by Intruder on Wed Jun 26, 2019 5:41 pm
From the workshop manual, which can be downloaded at the link contained in the forum "directory"at the top of the page by the way.
U1120:
Failure information of Engine-ECU
DIAGNOSIS CODE SET CONDITIONS
A/T-ECU receives the signal from the engine-ECU via the CAN bus line. When the received signal contains failure information, the diagnosis code No. U1120 is stored.
PROBABLE CAUSES
•Damaged wiring harness or connector
•Malfunction of the engine-ECU
•Malfunction of the A/T-ECU
U1190:
Can’t receive fault detection control signal
DIAGNOSIS CODE SET CONDITIONS
To each ECU connected to the CAN bus line, ETACS-ECU sends the diagnosis code (U code) detection permission or prohibition signal. When A/T-ECU cannot receive the diagnosis code (U code) detection permission or prohibition signal for 5 seconds, diagnosis code No. U1190 is stored.
PROBABLE CAUSES
•Malfunction of the ETACS-ECU
•Malfunction of the CAN bus
P3538:
This code is not referenced at all in the workshop manual so can't help with that one.
Everything in the manual points to diagnosis by a dealer using a MUTT-3 tool.
Good luck.
Yes... I'll have another beer.