Restricted Performance Mode

[bikealarmblair]

gents I'm in need of some help (Again!) I have a customers HSV Maloo in that keeps going into restricted performance mode, when it does this if you clear the DTC from the flash scan it runs fine again for a short while, It constantly shows an immobiliser DTC (its posted at the bottom of this thread) the car to the best of knowledge has had a replacement PCM, Throttle body & throttle pedal before being brought to us. I've also done some logging just incase anybody can spot the problem........

thanks in advance

Blair (UK)

VIN 6G1ZX14U95L418421
Engine 6.0L Gen-IV
Transmission 6 Speed Manual
PCM flash 1MB
Operating System 12596734
Calibration 12597883
OS ID AA
Cal ID
BCC YLDJ
OS Level
Cal Level
Cal file name 12596734.calz
Cal file version 7.33
Cal file date 28th February, 2012
Operating System 12596734 $7A3BE7CC
Engine Operation 92180302 $BAE6BE69
Engine Diagnostics 92180314 $5BF15570
Fuel System 92180320 $9271557B
System 92180326 $401CCA67
Speedometer 92180332 $E453DD9A


DTC DESCRIPTION STATUS MODULE
P1677 "ECM Immobilizer Function Deactivated" PHC ($11) "Engine Control Module (ECM)"

maloo.tun

[gmh308]

Has VATS been re-linked to see if that will clear it?

[bikealarmblair]

not to my knowledge but my main priority is to find out why the car keeps going into restricted performance mode

[gmh308]

Thats the point bro. You are getting an immobilser issue, potentially related to VATS. Any specific work preceeded the immobiliser issue?

[JezzaB]

The replacement ECM (E40), was it flashed by HSV TIS? Or did you just get a blank one and then just flash in a full OS out of a stock HSV?

A new and blank ECM must actually be flashed by HSV if used in a HSV or there can be strange and mysterious throttle problems and ECU internal fault errors plus the ESS (Enhanced Security System) problems.

Plus that VIN does not match a VZ Maloo. It Matches a 2005 Holden VZ Monaro/GTO Coupe

[bikealarmblair]

Thats the point bro. You are getting an immobilser issue, potentially related to VATS. Any specific work preceeded the immobiliser issue?

Aha yeah new PCM!

[bikealarmblair]

The replacement ECM (E40), was it flashed by HSV TIS? Or did you just get a blank one and then just flash in a full OS out of a stock HSV?

A new and blank ECM must actually be flashed by HSV if used in a HSV or there can be strange and mysterious throttle problems and ECU internal fault errors plus the ESS (Enhanced Security System) problems.

Plus that VIN does not match a VZ Maloo. It Matches a 2005 Holden VZ Monaro/GTO Coupe

I didn't fit the new PCM all I have done is scan it, HSV doesn't exist in the UK so I doubt it was flashed by a HSB TIS and the dealer who worked on it prior to us have HP Tuners.

[bikealarmblair]

Any inspiration guys? Seems this has been going on for the best part of two years! Obviously the customer is at his wits end and I'd like to be the hero :p

I've stumble across a bit of background which may help someone

Blair

http://www.pistonheads.com/gassing/t...lems!!!!&mid=0

[gmh308]

Might help if you post the tune. Especially if an alternate tuning package has been used .

[bikealarmblair]

Might help if you post the tune. Especially if an alternate tuning package has been used .

It's in the first post