Required Special Tool
- MB991223: Harness Set
Scheme 15
Scheme 16
Scheme 17
Scheme 18
- STEP 1. Check the multi-center display ground circuit at the multi-center display connector C-09 by backprobing. Do not disconnect the multi-center display connector C-09 and measure at the harness side. Measure the resistance between terminal 6 and ground by backprobing. Q: Is the resistance value less than two ohm? YES: go to Step 4 . NO: Go to Step 2.
- STEP 2. Check the multi-center display connector C-09 for damage. Q: Is the multi-center display connector C-09 in good condition? YES: Go to Step 3. NO: Repair or replace it.
- STEP 3. Check the harness wires between multi-center display connector C-09 and ground. NOTE: After checking joint connector C-78, check the wires. If joint connector C-78 is damaged, repair or replace it. Q: Is the harness wires between multi-center display connector C-09 and ground in good condition? YES: There is no action to be taken. NO: Repair them. The multi-center display should work normally.
- STEP 4. Check the multi-center display power supply circuit (battery) at the multi-center display connector C-09 by backprobing. Do not disconnect the multi-center display connector C-09 and measure at the harness side. Measure the voltage between terminal 1 and ground by backprobing. Q: Is the voltage approximately 12 volts (battery positive voltage)? YES: Go to Step 7 . NO: Go to Step 5.
- STEP 5. Check multi-center display connector C-09 for damage. Q: Is multi-center display connector C-09 in good condition? YES: Go to Step 6. NO: Repair or replace it. The multi-center display should work normally.
- STEP 6. Check the harness wires between C-09 and battery. NOTE: After checking joint connector C-78 and intermediate connector C-89, check the wires. If joint connector C-78 and intermediate connector C-89 are damaged, repair or replace them. Q: Is the harness wires between C-09 and battery in good condition? YES: There is no action to be taken. NO: Repair them. The multi-center display should work normally.
- STEP 7. Check the multi-center display power supply circuit [ignition switch (ACC)] at the multi-center display connector C-09 by backprobing. Do not disconnect the multi-center display connector C-09 and measure at the harness side. Turn the ignition switch to "ACC" position. Measure the voltage between terminal 3 and ground by backprobing. Q: Is the voltage approximately 12 volts (battery positive voltage)? YES: go to Step 10 . NO: Go to Step 8.
- STEP 8. Check multi-center display connector C-09 for damage. Q: Is multi-center display connector C-09 in good condition? YES: Go to Step 9. NO: Repair or replace it. The multi-center display should work normally.
- STEP 9. Check the harness wires between C-09 and ignition switch (ACC). NOTE: After checking joint connector C-78 and junction block connector C-108 and C-111, check the wires. If joint connector C-78 and junction block connector C- 108 and C-111 are damaged, repair or replace them. Q: Is the harness wires between C-09 and ignition switch (ACC) in good condition? YES: There is no action to be taken. NO: Repair them. The multi-center display should work normally.
- STEP 10. Check the multi-center display power supply circuit [ignition switch (IG1)] at the multi-center display connector C-09 by backprobing. Do not disconnect the multi-center display connector C-09 and measure at the harness side by backprobing. Turn the ignition switch to "ON" position. Measure the voltage between terminal 2 and ground by backprobing. Q: Is the voltage approximately 12 volts (battery positive voltage). YES: Replace the multi-center display. The multi-center display should work normally. NO: Go to Step 11.
- STEP 11. Check the multi-center display connector C-09 for damage. Q: Is multi-center display connector C-09 in good condition? YES: Go to Step 12. NO: Repair or replace it. The multi-center display should work normally.
- STEP 12. Check the harness wires between multi-center display connector C-09 and ignition switch (IG1). NOTE: After checking joint connector C-78 and junction block connector C-111 and C-112, check the wires. If joint connector C-78 and junction block connector C- 111 and C-112 are damaged, repair or replace them. Q: Is the harness wires between multi-center display connector C-09 and ignition switch (IG1) in good condition? YES: There is no action to be taken. NO: Repair them. The multi-center display should work normally.
Scheme 19
Scheme 20
- MB991223: Harness Set
Scheme 21
Scheme 22
- 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.
- STEP 2. Check the compass sensor connector D-23 and compass-ECU connector C- 38 by backprobing. Do not disconnect the compass sensor connector D-23 and compass-ECU connector C-38 measure at the harness side. 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.
- 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.
- STEP 4. Check the compass-ECU connector C-37 and multi center display connector C-09 by backprobing. Do not disconnect the compass-ECU connector C-37 and multi-center display connector C-09, measure at the harness side. 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.