banshee365
Veteran Member
Hey all. I'm looking at an issue I havn't heard much about on an '06 BRM. I noticed the idle running right at 1,000 rpm when stopped. I thought it was a bit high. Turning AC on or off and varying electrical load doesn't effect it. Coolant temp sensors are reading normal. The only code I'm looking at the could maybe cause this is:
01598 - Drive Battery Voltage
000 - -
Freeze Frame:
Fault Status: 01100000
Fault Priority: 2
Fault Frequency: 157
Reset counter: 17
Mileage: 178022 km
Time Indication: 0
Freeze Frame:
ON
Voltage: 13.35 V
ON
ON
OFF
OFF
ON
The fault frequency is high so that seems to be the reason it idles high a lot. I also started the car this morning, when cold. The idle was normal at first then about 10 seconds after start kicked up to 1,000 rpm and the fans came on. The fans seem to be hooked to the high idle (maybe to ensure cooling when stopped with a higher idle?) regardless of AC status. The alternator showed to be charging around 13.5 volts or so at idle when it was idling high when cold.
It seems obvious to me the alternator is marginal (111k miles) and possibly causing the high idle, but I havn't seen a vehicle handle a low charging voltage in this way.
01598 - Drive Battery Voltage
000 - -
Freeze Frame:
Fault Status: 01100000
Fault Priority: 2
Fault Frequency: 157
Reset counter: 17
Mileage: 178022 km
Time Indication: 0
Freeze Frame:
ON
Voltage: 13.35 V
ON
ON
OFF
OFF
ON
The fault frequency is high so that seems to be the reason it idles high a lot. I also started the car this morning, when cold. The idle was normal at first then about 10 seconds after start kicked up to 1,000 rpm and the fans came on. The fans seem to be hooked to the high idle (maybe to ensure cooling when stopped with a higher idle?) regardless of AC status. The alternator showed to be charging around 13.5 volts or so at idle when it was idling high when cold.
It seems obvious to me the alternator is marginal (111k miles) and possibly causing the high idle, but I havn't seen a vehicle handle a low charging voltage in this way.