Engine General Information and Diagnosis: 1A-68
DTC “C29” (P1654-H/L): Secondary Throttle Position Sensor (STPS) Circuit Malfunction
B822H11104019
Detected Condition and Possible Cause
Wiring Diagram
ECM coupler (Harness side)
Troubleshooting
CAUTION
!
When using the multi-circuit tester, do not strongly touch the terminal of the ECM coupler with a
needle pointed tester probe to prevent terminal damage.
NOTE
After repairing the trouble, clear the DTC using SDS tool. Refer to “Use of SDS Diagnosis Reset
Procedures (Page 1A-14)”.
Detected Condition
Possible Cause
C29
Output voltage is not within the following
range.
Difference between actual throttle opening
and opening calculated by ECM is larger
than specified value.
0.15 V
≤
Sensor voltage < 4.85 V
• STP sensor maladjusted.
• STP sensor circuit open or short.
• STP sensor malfunction.
• ECM malfunction.
• STP sensor circuit shorted to VCC or ground circuit
open.
P1654
H
Sensor voltage is higher than specified
value.
L
Sensor voltage is lower than specified
value.
• STP sensor circuit open or shorted to ground or VCC
circuit open.
ECM
E2
VCC
Y/W
R
STPS
STP sensor
B/Br
11
20
29
I822H1110062-01
1
2
3
4 5
6 7 8 9 10 11 12 13 14 15 16 17
18
18
18 19 20 21 22 23
26 27
24 25
28 29 30 31 32 33 34
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
53 54 55 56 57 58 59 60 61 62 63
67
64 65 66
68
68
68
52
52
52
I822H1110010-01
Содержание VLR1800
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