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POWER SUPPLY AND GROUND CIRCUIT CHECK
=NAEL0375S03
1 CHECK POWER SUPPLY CIRCUIT FOR ASCD CONTROL UNIT
1. Disconnect ASCD control unit harness connector.
2. Turn ignition switch ON.
3. Check voltage between ASCD control unit harness connector terminal 5 and ground.
SEL256WB
Refer to wiring diagram in EL-254.
Yes © GO TO 2.
No © Check the following.
I 7.5A fuse [No. 11, located in the fuse block (J/B)]
I Harness for open or short between ASCD control unit and fuse
2 CHECK GROUND CIRCUIT FOR ASCD CONTROL UNIT
Check continuity between ASCD control unit harness connector terminal 17 and body ground.
SEL257WB
Refer to wiring diagram in EL-254.
Yes © Power supply and ground circuit is OK.
No © Repair harness.
GI
MA
EM
LC
EC
FE
CL
MT
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
Trouble Diagnoses (Cont’d)
EL-259
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