The illustration shows '03 model.
The Multi-information system displays these information when the appropriate buttons are pressed.
- Present status of the air conditioning system when it is manually controlled.
- Clock.
- Present fuel economy and average fuel economy (provided by the PCM based on the injection pulse signal and vehicle speed signal).
- Range: the distance you can drive with the fuel remaining.
- Trip meter.
- Outside air temperature, (provided by the climate control unit based on the temperature sensor data).
- Compass: the direction of the vehicle is heading based on the data from the electrical compass unit.
| Symptom | Diagnostic procedure | Also check for |
|---|---|---|
| Compass shows wrong direction | Do compass calibration (see COMPASS CALIBRATION ) | Check for a disconnected electrical compass unit. |
| No picture is shown on the display | Do multi-information display troubleshooting (see MULTI-INFORMATION DISPLAY TROUBLESHOOTING ) | The display brightness setting. |
| Fuel consumption display does not work | Do fuel consumption display troubleshooting (see FUEL CONSUMPTION DISPLAY TROUBLESHOOTING ) | |
| A/C and outside temperature display do not work | Do A/C and outside temperature display troubleshooting (see A/C AND OUTSIDE TEMPERATURE DISPLAY TROUBLESHOOTING ) |
SYMPTOM TROUBLESHOOTING INDEX
Note. You should do this procedure any time the electrical compass unit is replaced. You should do this procedure in an open area away from buildings, power lines, and other vehicles.
- Check the No. 5 (10 A) *1 or No. 4 (7.5 A) *2 and No. 8 (7.5 A) fuses in the driver's under-dash fuse/relay box, and the No. 9 (15 A) and No. 11 (10 A) fuses in the passenger's under-dash fuse/relay box. *1 : '03 model *2 : '04-'06 models
- Press and hold the CLOCK and TRIP buttons until the display changes (about 1 second).
- Press the Calibrate (MODE) button.
- Press the Set (FAN) button. Calibrate will start blinking, and the direction display will change to "___ ___".
- Drive the vehicle slowly in 2 complete circles.
- Press the ZONE (A/C) button to display the current zone setting.
- Compare the zone setting displayed to the map. If the zone is incorrect, use the MODE or A/C buttons to select the proper zone.
- Lock in the select zone by pressing the SET button.
- Press the CLOCK, TRIP, or RESET button to complete the calibration and return to the normal display.
Note. Check the brightness switch position on the display.
- Check the No. 11 (10 A) fuse in the passenger's under-dash fuse/relay box, and reinstall the fuse if it is OK. Is the fuse OK? YES - Go to step 2. NO - Replace the fuse and recheck.
- Check the No. 9 (15 A) fuse in the passenger's under-dash fuse/relay box, and reinstall the fuse if it is OK. Is the fuse OK? YES - Go to step 3. NO - Replace the fuse and recheck.
- Disconnect display unit connector A.
- Turn the ignition switch ON (II).
- Measure voltage between body ground and display unit connector A terminal No. 8. Is there battery voltage? YES - Go to step 6. NO - Check the No. 5 (10 A) *1 or No. 4 (7.5 A) *2 fuse in the driver's under-dash fuse/relay box and recheck. If the fuse is OK, check for an open in the wire. *1 : '03 model *2 : '04-'06 models
- Turn the ignition switch OFF.
- Check for continuity between display unit connector A terminal No. 5, No. 10 and body ground.
Is there continuity?
- YES - Replace the display unit.
- NO - Go to the display unit input test (see «MULTI-INFORMATION DISPLAY UNIT INPUT TEST»(/acura/mdx/i-2000-2006/remont/communication-devices/#multi-information-system-without-navigation) ).
- Disconnect PCM connector B and display unit connector A.
- Check for continuity between PCM connector B terminal No. 2 and display unit connector A terminal No. 19. Is there continuity? YES - Go to step 3. NO - Check for an open in the wire between PCM connector B terminal No. 2 and display unit connector A terminal No. 19.
- Check for continuity between the PCM connector B terminal IV and body ground. Is there continuity? YES - Repair short to ground in PNK wire. NO - Go to step 4.
- Disconnect the fuel gauge sending unit 5P connector.
- Check for continuity between the display unit connector A terminal No. 14 and fuel gauge sending unit 5P connector terminal No. 2. Is there continuity? YES - Go to step 6. NO - Check for these problems: A faulty fuel gauge sending unit. An open in the wire between fuel gauge sending unit connector terminal No. 2 and display unit connector A terminal No. 14.
- Disconnect gauge assembly connector C.
- Check for continuity between display unit connector A terminal No. 4 and gauge assembly connector C terminal No. 6 *1 or No. 7 *2 *1 : '03 model *2 : '04-'06 models Is there continuity? YES - Check for these problems: A short to ground in the LTGRN/WHT wire. A short to ground in the YEL/BLU wire. If the wires are OK, replace the display unit. NO - Repair open in the wire between gauge assembly connector C and display unit connector A.
- Check for climate control unit DTCs. If you find any, repair the problem, and clear the DTC before continuing.
- Disconnect climate control unit connector A and display unit connector B.
- Check for continuity between display unit connector B terminal No. 2 and climate control unit connector A terminal No. 16. Is there continuity? YES - Go to step 4. NO - Repair open in the wire between climate control unit connector A terminal No. 16 and display connector B terminal No. 2.
- Check for continuity between display unit connector B terminal No. 3 and climate control unit connector A terminal No. 15. Is there continuity? YES - Go to step 5. NO - Repair open in the wire between climate control unit connector A terminal No. 15 and display unit connector B terminal No. 3.
- Check for continuity between display unit connector B terminal No. 4 and climate control unit connector A terminal No. 8. Is there continuity? YES - Check for these problems: A short to ground in the RED/GRN wire. A short to ground in the GRN/ORN wire. A short to ground in the YEL/BLU wire. If the wires are OK, replace the display unit. NO - Check for these problems: A faulty outside air temperature sensor input to the climate control unit. A faulty climate control unit. A faulty outside air temperature sensor.
- Remove the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/mdx/i-2000-2006/remont/entertainment-systems/#audio-system__audio-unit-removalinstallation) ).
- Disconnect the connector A (20P) and connector B (5P) from the display unit (C).
- 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.
- With the display unit still disconnected, make these input tests at the connector by back probing each terminal. 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.
- Reconnect the connector to the display unit, and perform the following 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 display unit must be faulty; replace it.
| Cavity | Wire | Test Condition | Test: Desired result | Possible cause if result is not obtained |
|---|---|---|---|---|
| A1 | WHT/BLU | Under all conditions | Check for voltage to ground: There should be battery voltage. | Blown No. 54 (40 A) fuse in the under-hood fuse/relay box Blown No. 11 (10 A) fuse in the passenger's under-dash fuse/relay box An open in the wire |
| A2 | WHT/RED | Ignition switch ON (II) | Check for voltage to ground: There should be battery voltage. | Blown No. 54 (40 A) fuse in the under-hood fuse/relay box Blown No. 9 (15 A) fuse in the passenger's under-dash fuse/relay box Blown No. 8 (7.5 A) fuse in the driver's under-dash fuse/relay box Faulty accessory power socket relay Poor ground (G651) An open in the wire |
| A8 | YEL/RED *1 ORN *2 | Ignition switch ON (II) | Check for voltage to ground: There should be battery voltage. | Blown No.5 (10A) *1 or No.4 (7.5A) *2 fuse in the driver's under-dash fuse/relay box Faulty ignition switch An open in the wire |
| A5 | BLK | Under all conditions | Check for voltage to ground: There should be less than 1 V. | Poor ground (G501) An open in the wire |
| A10 | BLK | Under all conditions | Check for voltage to ground: There should be less than 1 V. | Poor ground (G502) An open in the wire |
| A4 | LTGRN/WHT | Ignition switch ON (II) | Check for voltage to ground: There should be battery voltage. | Faulty gauge assembly An open in the wire |
| A14 | YEL/BLU | Ignition switch ON (II) with the fuel gauge sending unit float at EMPTY position | Check for voltage to ground: There should be 5 V or more. | Faulty gauge assembly Faulty fuel gauge sending unit Poor ground (G501) An open in the wire A short to ground in the wire |
| A17 | ORN/BLU | Ignition switch ON (ID | Check for voltage to ground: There should be about 4 V. | Faulty electrical compass unit An open in the wire A short to ground in the wire |
| A7 | BLU/RED | Ignition switch ON (II) | Check for voltage to ground: There should be about 4 V. | Faulty electrical compass unit An open in the wire A short to ground in the wire |
| A16 | GRN/WHT | Ignition switch ON (II) | Check for voltage to ground: There should be about 4 V. | Faulty electrical compass unit An open in the wire A short to ground in the wire |
| A6 | WHT | Ignition switch ON (ID | Check for voltage to ground: There should be about 4 V. | Faulty electrical compass unit An open in the wire |
| B2 | YEL/BLU | Ignition switch ON (ID | Check for voltage to ground: There should be about 5 V. | Faulty climate control unit A short in the wire An open in the wire |
| B3 | GRN/ORN | Ignition switch ON (II) | Check for voltage to ground: There should be about 5 V. | Faulty climate control unit A short in the wire An open in the wire |
| B4 | RED/GRN | Ignition switch ON (II) | Check for voltage to ground: There should be about 5 V. | Faulty climate control unit A short in the wire An open in the wire |
DISPLAY UNIT (RECONNECTED)
- Remove the headliner (see «HEADLINER REMOVAL/INSTALLATION»(/acura/mdx/i-2000-2006/remont/exteriorinterior-trim/#interior-trim__headliner-removalinstallation) ).
- Disconnect the 6P connector (A) from the electrical compass unit (B).
- 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.
- Reconnect the connector to the electrical compass unit, and perform the following input tests at the connectors. If any test indicates a problem, find and correct the cause, them recheck the system. If all input tests prove OK, the electrical compass unit must be faulty; replace it, and do the compass calibration (see «COMPASS CALIBRATION»(/acura/mdx/i-2000-2006/remont/communication-devices/#multi-information-system-without-navigation__compass-calibration) ). ELECTRICAL COMPASS UNIT (RECONNECTED) Cavity Wire Test Condition Test: Desired result Possible cause if result is not obtained 2 BLK Under all conditions Check for voltage to ground: There should be less than 1 V. Poor ground (G652) An open in the wire 1 YEL/RED (1) ORN (2) Ignition switch ON (II) Check for voltage to ground: There should be battery voltage. Blown No. 5 (10 A) (1) or No. 4 (7.5 A) (2) fuse in the driver's under-dash fuse/relay box An open in the wire 3 WHT Under all conditions Check for voltage to ground: There should be about 4 V. Faulty display unit An open in the wire A short to ground in the wire 4 GRN/WHT Under all conditions Check for voltage to ground: There should be about 4 V. Faulty display unit An open in the wire A short to ground in the wire 5 BLU/RED Under all conditions Check for voltage to ground: There should be about 4 V. Faulty display unit An open in the wire A short to ground in the wire 6 ORN/BLU Under all conditions Check for voltage to ground: There should be about 4 V. Faulty display unit An open in the wire A short to ground in the wire (1) '03 Model (2) '04-06 Models