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Fig. 2 for Step 4 and Step 6
DTC P0505 (DTC NO.26) IDLE CONTROL SYSTEM MALFUNCTION
CIRCUIT DESCRIPTION
C42 (31P)
9
8
7
6
5
21
20
19
18
17
16
31
30
29
28 27
1. Ignition switch
2. Battery
DTC DETECTING CONDITION
• No closed signal to IAC valve is detected after
engine start.
✱2 driving cycle detection logic, continuous monitor-
ing.
DTC CONFIRMATION PROCEDURE
1) Turn ignition switch OFF.
2) Clear DTC with ignition switch ON.
3) Start engine and run it at idle for 1 min.
4) Check DTC and pending DTC.
GRN/RED
4
BLK/RED
BLK
C41 (24P)
4
3
2
1
7
6
5
4
15
14
13
12
11
10
16
15
14
13 12
26
25
24
23
22
24
23
22
21
3. Main relay
4. IAC valve
ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-105
C42-6
C41-5
C41-6
C41-10
BRN/WHT
BLK/RED
G02 (17P)
3
2
1
6
5
4
3
2
1
12
11
10
9
8
7
11
10
9
8
20
19
18
17
17
16
15
14
13
• "BLK/RED", "GRN/RED" or "BLK" circuit open or
short
• IAC valve malfunction
• ECM malfunction
ECM
1
3
2
POSSIBLE CAUSE
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