P1603 Battery Backup Line Malfunction
The PCM is checks the open circuit of battery backup line.
NOTE: When the system detects an open circuit in the battery backup line, it makes 1 failure judgment of other diagnostic trouble codes (DTCs).
DTC SET CONDITIONS
Check Conditions
Starting sequence was completed.
Battery positive voltage is higher than 10 volts.
Judgement Criteria
Battery backup line voltage has continued to be 6 volts or lower for 2 seconds.
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are: )
- Open or shorted battery backup line, or loose connector.
- PCM failed.
The PCM is checks the open circuit of battery backup line.
NOTE: When the system detects an open circuit in the battery backup line, it makes 1 failure judgment of other diagnostic trouble codes (DTCs).
DTC SET CONDITIONS
Check Conditions
Starting sequence was completed.
Battery positive voltage is higher than 10 volts.
Judgement Criteria
Battery backup line voltage has continued to be 6 volts or lower for 2 seconds.
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are: )
- Open or shorted battery backup line, or loose connector.
- PCM failed.