Multiplex Integrated Control System: Other Honda Insight ZE2

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, the DTCs which 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 MICU and the gauge control module is normal. To scroll through the DTCs, press the SEL/RESET button.

Scheme 7

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

CONTROL UNIT SPECIFICATIONS

How to clear DTCs

1. 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)»(ref-360288-S18725751082010042800000) ).
2. While in Test Mode 1, press and hold down the SEL/RESET button for at least 10 seconds to clear the DTCs.

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 (33.33 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 8

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 9

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 10

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 in LOCK (0).

1. In the sleep mode, the multiplex integrated control system stops functioning (communication and CPU control) when 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 the sleep mode immediately wake up and begin to function.
3. When the ignition switch is turned to LOCK (0) with all the doors and the hatch closed, and the driver's door is opened, then closed, there is a delay about 40 seconds before the control unit goes from the wake-up mode to the sleep mode.
4. The sleep mode will not function if any door or the hatch 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 MICU has 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 operate normally.

When a CPU problem or an abnormal power supply voltage is detected, the MICU moves 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 of the data from the B-CAN circuit cannot be received within a specified time, or an unusual combination of data is recognized, the MICU moves to the software fail-safe mode. The data that was not received is forced to a pre-programmed value.

Power Supply Voltage Monitoring Function

The MICU monitors the power supply voltage (back-up voltage). If the voltage goes below 10 V, the MICU will not store a DTC.

MICU SPECIFICATIONS

Lighting System (Headlights, parking lights, side markers, license plate lights, and taillights) ()

The MICU control of the lighting system is based on inputs from the ignition switch(II) and the combination light switch.

MICU SPECIFICATIONS

Turn Signal/Hazard Warning Light

The MICU control of the turn signal/hazard warning lights is based on inputs signals from the turn signal switch and the hazard warning switch.

MICU SPECIFICATIONS

Entry Light*

The MICU control of the ceiling light is based on inputs from each switch and B-CAN data.

MICU SPECIFICATIONS

Cargo Area Light

The MICU control of the cargo area light is based on inputs from the hatch latch switch.

MICU SPECIFICATIONS

Daytime Running Lights

The MICU control of the headlights as daytime running lights is based on inputs from each switch and B-CAN data.

MICU SPECIFICATIONS

Windshield Wiper/Washer (Vehicle Speed Sense)

The MICU control of the windshield wiper motor and the windshield washer motor is based on inputs from each switch and B-CAN data.

MICU SPECIFICATIONS

Rear Window Wiper/Washer (With reverse linked rear wiper)

The MICU control of the rear window wiper motor and the rear window washer motor is based on inputs from each switch.

MICU SPECIFICATIONS

Windshield/Rear Window Washer

The MICU control of the windshield washer and the rear window washer motor is based on inputs from each switch.

MICU SPECIFICATIONS

Collision Detection Signal (CDS)

The MICU control of the door lock actuators is based on IG1 and SRS (CDS) inputs.

MICU SPECIFICATIONS

Power Door Locks*

The MICU control of the door lock actuators is based on inputs from each switch.

MICU SPECIFICATIONS

Keyless Entry System*

The MICU control of the door lock actuators is based on inputs from each switch and B-CAN data.

MICU SPECIFICATIONS

Key-in Reminder

The MICU control of the door lock actuators is based on inputs from each switch.

MICU SPECIFICATIONS

Key Interlock

The MICU control of the key interlock solenoid is based on inputs from each switch.

MICU SPECIFICATIONS

Security Alarm System*

The MICU control of the exterior lights and the horn is based on inputs from each switch and B-CAN data.

MICU SPECIFICATIONS

Security Answer Back*

The MICU control of the exterior lights and the horn is based on keyless signals sent by B-CAN data.

MICU SPECIFICATIONS

Auto Door Lock*

The MICU control of the door lock actuators is based on inputs from each switch and B-CAN data.

MICU SPECIFICATIONS

Auto Door Unlock*

The MICU control of the door lock actuators is based on inputs from each switch.

MICU SPECIFICATIONS

Keyless Panic Function

The MICU control of the keyless PANIC function is based on PANIC signals sent by B-CAN data.

MICU SPECIFICATIONS

HDS Inputs and Commands

Certain inputs happen so quickly that 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 for newer vehicles it is not uncommon to see system function tests that are not supported.

Make sure that the most current software is loaded.

Input

DATA LIST

Function Test

HDS DESCRIPTION

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 11

1. Compare the symptom with this list of B-CAN related systems: Gauge control module Immobilizer Climate control HandsFreeLink Exterior lights Entry light control Turn signal/hazard warning lights Horn (security and panic) Wiper/washer Power windows Security Keyless entry Power door locks Key interlock Is the symptom related to the B-CAN system? YES -Go to step 2. NO -Go to the for the system with the symptom.
2. Connect the HDS to the data link connector (A), then turn the ignition switch to ON (II).
3. From the BODY ELECTRICAL menu, select UNIT INFORMATION, and then select CONNECTED UNITS listed to see if the following control units are communicating with the HDS. MICU Gauge control module Immobilizer-keyless control unit Climate control unit HandsFreeLink control unit NOTE: If a unit is communicating with the HDS, DETECT will be displayed. If a unit is not communicating or the vehicle is not equipped, "Not Available" will be displayed. The HDS only checks the connected units status one time when BODY ELECTRICAL is selected. To recheck the status after repair, reboot the HDS and repeat step 3 . 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 (see «TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE B»(ref-360288-S20468250402010042800000) ). If all units are not communicating or only the MICU is communicating, go to DTC B1000 troubleshooting (see «DTC B1000: COMMUNICATION CIRCUIT ERROR (BUS-OFF)»(ref-360288-S10849250832010042800000) ).
4. Select the system that has the problem from the BODY ELECTRICAL 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 (see «TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE C»(ref-360288-S26132604932010042800000) ). If the problem is related to one of the following items and the system that is malfunctioning does not work or turn on, go to B-CAN System Diagnosis Test Mode D (see «TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE D»(ref-360288-S35492475272010042800000) ). Exterior lights Entry light control Horn (security and panic) Wiper/washer Power windows Power door locks Turn signal/hazard warning lights Key interlock If the problem is related to one of the following items, go to the troubleshooting for that individual system. Gauge control module Immobilizer Climate control HandsFreeLink Security Keyless entry
5. Record all DTCs, and sort them by DTC type into these categories: Battery voltage DTCs. Internal error DTCs. Loss of communication DTCs. Signal error DTCs.
6. Troubleshoot the DTC(s) in the order listed above.

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 (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

1. Using the HDS, select the system that has the symptom from the BODY ELECTRICAL menu.
2. Select DTCs, and then check for loss of communication DTCs. Are any loss of communication DTCs indicated? YES -Go to step 3. NO -Replace the MICU (see «REMOVAL AND INSTALLATION»(ref-360306-S00499054042010042800000) ).
3. Do the power, ground, and communication part of the input test for the unit(s) not communicating with the HDS.

MICU SPECIFICATIONS

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 run or 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 control the output devices (see HDS INPUTS AND COMMANDS ).

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»(ref-360288-S10744684002010042800000) ). 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.
5. Test the relay that controls the device that does not stop or turn off, if applicable. If the relay tests OK, 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 wire harness 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. Test 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 work or come on.

Note. If the component does not turn off or stop, go to B-CAN System Diagnosis Test Mode C (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE C ). 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 HDS INPUTS AND COMMANDS ).

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»(ref-360288-S10744684002010042800000) ). 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. Test the relay and ground that controls the device that does not work, if applicable. If the relay and ground test OK, then check for an open or a short in the circuit for the malfunctioning component. Is the relay and the circuit OK? YES -Go to step 6. NO -Replace the relay, or repair the 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 input and the ground 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 -Inspect the ground for the component. If OK, replace the component. NO -Replace the control unit that controls the malfunctioning components
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 indicate ON when the switch Is ON? YES -Replace the control unit that controls the malfunctioning component. NO -Go to step 10.
10. Test 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/replace the wire harness.

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

Special Tools Required

MPCS (MCIS) Service Connector 07WAZ-001010A