Volvo TAMD75P Operator's Manual page 75

Code 3.1 Potentiometer
Cause: The control module receives no information from
the potentiometer for the gear selector lever (dual lever
control only).
Consequence: The gear is disengaged and the engine
speed (RPM) is set to 1000 rpm.
NOTE! The fault applies to the relevant control position
(the boat can be driven from another control position if
there are multiple control positions).
Corrective action:
• Check the wiring and connections for the potentiometer
and the wiring and connections leading to the control
position.
• Erase the diagnostic trouble code (DTC).
• Start the engine.
• Emergency shifting is possible if the fault remains: See
the "Troubleshooting" chapter.
Code 3.3 Temperature sender
Cause: The control module receives no signal from the
engine coolant temperature (ECT) sender.
Consequence: The engine is difficult to start, there is ex-
cessive smoke when the engine is cold.
Corrective action:
• Check the sender and the connections and wiring for the
sender and control module.
• Erase the diagnostic trouble code (DTC).
• Start the engine.
• Contact an authorized workshop if the fault persists.
Code 4.6 Starter relay
Cause: Short-circuit or open-circuit in the control voltage
for the starter relay.
Consequence: The engine cannot be started.
Corrective action:
• Check the fuses, connections and wiring for the starter
relay and control module.
• Erase the diagnostic trouble code (DTC).
• Start the engine.
• Contact an authorized workshop if the fault persists.
Code 5.1 Main relay
Cause: Short-circuit or open circuit in the wiring for the
main relay.
Consequence: The engine cannot be started or stopped.
Corrective action:
• Check the main relay and fuses, wiring and connections
for the main relay and the control module.
• Erase the diagnostic trouble code (DTC).
• Start the engine.
• Contact an authorized workshop if the fault persists.
Code 5.4 Forward gear
Cause: Short-circuit or open-circuit in the wiring for re-
verse gear for the forward gear.
Consequence: Shifting is not possible. The gear is disen-
gaged (if possible).
Corrective action:
• Check the wiring and the connections for the reverse
gear.
• Erase the diagnostic trouble code (DTC).
• Start the engine.
• Emergency shifting is possible if the fault remains: See
the "Troubleshooting" chapter.
Code 5.5 Reverse gear
Cause: Short-circuit or open-circuit in the wiring for re-
verse gear for the gear in reverse.
Consequence: Shifting is not possible. The gear is disen-
gaged (if possible).
Corrective action:
• Check the wiring and the connections for the reverse
gear.
• Erase the diagnostic trouble code (DTC).
• Start the engine.
• Emergency shifting is possible if the fault remains: See
the "Troubleshooting" chapter.
Diagnostic function
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