#dashboard) ), and the driver's dashboard lower cover (see «DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/exteriorinterior-trim/#dashboard) ), then remove the steering column covers (see «STEERING COLUMN REMOVAL AND INSTALLATION»(/acura/rl/ii-2004-2008/remont/manual-power-steering/#power-steering-system-electronic-power-steering-system__steering-column-removal-and-installation) ).
2. Disconnect the 8P connector from the wiper/washer switch (combination switch control unit).
3. 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 4.
4. Reconnect the connector to the wiper/washer switch, and make these input tests at the connector. 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 5. CONNECTOR TERMINALS REFERENCE Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained 3 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V. Poor ground(G501) An open in the wire 8 WHT Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 7 (10 A) fuse in the driver's under-dash fuse/relay box An open in the wire 7 YEL Ignition switch ON (II) Measure the voltage to ground: There should be battery voltage. Blown No. 21 (10 A) fuse in the driver's under-dash fuse/relay box An open in the wire
5. Disconnect the 8P connector from the wiper/washer switch, and make these input tests at the connector. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, the combination switch control unit must be faulty, replace the wiper/washer switch. CONNECTOR TERMINALS REFERENCE Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained 4 LTGRN Under all conditions Check for continuity between No. 4 terminal and the driver's under-dash fuse/relay box connector N (45P) No. 28 terminal: There should be continuity. An open in the wire Under all conditions (Driver's under-dash fuse/relay box connector N (45P) disconnected) Check for continuity to ground: There should be no continuity. A short to ground in the wire

Relay Control Module Input Test

Note. Before testing, troubleshoot B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 21

1. Turn the ignition switch ON (II), and remove the under-hood fuse/relay box undercover (see «REMOVAL AND INSTALLATION»(/acura/rl/ii-2004-2008/remont/body-electrical/#under-hood-fuserelay-box) ).
2. Disconnect under-hood fuse/relay box connector J (10P).
3. 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 4.
4. Reconnect the connector to the under-hood fuse/relay box, and make these input tests at the connector. 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 5. CONNECTOR TERMINALS REFERENCE Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained J10 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V. Poor ground (G301) An open in the wire J8 YEL Ignition switch ON (II) Measure the voltage to ground: There should be battery voltage. Blown No. 21 (10 A) fuse in the driver's under-dash fuse/relay box An open in the wire
5. Disconnect under-hood fuse/relay box connector J (10P), and make these input tests at the connector. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, the relay control module must be faulty, replace the under-hood fuse/relay box (see «REMOVAL AND INSTALLATION»(/acura/rl/ii-2004-2008/remont/body-electrical/#under-hood-fuserelay-box) ). CONNECTOR TERMINALS REFERENCE Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained J7 LT GRN Under all conditions Check for continuity between J7 terminal and the driver's under-dash fuse/relay box connector D (17P)No. 11 terminal: There should be continuity. An open in the wire Under all conditions (Driver's under-dash fuse/relay box connector D(17P) disconnected) Check for continuity to ground: There should be no continuity. A short to ground in the wire

Driver's MPCS Unit Input Test

Note. Before testing, troubleshoot B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 22

1. Turn the ignition switch OFF.
2. Remove the driver's door panel (see «FRONT DOOR PANEL REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/exterior-body-panels/#doors__front-door-panel-removalinstallation) ).
3. Disconnect driver's MPCS unit connector A (40P).
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. Reconnect the connector to the driver's MPCS unit, and make these input tests at the connector. 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. CONNECTOR TERMINALS REFERENCE Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained A5 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V. Poor ground (G601) An open in the wire A7 WHT Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 15 (40 A) fuse in the under-hood fuse/relay box Blown No. 7 (10 A) fuse in the driver's under-dash fuse/relay box An open in the wire A25 YEL Ignition switch ON (II) Measure the voltage to ground: There should be battery voltage. Blown No. 21 (10 A) fuse in the driver's under-dash fuse/relay box An open in the wire
6. Disconnect driver's MPCS connector A (40P), and make these input tests at the connector. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, the driver's MPCS unit must be faulty, replace it. CONNECTOR TERMINALS REFERENCE Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained A8 GRY Under all conditions (Driver's under-dash fuse/relay box connector H (14P)and power window master switch 6P connector disconnected) Check for continuity between the A8 terminal and driver's under-dash fuse/relay box connector H (14P) No. 4 terminal, and A8 terminal and power window master switch 6P connector No. 6 terminal: There should be continuity. An open in the wire Check for continuity to ground: There should be no continuity. A short to ground in the wire A28 LTGRN Under all conditions (Driver's under-dash fuse/relay box connector J (21P) disconnected) Check for continuity between the A28 terminal and driver's under-dash fuse/relay box connector J (21P) No. 4 terminal: There should be continuity. An open in the wire Check for continuity to ground: There should be no continuity. A short to ground in the wire

See also:
• GENERAL TROUBLESHOOTING INFORMATION
• SELF-DIAGNOSTIC FUNCTION
• SELF-DIAGNOSTIC FUNCTION
• B1575
• B1055
• B1060
• B1062
• B1064
• B1066
• B1075
• B1076
• B1077
• B1078
• B1132
• B1133
• B1134
• B1135
• B1136
• B1147
• B1152
• B1155
• B1157
• B1158
• B1161
• B1166
• B1168
• B1170
• B1171
• B1173
• B1175
• B1176
• B1177
• B1181
• B1202
• B1205
• B1225
• B1235
• B1238
• B1240
• B2982
• B2983
• B2984
• B2985
• B2987
• B1255
• B1275
• B1279
• B1280
• B1281
• B1401
• B1405
• B1406
• B1407
• B1408
• B1425
• B1426
• B1428
• B1601
• B1605
• B1610
• B1613
• B1626
• B1775
• B1776
• B1779
• B1780
• B1792
• B1802
• B1805
• B1806
• B1811
• B1825
• B1826
• B1827
• B1828
• B1829
• B1835
• B1836
• B1837
• B1840
• B1841
• B1842
• B1843
• B1844
• B1845
• B1846
• B1847
• B1848
• B2105
• B2106
• B2107
• B2108
• B2125
• B2126
• B2127
• B2128
• B2129
• B2130
• B2131
• B2132
• B2134
• B2135
• B2136
• B2142
• B2175
• B2176
• B2177
• B2178
• B2179
• B2180
• B2181
• B2182
• B2183
• B2184
• B2185
• B2186
• B2187
• B2188
• B2189
• B2190
• B2191
• POWER SEAT CONTROL UNIT INPUT TEST
• CONTROL UNIT INPUT TEST
• CONTROL UNIT INPUT TEST
• CONTROL UNIT INPUT TEST
• TRIM REMOVAL/INSTALLATION - DOOR AREAS
• BATTERY TEST
• PRECAUTIONS AND PROCEDURES
• TROUBLESHOOTING INTERMITTENT FAILURES
• DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL/INSTALLATION
• GAUGE CONTROL MODULE REPLACEMENT
• DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION
• STEERING COLUMN REMOVAL AND INSTALLATION
• REMOVAL AND INSTALLATION
• FRONT DOOR PANEL REMOVAL/INSTALLATION
• TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A
• GAUGE CONTROL MODULE DTC DISPLAY
• LOSS OF COMMUNICATION CROSS REFERENCE CHART
• B1000
• B1001
• B1005
• B1007
• B1008
• B1013
• B1016
• B1032
• B1050
• B1080
• B2152
• B2155
• B2157
• B2159
• MICU INPUT TEST
• DRIVER'S MPCS UNIT INPUT TEST
• GAUGE CONTROL MODULE INPUT TEST
• RELAY CONTROL MODULE INPUT TEST
• COMBINATION SWITCH CONTROL UNIT INPUT TEST
• B-CAN SYSTEM UNIT INPUT/OUTPUT INDEX