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6-110 ENGINE GENERAL INFORMATION AND DIAGNOSIS
DTC P1500 ENGINE STARTER SIGNAL CIRCUIT MALFUNCTION
CIRCUIT DESCRIPTION
1. Ignition switch
[A] : Case of TYPE A is shown (See NOTE)
NOTE:
For TYPE A and TYPE B, refer to NOTE in "ECM VOLTAGE VALUES TABLE" for applicable model.
DTC DETECTING CONDITION
• Low voltage at terminal C41-7 (Case of TYPE A. See
NOTE) or C41-20 (Case of TYPE B. See NOTE) when
cranking engine or
• High voltage at terminal C41-7 (Case of TYPE A. See
NOTE) or C41-20 (Case of TYPE B. See NOTE) 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 in "ON BOARD TEST" or "PENDING DTC" mode and DTC in "DTC" mode.
INSPECTION
Step
1
Was "ENGINE DIAG. FLOW TABLE" performed? Go to Step 2.
2
Check Terminal Voltage.
1) Check for voltage at terminal C41-7 (Case of
TYPE A. See NOTE) or C41-20 (Case of
TYPE B. See NOTE) of ECM connector con-
nected, under following condition.
While engine cranking : 6 – 10 V
After starting engine : 0 V
Is voltage as specified?
ECM
C41-7 [A]
BLK/YEL
C41-20 [B]
C42 (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
2. Transmission range switch (A/T)
[B] : Case of TYPE B is shown (See NOTE)
Action
2
3
C41 (24P)
G02 (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
3. Starter motor
• "BLK/YEL" circuit open
• ECM malfunction
Yes
Poor C41-7 (Case of TYPE A. See
NOTE) or C41-20 (Case of TYPE B.
See NOTE)
connection or intermittent trouble.
Check for intermittent referring to
"Intermittent and Poor Connection"
in Section 0A.
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
Go to "ENGINE DIAG.
FLOW TABLE".
"BLK/YEL" circuit open.
No
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