Inspection Procedure 2
Compass Is Not DisplayedCompass Circuit:
Connectors: D-23:
CIRCUIT OPERATION.
Compass sensor signal through the compass-ECU and multi-center display.
TECHNICAL DESCRIPTION (COMMENT)
If the compass is only not displayed on the multi-center display, the cause may be a malfunction of the compass-ECU.
TROUBLESHOOTING HINTS
- Malfunction of the compass-ECU
- Damaged harness wires and connectors
DIAGNOSIS
Required Special Tool:
- MB991223: Harness Set
STEP 1. Check the compass-ECU connector C-38 and compass sensor connector D-23 for damage.
Q: Are the compass-ECU connector C-38 and compass sensor D-23 in good condition?
YES: Go to Step 2.
NO: Repair or replace it. Refer to Harness Connector Inspection.
STEP 2. Check the compass sensor connector D-23 and compass-ECU connector C-38 by backprobing.
1. Do not disconnect the compass sensor connector D-23 and compass-ECU connector C-38, measure at the harness side.
2. Measure the resistance between compass sensor connector D-23 and compass-ECU connector C-38 by backprobing.
Q: Is the resistance value less than two ohm?
YES: Go to Step 3.
NO: Repair or replace it. Refer to Harness Connector Inspection.
STEP 3. Check the compass-ECU connector C-37 and multi-center display connector C-09 for damage.
Q: Are the compass-ECU connector C-37 and multi-center display connector C-09 In good condition?
YES: Go to Step 4.
NO: Repair or replace it. Refer to Harness Connector Inspection.
STEP 4. Check the compass-ECU connector C-37 and multi-center display connector C-09 by backprobing.
1. Do not disconnect the compass-ECU connector C-37 and multi-center display connector C-09, measure at the harness side.
2. Measure the resistance between compass-ECU connector C-37 and multi-center display connector C-09 by backprobing.
Q: Is the resistance value less than two ohm?
YES: Replace the compass-ECU or compass sensor.
NO: Repair or replace it. Refer to Harness Connector Inspection.