Hyundai HX145LCR Manual page 390

12. WHEN ENGINE DOES NOT START ( 12. WHEN ENGINE DOES NOT START
·Before disconnecting the connector, always turn the starting switch OFF.
·Before carrying out below procedure, check all the related connectors are properly inserted and
short of fuse No. 2, 3, 11, 15, 19.
·After checking, insert the disconnected connectors again immediately unless otherwise specified.
YES
Check operation
Check voltage
start motor
YES between starter
magnet coil and
Starting switch : START
chassis
Starting switch : START
Spec : 20~30V
Check operation
of start relay
NO
CR-23
Starting switch : START
Check operation
of anti-restart
NO
relay CR-5
Starting switch : ON
lights up condition)
Cause Remedy
YES
Defective ECM or Replace
Check voltage
battery
CN-93-J1 (69)
and chassis
Disconnection in Repair or replace
NO
wiring harness or
Key switch : ON
poor contact
Spec : 20~30V
between CR-35
(86) -CN-93-J1 (69)
YES
Defective magnet Replace
of start motor
Defective start relay Replace
NO
YES
ⓐ
Check voltage
YES
between CN-2
(16) and chassis Disconnection in Repair or replace
NO
wiring harness or
Starting switch : START poor contact
Spec : 20~30V
between CN-2
(16) -CR-5 (87)
YES
Defective anti- Replace
Check voltage
restart relay
between CR-5
NO
(85, 86)
ⓑ
NO
Starting switch : START
Spec : 20~30V
YES
Check voltage Defective start relay Replace
ⓐ
between CR-23
Disconnection in Repair or replace
and chassis
NO
wiring harness or
Starting switch : START
poor contact
Spec : 20~30V
between CN-2 (16)
-CR-5 (87)
YES
Disconnection in
Repair or replace
wiring harness or
Check voltage
poor contact
ⓑ
between CR-5
between CN-51
(87) and chassis
(20)-CR-5 (30)
Disconnection in Repair or replace
Starting switch : START
NO
Spec : 20~30V
wiring harness or
poor contact
between CS-2A
(6)- CR-5 (86)
MASTER SW
CN-36-1
NO.2
7
NO.3
8
NO.11
NO.19
CN93-J1
KEY IG 69
ECM
CN-51
ANTI-RESTART RY 20
MCU
NO.15
CR-5
CN-36-3
30
85 87 87a
86
87
85
86 30
87a
ANTI-RESTART RY
6-35
CS-2A
CN-5
35
40
39
36
START KEY SW
CN-231 CS-74A
2 1
1 2
90A
CN-95
2
1
2
1
BATTERY
CN-60
60A
CIRCUIT BREAKER
CR-1
BATT RY
CN-2
9
CR-23
1
16
2
17 1
5
START RY
1
2
3 4
4 1
2
3
5
6
5
6
CR-35
30
87a 87 85
86
87
85
30 86
87a
POWER RY
MASTER SW
START MOTOR
M
M
B+
CN-45
145LCR6ES13