Mitsubishi 3000GT 1991, Service Manual

Page: 751 / 1146

SERVICE BRAKES
MUT
(MB991
DIAGNOSIS CODE CHART
21
G SNSR. E-3
22 STOP LAMPSW
E-4
CHECK USING SELF DIAGNOSIS FUNCTION
With the ignition switch OFF, connect the MUT through the
adapter harness turn the ignition ON and
select the ABS system. (The ABS warning light lights up, it
goes into the MUT mode.
In the MUT mode, ABS does
not function.)
If it does not go into the MUT mode, check the ECU power
circuit and the harness between the ECU and diagnosis
check terminals.
(2) Read the diagnosis output codes from the ECU memory.
(3) Clear the diagnosis codes once from memory. (Refer to
If the memory cannot be cleared, the ECU is currently
detecting the trouble and the ABS ECU is in fail safe. If it
can be cleared, the trouble is either temporary or appears
only when driving.
(4) When the trouble codes cannot be cleared, or when the
ABS ECU goes into fail safe during another test drive and
trouble codes are output, check according to trouble code
check charts (E-l-E-7).
Reference
41
FR SOL. VALVE
I
E-5
51 VALVE RELAY
52 M O T O R R E L A Y E-7
Reference
TSB
I