TROUBLESHOOTING [ENGINE CONTROL FS]
13
POOR FUEL ECONOMY
DESCRIPTION
Fuel economy unsatisfactory
POSSIBLE
CAUSE
•
Contaminated air cleaner element
•
Improper transmission fluid level
•
Poor fuel quality
•
Improper coolant level
•
Spark plug malfunction
•
Brake dragging
•
Contaminated mass airflow sensor
•
Exhaust system clogged
•
Engine cooling system malfunction
•
Weak spark
•
Erratic or no signal from camshaft position sensor
•
Inadequate fuel pressure
•
PCV valve malfunction
•
Improper valve timing due to timing belt skip out
•
Improper engine compression
Warning
Following troubleshooting flow chart contains fuel system diagnosis and repair procedures. Read
following warnings before performing fuel system service:
• Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep
sparks and flames away from fuel.
• Fuel line spills and leaks are dangerous. Fuel can ignite and cause serious injuries or death
and damage. Fuel can also irritate skin and eyes. To prevent this, always complete “BEFORE
REPAIR PROCEDURE” and “AFTER REPAIR PROCEDURE” described in this manual.
ay 0 1 -1 4 BEFORE REPAIR PROCEDURE
c p
0 1 -1 4 AFTER REPAIR PROCEDURE
STEP
INSPECTION
ACTION
1
Check following:
• Contaminated air cleaner element.
• Transmission fluid level.
• Fuel quality.
• Coolant level.
Are all items okay?
Yes
Go to next step.
No
Service as necessary.
Repeat step
1
.
2
Retrieve and record any continuous memory,
KOEO and KOER DTCs.
Are there any DTCs displayed?
Yes
Go to appropriate DTC test.
No
Go to next step.
3
Connect NGS tester to DLC.
Access ECT PID.
Drive vehicle while monitoring PID.
• ECT PID.
c p
0 1 -4 0
A ENGINE COOLANT
TEMPERATURE SENSOR
INSPECTION [FS]
Is PID within specification?
Yes
Go to next step.
No
Check for coolant leak, cooling fan and condenser fan
operation or thermostat operation.
4
Is strong blue spark visible at each
disconnected high-tension lead while cranking
engine?
Yes
Check follows:
• Spark plug(s) malfunction.
• CMP sensor improperly installed.
• Trigger wheel damage on camshaft.
• Open or short circuit on CMP sensor.
• Open or short circuit between CMP sensor and PCM.
Repair or replace malfunctioning part.
If okay, go to next step.
No
Check follows:
• High-tension leads.
• Ignition coil and connector.
01-01A -1 50
Содержание MX-6 1998
Страница 1: ......
Страница 501: ...STARTING SYSTEM 3 If not as specified replace the starter interlock switch 01 19 3...
Страница 803: ...MANUAL TRANSAXLE W 6 U 5 1 5 W A C 05 15 7...
Страница 934: ...CONTROL SYSTEM CONTROL SYSTEM STRUCTURAL VIEW W6U740WA0 07 40 2...
Страница 983: ...SERVICE TOOLS 08 60 SERVICE TOOLS 08 RESTRAINTS S S T 08 60 1 08 RESTRAINTS SST 08 60 1...
Страница 1005: ...TROUBLESHOOTING POWER DOOR LOCK SYSTEM From previous page Go to next page W 6 U 9 0 1 W H 3 09 01E 7...
Страница 1168: ...SEATS 4A 4 If not as specified replace the power seat switch 2A 2B t 4B 3A 1C 1A 1F W6U913WA9 09 13 7...