Checking Program QOS - III
| Test | Test Equipment | Test | Notes | Nominal | ||
|---|---|---|---|---|---|---|
| Step | Multimeter | |||||
| MKM - 587 - A | ||||||
| of | ||||||
| between | Value | |||||
| 03 | Voltmeter range 20V, DC | Engine running signal | K76, ter. 6 | K76, ter. 10 | · Engine running | |
| · Measurement at wiring harness plug | > 11.5 V | |||||
| Troubleshooting: | Nominal Value: | Cause of Fault: |
· Ignition "OFF"
· Remove charging indicator relay K79 from relay socket
· Measure voltage with multimeter
from: Charging indicator relay K79, relay socket ter. 3
| to: Charging indicator relay K79, relay socket ter. 4 | ||
|---|---|---|
| · Ignition "ON" | > 11.5 V | · Line interrupted |
from: Fuse F8 (C8 for Monterey)
to: Charging indicator relay K79, relay socket ter. 3
or
· Line interrupted
from: Charging indicator relay K79, relay socket ter. 4
to: Ground
· Ignition "OFF"
· Measure resistance with multimeter
| from: Control unit QOS - III K76, wiring harness plug ter. 6 | ||
|---|---|---|
| to: Charging indicator relay K79, relay socket ter. 1 | approx. 0 W | · Line interrupted or short circuit to voltage |
from: Control unit QOS - III K76, wiring harness plug ter. 6
to: Charging indicator relay K79, relay socket ter. 1
| If nominal values are attained: | · Line interrupted |
from: Charging indicator relay K79, relay socket ter. 5
to: Alternator G2 (G6 for Monterey), wiring harness plug ter. D+
or
· Charging indicator relay K79 defective
or
| · Alternator G2 (G6 for Monterey) defective |