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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
WIRING DIAGRAM:
B72
1
2
1
2
3
4 5 6
3
4
5
6
7
8
Step
1
CHECK HARNESS BETWEEN IGNITION
SWITCH AND ECM.
1) Disconnect the connector from ECM.
2) Measure the voltage between ECM and
chassis ground.
Connector & terminal
(B135) No. 32 (+) — Chassis ground (
IGNITION
B72
SWITCH
3
2
STARTER
RELAY
B225
ECM
B:
B135
D:
B137
B225
9
13
17
21
10
14
18
22
11 12
15 16
19 20
23 24
25
29
33
37
26
30
34
38
27 28
31 32
35 36
39 40
−
):
EN(H6DO)(diag)-210
SBF-6
MAIN SBF
STARTER MOTOR
M
B14
B135
B:
1
2
3
4
5
6
7
8 9
10 11 12
13 14 15 16 17
18
19
20 21
22 23
24 25
26
27
28
29 30 31
32 33
34 35
Check
Is the voltage more than 10 V? Repair the battery
BATTERY
E
1
LHD: 15
*
RHD: 16
2
LHD: 16
*
RHD: 15
3
LHD: 13
*
RHD: 14
4
LHD: 14
*
RHD: 13
B137
D:
1
2
3
4
5
6
7
8 9
10 11 12
13 14 15 16 17
18
19 20 21
22 23
24 25
26
27
28
29
30 31
Yes
Repair the poor
short circuit of har-
contact in ECM.
ness between igni-
tion switch and
ECM.
EN-03489
No
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