CS35 2013.04
3.1.13-23 3.1.13-23Electronic Control System - ME7
Normal start but idle too high
• Water temperature sensor
• Throttle body
• Vacuum tube
• Ignition timing
• Control module circuit
Refer to: Normal Start, Idle Too
High Diagnosis (3.1.13 Elec-
tronic Control System - ME7,
Symptom Diagnosis and
Testing).
Speed does not increase or
flameout at acceleration
Acceleration problem
Acceleration slow reaction
Acceleration weak, poor perfor-
mance
• Air Intake system
• Inlet air pressure sensor
• Throttle body
• Fuel Injector
•Spark plug
• Ignition timing
• Fuel
• Exhaust block
• Control module circuit
Refer to: Acceleration Fault
Diagnosis (3.1.13 Electronic
Control System - ME7,
Symptom Diagnosis and
Testing).
A/C control not accurate
• A/C switch
• Refrigerant pressure switch
• A/C relay
• Solenoid clutch
•ECM
Refer to: Insufficient Cooling
Diagnosis (4.1.1 Heating, Venti-
lation and Air Conditioning,
Symptom Diagnosis and
Testing).
Unstable engine operation
• Oxygen sensor
• Fuel Injector
•Spark plug
• Ignition timing
• Fuel pressure
• Loose retaining bolts or dam-
aged engine mounting com-
ponents
• Control module circuit
Refer to: Unstable Engine Oper-
ation Diagnosis (3.1.13 Elec-
tronic Control System - ME7,
Symptom Diagnosis and
Testing).
Easy flameout at start
• Crankshaft position sensor
• Fuel Injector
•Spark plug
• Ignition timing
• Fuel pressure
• A/C compressor
• Control module circuit
Refer to: Easy Flameout at
Start Diagnosis (3.1.13 Engine
Electrical control System -
ME7, Symptom Diagnosis and
Testing).
Symptom Possible Sources Action
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