11129411 Volvo.Penta Anchorage

Illustration 1 g01071121
Schematic for the 8 volt supply
Test Step 1. Inspect the Electrical Connectors and Wiring
Illustration 2 g01071133
Terminal box
(1) J2/P2 connectors for the ECM
(2) J1/P1 connectors for the ECM
(3) J12/P12 connectors for the harness from the sensors
(4) J11/P11 connectors for the harness from the detonation sensors
(5) 16 amp circuit breaker
Set the engine control to the OFF/RESET mode. Switch 16 amp circuit breaker (5) to the OFF position. Note: For the following steps, refer to Troubleshooting, "Inspecting Electrical Connectors".
Thoroughly inspect each of the following connectors:
J1/P1 and J2/P2 connectors
J11/P11 and J12/P12 connectors on the terminal box
Check the torque of the allen head screw for the ECM connector. The proper torque is 6 1 N m (55 9 lb in).
Illustration 3 g01071138
Harness side of the P1 connector
(P1-4) 8 volt supply
(P1-5) Return
Illustration 4 g01071141
Harness side of the P2 connector
(P2-54) Return
(P2-55) Return
(P2-56) 8 volt supply
(P2-57) 8 volt supply
Illustration 5 g00888905
Harness side of the P11 connector
(P11-A) Return
(P11-E) Return
(P11-F) 8 volt supply
(P11-J) 8 volt supply
Illustration 6 g01076901
Harness side of the P12 connector
(P12-L) 8 volt supply
(P12-N) Return
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the circuit for the 8 volt supply.
Illustration 7 g01071162
Left side view
(6) Sensor for engine coolant pressure (outlet)
(7) Detonation sensor
(8) Sensor for inlet air pressure
Illustration 8 g01071169
Left side views of a 50 Hz engine and a 60 Hz engine
(9) Sensor for atmospheric pressure (if equipped)
Check the harness and wiring for abrasion and for pinch points from each 8 volt sensor to the ECM. Expected Result:All of the connectors, pins, and sockets are connected properly. The connectors and the wiring do not have corrosion, abrasion, or pinch points.Results:
OK - All of the connectors, pins, and sockets are connected properly. The connectors and the wiring do not have corrosion, abrasion, or pinch points. The components are in good condition with proper connections. Proceed to Test Step 2.
Not OK - At least one of the connectors, pins, and sockets are not connected properly. At least one of the connectors and/or the wiring has corrosion, abrasion, and/or pinch points.Repair: Perform the necessary repairs and/or replace parts, if necessary.STOPTest Step 2. Check for Diagnostic Codes
Connect Cat ET to the service tool connector on the terminal box.
Switch the 16 amp circuit breaker ON. Set the engine control to the STOP mode.
Observe the "Active Diagnostic" screen on Cat ET. Wait at least 30 seconds so that any codes may become activated. Look for these codes:
41-03 8 Volt DC Supply short to +batt
41-04 8 Volt DC Supply short to ground
Observe the "Logged Diagnostic" screen on Cat ET. Look for the same codes. Expected Result:The 41-03 code or the 41-04 code is not active.Results:
No codes - The 41-03 code or the 41-04 code is not active. The +8 volt sensor supply is operating correctly at this time.STOP
Active code - The 41-03 code or the 41-04 code is active. Proceed to Test Step 3.
Logged code - The 41-03 code or the 41-04 code is not active. However, there is at least one logged code for the 8 volt sensor supply.Repair: There may be a problem with the wiring and/or a connector. Refer to Troubleshooting, "Inspecting Electrical Connectors".Verify that the wiring and/or connectors are OK. Check for diagnostic codes again. Proceed to Test Step 3, if necessary.Test Step 3. Disconnect the 8 Volt Sensors and Look for Active Diagnostic Codes
Turn on the "Active Diagnostic" screen on Cat ET. Verify that the "41-03" or "41-04" code is active.
Disconnect each 8 volt sensor one at a time. After you disconnect each sensor, wait for at least 30 seconds and then observe the "Active Diagnostic" screen on Cat ET. Note: An "Open Circuit" code will be generated for each sensor that is disconnected. This is normal. Clear the codes after you complete this procedure.Expected Result:The original "8 Volt DC Supply" diagnostic code is deactivated when a particular sensor is disconnected.Results:
Yes - The original "8 Volt DC Supply" diagnostic code is deactivated when a particular sensor is disconnected. The sen