code 92 not relay? relink bcm perhaps?

[slowandlow]

hi folks. i have a persistant code 92 on my v6 vt i wouldnt mind loosing. ive put in a new from holden relay, the white one, and reset the code and it keeps coming up. the fans seem to work when reset till the code comes up again. anyone think the bcm need relinking by holden to the pcm again? maybee cleaning the bcm connections (can anyone tell me where it is. im looking around the fuses under the steering wheel, and cant find it)
all the other threads only seem to relate to the relay, so if anyone has any ideas on this ide love to hear from u. cheers

[slowandlow]

anyone?
trust my car to be more than a simple relay

[slowandlow]

anyone?
Trust my car to be more than a simple relay

[ashbox]

how are you clearing the code?

[slowandlow]

have tried both tech santool, and battery disconnect. both times the code is back within a few minutes

[BlackVXGTS]

CIRCUIT DESCRIPTION:
The PCM determines operation of the two speed engine cooling fan based on A/C request signal input, engine coolant temperature and vehicle speed.
The engine cooling fan low speed relay (labelled LO FAN in relay housing) is energised by the BCM.
When the PCM determines that the engine cooling fan low speed relay should be turned "ON", the PCM will send a message on circuit 1221 to the BCM.
This message will ask the BCM to earth circuit 473 and energise the engine cooling fan low speed relay.
After the BCM provides the earth for circuit 473, the BCM will send a message back to the PCM saying that the earth circuit was commanded.

DTC 92 WILL SET IF:
• Engine is idling.
• PCM supplies a signal to the BCM.
• No response back from BCM to PCM.

DIAGNOSTIC AIDS:
• Dirty, Damaged, or Loose Connections or Damaged harness - Check for any damage to the harness which could cause an intermittent open or short to earth or backed out terminals at the BCM module connectors,
broken locks, improperly formed or damaged terminals.
• The engine will not start if circuit 1221 is open or earthed, therefore if DTC 92 is set and the engine will start, DTC 92 is intermittent. Review DTC history data to determine when DTC 92 set.

Looks like the BCM is located below and to the right of the fuses under the steering column.

[slowandlow]

thanks blackvxGTS. did that come from a workshop manual? i have the same info in my ellerys manual, but i cant understand what they say really, and its not as descriptive. looks like its just go over all the connections wiring, and check the circut from the pcm to the bcm. maybee my bcm is toast. i reckon i might take it to holden to diagnose at least for me anyway.
i'll go out for a look over it again now

[slowandlow]

its quite strange also. both fans still seem to turn on and off as they normally would. one other weird one, is sometimes when the fans where on when i turn off, when i start cold next day (or even after an hour or 2), they are on instantly again. if i turn the car off, then on again. they stay off that time.