837015 Volvo.Penta Cable block

Table 1
Diagnostic Codes Table    
CDL Code and Description    Conditions which Generate this Code    System Response    
168-0 Electrical System Voltage : High     The battery supply voltage is greater than 32 VDC for 2 seconds.
The ECM has been powered for 3 seconds.
The engine is not being cranked.     The code is logged.    
168-1 Electrical System Voltage : Low     The battery supply voltage is less than 9 VDC for 2 seconds.
The ECM has been powered for 3 seconds.
The engine is not being cranked.    
168-2 Electrical System Voltage : Erratic, Intermittent, or Incorrect     The engine is running. The battery voltage falls below 9 VDC for one second. The voltage returns above 9 VDC.
or
Three voltage readings in the last 7 seconds were below 9 VDC.    
1834-2 Ignition Keyswitch loss of signal     The ECM detects at least three changes to the state of the signal that is for the keyswitch in the last one second.     The code is logged.    The electrical power supply for the engine ECM and the other engine controllers consists of several components. A low current power distribution panel is used to accommodate the circuit protection for low current devices. Circuit protection for the low current power distribution panel is provided by a central power circuit breaker. This circuit breaker that is located in the high current power distribution panel.This engine utilizes two separate circuits for the electrical power supply. One circuit provides power