Infiniti I30 (A33). Manual — part 405
POWER SUPPLY AND GROUND CIRCUIT CHECK
=NHEL0232S03
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.
SEL256W
Refer to wiring diagram in EL-282.
Yes
©
GO TO 2.
No
©
Check the following.
I
10A fuse (No. 10 located in the fuse block)
I
Harness for open or short
2
CHECK GROUND CIRCUIT FOR ASCD CONTROL UNIT
Check continuity between ASCD control unit harness connector terminal 17 and body ground.
SEL257W
Refer to wiring diagram in EL-282.
Yes
©
Power supply and ground circuit is OK.
No
©
Repair harness.
GI
MA
EM
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
Trouble Diagnoses (Cont’d)
EL-289
ASCD BRAKE/STOP LAMP SWITCH CHECK
=NHEL0232S06
1
CHECK ASCD BRAKE SWITCH CIRCUIT
With CONSULT-II
See “BRAKE SW” in “DATA MONITOR” mode.
SEL286WA
Without CONSULT-II
1. Disconnect ASCD control unit harness connector.
2. Turn ignition switch ON.
3. Check voltage between ASCD control unit harness connector terminal 8 and ground.
SEL258WC
OK or NG
OK
©
GO TO 2.
NG
©
Check the following.
I
ASCD brake switch
Refer to “Electrical Component Inspection” (EL-298).
I
Park/neutral position switch
Refer to “Electrical Component Inspection” (EL-298).
I
Park/neutral position relay
I
Harness for open or short
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
Trouble Diagnoses (Cont’d)
EL-290
2
CHECK STOP LAMP SWITCH CIRCUIT
With CONSULT-II
See “STOP LAMP” in “DATA MONITOR” mode.
SEL287W
Without CONSULT-II
1. Disconnect ASCD control unit harness connector.
2. Check voltage between ASCD control unit harness connector terminal 23 and ground.
SEL259W
Refer to wiring diagram in EL-281.
OK or NG
OK
©
ASCD brake/stop lamp switch is OK.
NG
©
Check the following.
I
15A fuse [No. 2, located in the fuse block (J/B)]
I
Harness for open or short between ASCD control unit and stop lamp switch
I
Harness for open or short between fuse and stop lamp switch
I
Stop lamp switch
Refer to “Electrical Component Inspection” (EL-298).
GI
MA
EM
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
Trouble Diagnoses (Cont’d)
EL-291
ASCD STEERING SWITCH CHECK
=NHEL0232S07
1
CHECK ASCD STEERING SWITCH CIRCUIT FOR ASCD CONTROL UNIT
With CONSULT-II
See “MAIN SW”, “RESUME/ACC SW”, “SET SW” and “CANCEL SW” in “DATA MONITOR” mode.
SEL288W
Without CONSULT-II
Check voltage between ASCD control unit harness connector M52 terminal 11 (R/L) and ground.
SEL005Y
Refer to wiring diagram in EL-281.
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
10A fuse (No. 10, located in the relay box)
I
Harness for open or short
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
Trouble Diagnoses (Cont’d)
EL-292
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