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ASCD STEERING SWITCH CHECK
=NAEL0375S05
1 CHECK ASCD STEERING SWITCH CIRCUIT FOR ASCD CONTROL UNIT
Check voltage between ASCD control unit harness connector terminals and ground.
SEL260WC
Refer to wiring diagram in EL-253.
OK or NG
OK © ASCD steering switch is OK.
NG © GO TO 2.
2 CHECK POWER SUPPLY FOR ASCD STEERING SWITCH
Does horn work?
Yes © GO TO 3.
No © Check the following.
I 7.5A fuse (No. 52, located in the relay box)
I Horn relay
I Horn circuit
3 CHECK ASCD STEERING SWITCH
1. Disconnect ASCD steering switch.
2. Check continuity between ASCD steering switch harness connector Z30 terminals by pushing each switch.
SEL495Y
OK or NG
OK © Check harness for open or short between ASCD steering switch and ASCD control unit.
NG © Replace ASCD steering switch.
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-261
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