Acura 3.5 RL Manual page 359

Troubleshooting
Troubleshooting Procedures
Symptom Chart
Listed below are symptoms and probable causes for problems that DO NOT cause the Malfunction Indicator Lamp (MIL) to
come on. If the MIL was reported on, check the DTC.
Troubleshoot each probable cause in the order listed (from left to right) until the symptom is eliminated.
The probable cause and troubleshooting page reference can be found below.
Engine will not start
Hard starting
Cold fast idle too low
Cold fast idle too high
Idle speed fluctuates
Misfire or rough running
Low power
Engine stalls
Difficult to refuel
Fuel overflows during refueling
Other Probable Causes for an engine that will not start:
— Compression
— PGM-FI main relay
— Engine locked up
— Timing belt
Probable Cause List (For the DTC Chart, see page 11-41)
Probable Cause
1
2
3
(see DTC chart)
(see DTC chart)
4
(see DTC chart)
5
6
7
8
9
(see DTC chart)
10
(see DTC chart)
11
12
(see DTC chart)
13
14
15
16
17
18
(see DTC chart)
19
20 (see DTC chart)
21
22
SYMPTOM
— Starting system
— Ignition system
— Overheating
— Battery
Page
11-66 Powertrain Control Module (PCM)
11-132
Fuel pressure
Crankshaft Position/Camshaft Position (CKP/CMP) (Crankshaft Position/Cylinder Position
(CKP/CYP)) sensor circuit
Intake Air Temperature (IAT) sensor circuit
Idle Air Control (IAC) valve
11-123
Idle Air Control (IAC) thermal valve
11-124 Idle speed adjustment
11-155 Throttle body
11-154
Throttle cable
Manifold Absolute Pressure (MAP) sensor
Throttle Position (TP) sensor
Barometric pressure (BARO) sensor
Section 14 Transmission range switch signal
11-116
Air conditioning signal
Alternator FR Signal
11-118
Brake pedal position switch signal
11-81
11-155 Air cleaner
11-158 Intake Manifold Runner Control (IMRC) system and intake air duct
Three Way Catalytic Converter (TWC)
Evaporative emission (EVAP) control
Contaminated fuel
11-106 Fuel tank vapor control valve
PROBABLE CAUSE
2, 3, 21, 13, 1
2, 10, 12, 20, 21
5, 6, 7, 4
5, 6, 7, 9, 8
5, 14, 15, 6, 7, 9, 8
Troubleshoot for misfire on pages 11-59,
2, 8, 9, 11, 18,17, 19, 10
2, 5, 10, 21, 7, 3, 16
20, 22
20, 22
System
11-60