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1A-101 Engine General Information and Diagnosis:
Wiring Diagram
DTC Detecting Condition and Possible Cause
DTC detecting condition
• Low voltage at terminal "C41-30" when cranking engine.
or
• High voltage at terminal "C41-30" after starting engine.
*2 driving cycle detection logic, continuous monitoring
DTC Confirmation Procedure
1) Turn ignition switch OFF.
2) Clear DTC with ignition switch ON, crank engine and run it at idle for 3 min.
3) Check pending DTC and DTC.
DTC Troubleshooting
Step
1
Was "Engine and Emission Control System Check"
performed?
2
Terminal voltage check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Remove ECM from vehicle body and then connect
connectors to ECM.
3) Check for voltage at terminal "C41-30" of ECM
connector connected, under the following condition.
Terminal voltage
While engine cranking: 6 – 10 V
After starting engine: 0 V
Is voltage as specified?
ECM
C41-30
BLK/YEL
C41 (31P)
9
8
7
6
5
4
3
2
1
21
20
19
18
17
16
15
14
13
12
11
10
31
30
29
28 27
26
25
24
23
22
1. Ignition switch
2. Transmission range switch (A/T)
3. Starter motor
Action
2
3
G04 (24P)
G03 (17P)
7
6
5
4
3
2
1
6
5
12
11
16
15
14
13 12
11
10
9
8
24
23
22
21
20
19
18
17
17
16
• "BLK/YEL" circuit open
• ECM malfunction
Yes
Go to Step 2.
Poor "C41-30"
connection or
intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection in Section
00".
If wire and connections
are OK, substitute a
known-good ECM and
recheck.
1
4
3
2
1
10
9
8
7
15
14
13
Possible cause
No
Go to "Engine and
Emission Control
System Check".
"BLK/YEL" circuit open.
I2RH0B110068-01
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