installed replacement EGS controller. scan before clearing codes
GS8602 --- 0x000001 EGS: Pressure actuator EDS 1 --- Unknown
GS8602 --- 0x000004 EGS: Pressure actuator EDS 4 --- Unknown
GS8602 --- 0x000011 EGS: Solenoid valve 2 --- Unknown
GS8602 --- 0x000012 EGS: Solenoid valve 3 --- Unknown
GS8602 --- 0x000030 EGS: Converter lockup clutch, excessive slip --- Unknown
IKI --- 0x00008D IKE: EGS signal line disturbed --- Unknown
after clear codes
no change.
use ista/p to reprogram egs.
The fault memory must be deleted again for fault handling.
Delete the fault memory again?
DME/DDE
- 0xDC (220)
DME: CAN timeout, electronic transmission management (EGS/AGS)
DSC
- 0x3A (58)
DSC: No message from EGS control unit
EGS
- 0x4 (4)
EGS: Pressure actuator EDS 4
- 0x1 (1)
EGS: Pressure actuator EDS 1
- 0x12 (18)
EGS: Solenoid valve 3
- 0x11 (17)
EGS: Solenoid valve 2
- 0x10 (16)
EGS: Solenoid valve 1
KOMBI
- 0xFB (251)
IKE: No CAN identification (EGS)
- 0x8D (141)
IKE: EGS signal line disturbed
AND cleared again... successfull !
Finished programming.
Test and re-scan
GS8602 --- 0x000001 EGS: Pressure actuator EDS 1 --- Unknown
GS8602 --- 0x000004 EGS: Pressure actuator EDS 4 --- Unknown
GS8602 --- 0x000010 EGS: Solenoid valve 1 --- Unknown
GS8602 --- 0x000011 EGS: Solenoid valve 2 --- Unknown
GS8602 --- 0x000012 EGS: Solenoid valve 3 --- Unknown
IKI --- 0x00008D IKE: EGS signal line disturbed --- Unknown
Not sure what's going on now. Any thoughts ?
I have no voltage output on pin 21 from the EGS.
I took out the case from the replacement EGS module, and there was no damage like the previous part installed. It's almost like the transistor to output on pin 21 has a signal to turn off.
I rechecked the resistances from the EGS harness from pin 21 to 38,28,26,16,7 and had 29 ohms on the MV's and 7 ohms on the EDS's.
checked the other other three EDS' powered from pin 11, good. tested the temp sensor, and both speed sensors none were shorted either.
And then I tested the main power connector the the EGS and pin 1,3 were B+ voltage
4,5,6 ground
7,8,9 B+
Anyone seen RRPhil ? The transmission guy. He shut down private messages and I can't get in contact . I looked at this bimmerforums thread but the OP said he changed the transmission controller and the problem got fixed.
https://www.bimmerforums.com/forum/s...fail-safe-mode
UPdate; found a clear pin-out chart from
https://www.newtis.info/tisv2/a/en/e...ontrol/Z4AE08C
Which I will be using to continue the work next weekend.
attachments;
diagram of solenoids.
serial of egs module
inspection of replacement egs.
printed resistance checks