CS35 2013.04
3.1.13-167 3.1.13-167Electronic Control System - ME7
DTC P0201, P0261, P0262
1. DTC Description
2. Possible Sources
3. Diagnosis Procedures
Fault Code Description Definition
P0201
Cylinder 1 fuel injector control
circuit open circuit
Injector operating voltage is controlled by the main
relay that controlled by the ECM, battery voltage
through terminal 45 of the fuse EF23 in the engine
compartment electric center C10 is transported to
terminal 1 of all injector wiring harness connector.
ECM controls the internal grounding of injector 1
through terminal 27 on wiring harness connector
E01. ECM monitors the working state of all the injec-
tors driver circuit. If the ECM detects driving voltage
not corresponding to the correct voltage, it will set up
a fuel injector control circuit fault diagnosis DTC.
P0261
Cylinder 1 fuel injector control
circuit short circuit to ground
P0262
Cylinder 1 fuel injector control
circuit short circuit to power sup-
ply
Fault
Code
Test Tactics
Setting Conditions (Control
Strategy)
Fault
P0201
Hardware or Circuit
Inspection
• Open circuit
• Short circuit to ground
• Short circuit to power supply
• Injector circuit fault
• Fuel injector fault
• ECM fault
P0261
P0262
Test Conditions Details/Results/Actions
1. General inspection
A. Inspect fuel injector wiring harness connector for
damage, poor contact, aging and loose.
Is it normal?
Y
Go to step 2.
N
Repair the fault.
2. Inspect the fuel injector mouth
A. Disconnect the fuel injector wiring harness
connector E14.
B. Measure the resistance value between the two
terminals of the fuel injector.
Standard Resistance Value: 20 ℃ (68 ºF)11.4 ~
12.6 Ω
Is the resistance value normal?
Y
Go to step 3.
N
Replace the fuel injector.
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