Mitsubishi 1992 3000GT, Service Manual

Page: 775 / 1308

ECS Troubleshootina
5
ECS indicator light does not switch when ECS switch is operated.
Yes
Does ECS indicator light flash?
Read diagnostic trouble code and check area associated with diagnostic trouble
No
code.
Disconnect ECS switch connector and check har-
1
ness connector with ignition switch at ON.
No. 10 terminal voltage and continuity between
No. 11 terminal and ground up to specification?
Is continuity provided between No. 10 terminal of ECS switch and No. 1 terminal
of ECS control unit and between No. 11 terminal of ECS switch and ground?
Replace ECS control unit. Correct harness.
Check ECS switch. (Refer to Replace ECS switch.
Yes
Removecombination meter and check
light for burnt filament. Good?
Replace ECS indicator light bulb.
I
No. 11 and 3 terminals
Yes
Is continuity provided between No. 2 terminal of
combination meter and ground?
Correct harness.
Yes
Istroubleclearedbyreplacing Replace ECS control unit.
End
I
Anti-dive control only
I
Check by entering simulated vehicle speed from scan tool to simulate anti-dive
control. (Refer to
Good?
Does stop light illuminate when brake
depressed?
Good Replace control unit
Is continuity provided between No. 3 terminal of stop light switch and No. 58 terminal
of ECS control unit?
No
Disconnectstop light switch connector and check
1
harness connector.
Yes
Replace ECS control unit.
No
Correct harness.
No. 2 terminal voltage up to specification? Correct harness.
Standard* Battery voltage
(Between No. 2 terminal of stop light switch and battery)
Check stop light switch. (Refer to
Good?
I i - - -
Replace stop light switch.
Yes
Replace ECS control unit.
T S B
R e v i s i o n