Mitsubishi 3000GT Service Manual page 873

SERVICE BRAKES
E-7 When diagnostic trouble code "52 MOTOR RELAY" is displayed
The ABS ECU outputs this diagnostic trouble code
for the motor relay and motor in the following cases.
When the motor relay does not function
l
When there is trouble with the motor itself and
l
it does not revolve
M
10
10
---------
2
Does the motor make a noise
during scan tool forced drive
mode?
Remove the motor relay.
Remove the motor relav and
check resistance values.'
No. 85-No. 86: Resistance
value 72-88 SLZ
No. 30-No. 87: No continuity
Battery voltage is applied be-
tween terminals No. 85 and
No. 86.
2
No. 38-No. 87: Continuity
Is pump motor ground con-
connector terminal 11
ground indicate battery posi-
tive voltaae?
Is resistance between HU con- No
No. 10 72-88 Q?
Is resistance between body
connector terminal No. 2 and
No. 26 72-88 !2?
connector terminal No. 5 and
around 0.1-0.3 Q?
ABS ECU malfunction
TSB Revision
When the motor ground is disconnected and
l
the motor does not revolve
When the motor continues to revolve
l
[Hint]
If there is motor operation noise durino scan tool
forced drive mode; there is a broken or short cir-
cuited motor monitor wire.
No
Yes
and
Yes
Yes
Replace motor relay.
Connect ground wire.
Broken wire in pump motor
power circuit
Repair harness.
Repair harneis.
Replace ABS ECU.