Mitsubishi 3000GT Service Manual page 775

5
ECS indicator light does not switch when ECS switch is operated.
Does ECS indicator light flash?
No
Disconnect ECS switch connector and check har-
ness connector with ignition switch at ON.
No. 10 terminal voltage and continuity between
No. 11 terminal and ground up to specification?
Check ECS switch. (Refer to P.33B-18.) C--W Replace ECS switch.
Yes
Removecombination meter and check
Yes
combination meter and ground?
Istroubleclearedbyreplacing combinationmwL* Replace ECS control unit.
Anti-dive control only stops.
Does stop light illuminate when brake
depressed?
No
Disconnectstop light switch connector and check
harness connector.
No. 2 terminal voltage up to specification?
Standard* Battery postwe voltage
Check stop light switch. (Refer to F!33B-19.)
Good?
Yes
Replace ECS control unit.
ECS - Troubleshootina
Yes
code.
1
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 indicator light bulb.
I
Check by entering simulated vehicle speed from scan tool to simulate anti-dive
control. (Refer to P.33B-15.) Good?
Good
Is continuity provided between No. 3 terminal of stop light switch and No. 58 terminal
of ECS control unit?
1
Replace ECS control unit.
(Between No. 2 terminal of stop light switch and battery)
Replace stop light switch.
I i - - -
T S B
Revision *
I
Replace EC; control unit
Yes No
Correct harness.
I