Troubleshooting Chart - Mazda B-Series 1997 Workshop Manual

TROUBLESHOOTING GUIDE
Troubleshooting chart
HARD STARTILONG CRANKIERRATIC STARTIERRATIC CRANK
I
- -
Are any diagnostic trouble codes displayed
during Key On Engine Off, Key On
Engine Running or Continuous Memory inspection?
page FT-77
DESCRIPTION
Yes
Starter cranks engine at normal speed but engine requires excessive cranking time
before start
Battery in normal condition
Diagnostic trouble code displayed
Check for cause (Refer to Diagnostic Trouble Code
chart) page FT-77
No diagnostic trouble codes displayed
Go to next step
-
Is a strong blue spark visible at each disconnected Yes Go to next step
high-tension lead while cranking engine?
-NO Check camshaft position sensor s~gnai at PCM
INSPECTION
page FT-165
If OK, check as follows:
Crankshaft pos~tion sensor
@
page FT-162
High-tension leads Section G
Spark plugs
If not OK, check wiring harness
s Go to next step
ACTION
DESCRIPTION:
Further describes the system.
Confirm that the chart addresses the actual symptom before beginning troubleshooting.
4BUOF3-014
STEP:
This shows the order of troubleshooting. Proceed with troubleshooting as indicated.
4BUOF3-015
INSPECTION:
This describes an inspection to quickly determine the malfunction of parts. If a detailed procedure is
necessary to perform the INSPECTION, refer to the page specified by the
"m"
mark.
4BUOF3-016
ACTION:
This recommends the appropriate action to take as a result (YesINo) of the INSPECTION. How to perform
the action is described on the reference page specified by the
"w"
mark.
4BUOF3-017