Engine General Information and Diagnosis: 1A-101
Check 4
1) Click the button (6) and increase the “Spec” (2) to 1
900 rpm.
2) Check that the “Desired idle speed” (3) is approx. 1
900 rpm.
3) Check that the “Engine speed” (7) is close to 1 900
rpm.
NOTE
Be careful not to increase the “Spec” to 2 000
rpm, or the “Engine speed” may reach the
upper limit.
If the ISC valve does not function properly, inspect the
ISC valve or replace the ISC valve. Refer to “DTC “C40”
(P0505 / P0506 / P0507): ISC Valve Circuit Malfunction
(Page 1A-97)” or “Throttle Body Disassembly and
Assembly in Section 1D (Page 1D-11)”.
DTC “C41” (P0230-H/L): FP Relay Circuit Malfunction
B837H11104025
Detected Condition and Possible Cause
Wiring Diagram
ECM coupler (Harness side)
2
6
I837H1110086-01
3
7
I837H1110087-01
Detected Condition Possible Cause
C41
No voltage is applied to fuel pump. • Fuel pump relay circuit open or short.
• Fuel pump relay malfunction.
P0230
H
Voltage is applied to fuel pump although
fuel pump relay is turned OFF.
• Fuel pump relay switch circuit is shorted to power
source.
• Faulty pump relay (switch side).
L
No voltage is applied to fuel pump
although fuel pump relay is turned ON.
• Fuel pump relay coil circuit open or short.
• Faulty pump relay (coil side).
ECM
Side-stand
relay
Engine stop
switch
Fuel pump
relay
Fuel pump
Ignition
switch
M
Y/R
VM
FP relay
R/BI
O/W
Y/B
To side-stand
switch
24
40
I837H1110088-01
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I837H1110007-02
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