There has been an abnormal update. There is a loss of communications with the active control station. The power train control processor (PCP) and the active control station do not communicate.
Note: The PCP and the active control station communicate on the dedicated data link for the control station.
Troubleshooting:
If the active control station is the master control station, continue to troubleshoot with the test for the master control station. Refer to Troubleshooting, " MID PCP MID 1822 FMI 09". If the active control station is on control stations data link, continue with this procedure.
Test Step 1. DETERMINE THE CONTROL STATION.
- Determine if the vessel is equipped with one control station and one master control station.
Expected Result:
The active station is on the control station data link.
Results:
- YES - The vessel is equipped with one control station and one master control station. Go to Test Step 2.
- NO - The vessel is equipped with 3 or more stations. Go to Test Step 9.
Test Step 2. CHECK THE ELECTRICAL CONNECTIONS AND WIRING.
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| Illustration 1 | g03325937 |
- Ensure that the keyswitch is OFF.
- Inspect the harnesses and wiring for the following conditions:
- Corrosion
- Abrasion
- Pinch points
- Incorrect attachment
Expected Result:
All harnesses are in good condition.
Results:
- OK - All harnesses are in good condition. Go to Test Step 3.
- NOT OK - All harnesses are not in good condition.
Repair: Repair the harnesses or replace the harnesses.
STOP
Test Step 3. VERIFY THAT THE CABLE IS CORRECT.
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| Illustration 2 | g00946956 |
- Use a DVM in order to verify the correct cable pinout. Refer to Illustration 2. Refer to Table 1.
Show/hide table
Table 1 Circuit Name PCP Connector Pin Number Master Control Station Pin Number +Battery 1 11 -Battery 2 12 CAN data link + 3 7 CAN data link - 4 8 CAN Shield 5 9 - Ensure that the CAN termination loop jumpers are installed at the end of the cable.
- Measure the resistance from pin 5 on the PCP connector to pin 6 on the PCP connector.
- Measure the resistance from pin 6 on the control station connector to pin 7 on the control station connector.
Expected Result:
The resistance is less than 10 Ohms.
Results:
- OK - The resistance is less than 10 Ohms for all measurements. Go to Test Step 4.
- NOT OK - Resistance is greater than 10 ohms.
Repair: Repair as required.
STOP
Test Step 4. VERIFY THE CORRECT NUMBER OF TERMINATING RESISTORS.
Verify that there is NO terminating resistor that is connected at the control station. The terminating resistors for the data link for the control station are located in the hardware. Do not connect any terminating resistors to the PCP control station if the vessel is equipped with less than two stations.
NO terminating resistors should be connected to the data link for the control station.
Expected Result:
The number of terminating resistors is correct.
Results:
- OK - The number of terminating resistors is correct. Go to Test Step 5.
- NOT OK - Remove the extra terminating resistors.
STOP
Test Step 5. MEASURE THE VOLTAGE AT THE CONTROL STATION.
- Ensure that the keyswitch is OFF.
- Measure the voltage at the batteries.
- Disconnect the 8-pin connector on the data link cable from the integrated control head or disconnect the connector from the control station processor.
- Turn the keyswitch ON.
- Use a digital volt meter (DVM) in order to measure the voltage between pin 1 and pin 2 on the 8-pin data link cable.
Expected Result:
The voltage is equal to the measured battery voltage minus 2 V. For example, on a 24 VDC system the measured PCP voltage is approximately 22 VDC. For a system that operates at 12 VDC the PCP voltage is approximately 10 VDC.
Results:
- OK - The voltage is correct. Go to Test Step 6.
- NOT OK - The voltage IS NOT correct.
Repair: Go to the Special Instruction, REHS0354, "Charging System Troubleshooting".
STOP
- NOT OK - The voltage is 0 VDC. Repair the harness or replace the harness.
STOP
Test Step 6. VERIFY THE VOLTAGE AT THE PCP CONTROL STATION DATA LINK CONNECTOR.
- Turn the keyswitch OFF.
- Disconnect the 8-pin connector for the data link cable from the control station connector on the PCP.
- Turn the keyswitch ON.
- Use a DVM in order to measure the voltage between pin 1 and pin 2 on the 8-pin connector.
Expected Result:
The voltage is equal to the measured battery voltage minus 2 V. For example, on a 24 VDC system the measured PCP voltage is approximately 22 VDC. For a system that operates at 12 VDC the PCP voltage is approximately 10 VDC.
Results:
- OK - The voltage is correct.
Repair: Replace the cable.
STOP
- NOT OK - The voltage is not correct.
Repair: Go to the Special Instruction, REHS0354, "Charging System Troubleshooting".
STOP
Test Step 7. MEASURE THE RESISTANCE THROUGH THE DATA LINK CABLE FOR THE CONTROL STATION (SHORT CIRCUIT TEST).
- Turn the keyswitch OFF.
- Disconnect the control station ICH or the CSP.
- Disconnect the data link for the control station from the PCP.
- Measure the resistance between pin 3 (CAN+) and pin 4 (CAN -) on the 8-pin connector. Wiggle the harness during the measurement in order to reveal an intermittent condition.
- Continue to test with the combinations of pins that are listed in Table 2.
| Measure from
8-pin connector |
Circuit name | Measure to | Circuit name |
| 3 | CAN data link + | 1 | +PWR master |
| 3 | CAN data link + | 2 | -PWR master |
| 3 | CAN data link + | 5 | CAN shield |
| 3 | CAN data link + | 6 | CAN term loop - |
| 3 | CAN data link + | 7 | CAN term loop + |
| 4 | CAN data link - | 1 | +PWR master |
| 4 | CAN data link - | 2 | -PWR master |
| 4 | CAN data link - | 5 | CAN shield |
| 4 | CAN data link - | 6 | CAN term loop - |
| 4 | CAN data link - | 7 | CAN term loop + |
Expected Result:
The resistances are greater than 20000 Ohms.
Results:
- OK - The resistances are greater than 20000 Ohms. Go to Test Step 8.
- NOT OK - The resistances ARE NOT greater than 20000 Ohms.
Repair: Replace the cable.
STOP
Test Step 8. MEASURE THE RESISTANCE THROUGH THE DATA LINK CABLE FOR THE CONTROL STATION (OPEN CIRCUIT TEST).
- Turn the keyswitch OFF.
- Disconnect the control station ICH or the CSP.
- Disconnect the data link for the control station from the PCP.
- Install a jumper between pin 3 (CAN+) and pin 4 (CAN -) on the 8-pin connector.
- Measure the resistance between pin 7 (CAN+) and pin 8 (CAN -) on the 12-pin connector for the PCP. Wiggle the harness during the measurement in order to reveal an intermittent condition.
- Insert a jumper between pin 1 (+battery) and pin 2 (-battery) on the 8-pin connector that is located at the control station.
- Measure the resistance between pin 11 (+battery) on the 12-pin connector and pin 12 on the 12 pin connector for the PCP. Wiggle the harness during the measurement in order to reveal an intermittent condition.
Expected Result:
The resistance is less than 20 Ohms.
Results:
- OK - The resistance is less than 20 Ohms.
Repair: Temporarily replace the ICH or (CSP).
After the repair, verify that the diagnostic code is NOT active.
STOP
- NOT OK - The resistance IS NOT less than 20 Ohms.
Repair: Replace the cable.
STOP
Test Step 9. INSPECT THE ICH OR CSP AND THE PCP DATA LINK CONNECTIONS FOR THE MASTER CONTROL STATION
Inspect the harnesses and wiring for the following conditions:
- Corrosion
- Abrasion
- Pinch points
- Incorrect attachment
Expected Result:
The harnesses and wiring are in good condition.
Results:
- OK - The harnesses and wiring are in good condition. Go to Test Step 10.
- NOT OK - Repair the harnesses and wiring or replace the harnesses and wiring.
STOP
Test Step 10. VERIFY THE WIRING HARNESS FOR THE CONTROL STATION. THE VESSEL IS EQUIPPED WITH THREE OR MORE STATIONS.
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| Illustration 3 | g01261664 |
|
(1) TEE Connector
(2) Terminating Resistor | |
Note: A TEE connector (1) and terminating resistors (2) are required.
Use a DVM in order to verify the correct cable pinouts. Refer to Table 3.
| Circuit Name | PCP Connector Pin Number | Connector for the Master Control Station |
| +Battery | 1 | 1 |
| -Battery | 2 | 2 |
| CAN data link + | 6 | 6 |
| CAN data link - | 5 | 5 |
| Can shield | 4 | 4 |
| Starter Lockout | 3 | 3 |
Expected Result:
Results:
- OK - Go to Test Step 11.
- NOT OK -
Repair: Repair the cable or replace the cable.
STOP
Test Step 11. VERIFY THE CORRECT NUMBER OF TERMINATING RESISTORS.
Verify that there are two terminating resistors that are connected to the data link for the control station. The terminating resistors for the data link for the control station are located at the end of the runs for the data link.
- Disconnect the data link for the control station from the PCP and from each control station on the data link.
- Use a DVM in order to measure the resistance between pin 3 and pin 4 on the connector for the PCP.
Expected Result:
The resistance is between 57 and 63 Ohms.
Results:
- OK - The resistance is between 57 and 63 Ohms. Go to Test Step 12.
- NOT OK - The resistance is 120 Ohms.
Repair: Add the missing terminating resistor to the data link run.
STOP
- NOT OK - The resistance is less than 63 Ohms. There is an extra terminating resistor in the circuit.
Repair: Verify that the termination loops on the connectors are not connected. Repair the connectors.
STOP
- NOT OK - The resistance is greater than 20000 Ohms. There is a broken wire in the circuit or there are no terminating resistors installed on the harness.
Repair: Verify that the terminating resistors are installed. If they are, there could be an open circuit in the harness. Disconnect each section.
After the repair, verify that the diagnostic code is NOT active.
STOP
Test Step 12. MEASURE THE RESISTANCE THROUGH THE DATA LINK CABLE FOR THE CONTROL STATION. (SHORT CIRCUIT TEST)
- Turn the keyswitch OFF.
- Disconnect the control station ICH or CSP.
- Disconnect the data link for the control station from the PCP.
- Disconnect the termination resistors.
- Measure the resistance between pin 3 (CAN+) and pin 4 (CAN -) on the 8-pin connector. Wiggle the harness during the measurement in order to reveal an intermittent condition.
- Continue to test with the pin combinations that are listed in table 4.
Show/hide table
Table 4 Pin on the 8-pin Connector Circuit Name Measure to Pin Number Circuit Name 3 CAN data link + 1 +PWR master 3 CAN data link + 2 -PWR master 3 CAN data link + 5 CAN shield 3 CAN data link + 6 CAN term loop - 3 CAN data link + 7 CAN term loop + 4 CAN data link - 1 +PWR master 4 CAN data link - 2 +PWR master 4 CAN data link - 5 -PWR master 4 CAN data link - 6 CAN term loop - 4 CAN data link - 7 CAN term loop +
Expected Result:
The resistance is greater than 20000 Ohms.
Results:
- OK - The resistance is greater than 20000 Ohms.
Repair: Temporarily replace the control station that is suspect.
After the repair, verify that the diagnostic code is NOT active.
STOP
- NOT OK - The resistance IS NOT greater than 20000 Ohms.
Repair: Repair the cable or replace the cable.
STOP