Checking Program - Cruise Control Monterey
| Test | Test Equipment | Test | Notes | Nominal | |
|---|---|---|---|---|---|
| Step | Multimeter | ||||
| MKM-587-A | of | ||||
| between | |||||
| Value: | |||||
| 01 | Voltmeter range 20V, DC | ||||
| Voltage supply K14 | |||||
| K14, XB9 ter. 5 | |||||
| K14, XB9 ter. 9 | |||||
| · Disconnect wiring harness plug XB9 from control unit K14 |
· Ignition "ON"
· Cruise control main switch "ON"
· Ignition "OFF"
| · Measurements at wiring harness plug XB9 |
0 V
> 11.5 V
0 V
| Troubleshooting | Nominal Value | Cause of Fault |
· Ignition "OFF"
· Disconnect the cruise control main relay K23 from the fuse and relaybox
· Measure voltage with multimeter
from: Cruise control main relay K23,relay socket XX20 ter. 2
| to: Ground |
· Ignition "ON"
| > 11.5 V | · Fuse C4 defective |
or
· Line interrupted
from: Wiring harness plug XX20 ter. 2
| to: Fuse C4 |
· Ignition "OFF"
· Bridge cruise control main relay K23, relay socket XX20 ter. 2 and ter. 4
· Measure voltage with multimeter
from: Control unit K14, wiring harness plug XB9 ter. 5
| to: Ground |
· Ignition "ON"
| · Ignition "OFF" | > 11.5 V |
0 V
| · Line interrupted or short circuit to voltage |
from: Relay socket XX20 ter. 4
to: Wiring harness plug XB9 ter. 5
· Measure voltage with multimeter
from: Cruise control main relay K23, relay socket XX20 ter. 1
| to: Ground | |
|---|---|
| · Line interrupted or short circuit to voltage |
from: Wiring harness plug XX20 ter. 4
| to: Diode V27, wiring harness plug XX15 ter. 3 | ||
|---|---|---|
| · Ignition "ON" | > 11.5 V | or |
| · Line interrupted or short circuit to voltage | ||
| · Keep cruise control main switch S172 "OFF" depressed | 0 V | from: Wiring harness plug XX15 ter. 4 |
to: Wiring harness plug XI6 ter. 3
| or | |
|---|---|
| · Release cruise control main switch S172 | > 11.5 V |
| 0 V | · Line interrupted or short circuit to voltage |
from: Relay socket XX20 ter. 1,
| to: Cruise control main switch S172, wiring harness plug XI6 ter. 6 | |
|---|---|
| · Ignition "OFF" | or |
· Diode V27 defective
or
· Cruise control main switch S172 defective
· Remove bridge from cruise control main relay K23, relay socket XX20
· Measure voltage with multimeter
from: Cruise control main relay K23, relay socket XX20 ter. 1
| to: Ground |
· Ignition "ON"
| 0 V | · Cruise control main switch S172 defective | |
|---|---|---|
| or | ||
| · Keep cruise control main switch "ON" depressed | > 11.5 V | · Line interrupted |
from: Cruise control main switch S172, wiring harness plug XI6 ter. 2
to: Fuse C4
or
· Line interrupted or short circuit to voltage
from: Relay socket XX20 ter. 1
to: Cruise control main switch S172, wiring harness plug XI6 ter. 5
· Disconnect ground terminal from the battery
· Measure resistance with multimeter
| from: Control unit K14, wiring harness plug XB9 ter. 9 | ||
|---|---|---|
| to: Ground | approx. 0 W | · Line interrupted |
from: Wiring harness plug XB9 ter. 9
| to: Ground |
· Measure resistance with multimeter
from: Cruise control main relay K23, relay socket XX20 ter. 3
| to: Ground | ||
|---|---|---|
| · Ignition "OFF" | approx. 0 W | · Line interrupted |
from: Relay socket XX20 ter. 3
to: Ground
| If nominal values are attained: | · Cruise control main relay K23 defective |