Checking Program QOS - III
| Test | Test Equipment | Test | Notes | Nominal | |
|---|---|---|---|---|---|
| Step | Multimeter | ||||
| MKM - 587 - A | |||||
| of | |||||
| between | Value | ||||
| 07b | Voltmeter range 20V, DC | Glow relay 2 K78 (Monterey only) | Gl | ||
| Ground | · Ignition "OFF" |
· Bridge control unit QOS - III K76 wiring harness plug ter. 12 to ground
· Ignition "ON"
· Measurement at glow plugs
| · Remove bridge from control unit QOS - III wiring harness plug ter. 12 to ground after measurement | approx. 6 V | |
|---|---|---|
| Troubleshooting: | Nominal Value: | Cause of Fault: |
· Ignition "OFF"
· Disconnect wiring harness plug from glow relay 2 K78
· Measure voltage with multimeter
from: Glow relay 2 K78, wiring harness plug ter. (SWGE 0.85)
| to: Ground | ||
|---|---|---|
| · Ignition "ON" | > 11.5 V | · Line interrupted |
from: Fuse C8
to: Glow relay 2 K78, wiring harness plug ter. (SWGE 0.85)
· Measure voltage with multimeter
from: Glow relay 2 K78, wiring harness plug ter. (RTWS)
| to: Ground | > 11.5 V | · Line interrupted |
from: Fuse FL5
to: Glow relay 2 K78, wiring harness plug ter. (RTWS)
· Measure resistance with multimeter
from: Glow relay 2 K78, wiring harness plug ter. (SWGN)
| to: Control unit QOS - III K76, wiring harness plug ter. 12 | approx. 0 W | · Line interrupted or short circuit to voltage |
from: Glow relay 2 K78, wiring harness plug ter. (SWGN)
to: Control unit QOS - III K76, wiring harness plug ter. 12
· Measure resistance with multimeter
from: Glow relay 2 K78, wiring harness plug ter. (SWGN)
| to: Ground | > 20 MW | · Short circuit to ground |
from: Glow relay 2 K78, wiring harness plug ter. (SWGN)
to: Control unit QOS - III K76, wiring harness plug ter. 12
· Disconnect wiring harness plug from pre - resistor R22
· Measure resistance with multimeter
from: Glow relay 2 K78, wiring harness plug ter. (SWGE 3.0)
| to: Pre - resistor R22, wiring harness plug ter. 2 | approx. 0 W | · Line interrupted or short circuit to voltage |
from: Glow relay 2 K78, wiring harness plug ter. (SWGE 3.0)
to: Pre - resistor R22, wiring harness plug ter. 2
· Measure resistance with multimeter
from: Pre - resistor R22, wiring harness plug ter. 1
| to: Glow plugs R5 | approx. 0 W | · Line interrupted or short circuit to voltage |
from: Pre - resistor R22, wiring harness plug ter. 1
to: Glow plugs R5
· Measure resistance with multimeter
from: Pre - resistor R22, component harness plug ter. 1
to: Pre - resistor R22, component harness plug ter. 2
| + 0.3 W | · Pre - resistor R22 defective | |
|---|---|---|
| If nominal values are attained: | · Glow relay 2 K78 defective |