TROUBLESHOOTING
N 0 .2 6 IN TER M ITTEN T CONCERNS
26
Intermittent concerns
DESCRIPTION
Symptom occurs randomly and is difficult to diagnose.
Diagnostic Procedure
STEP
INSPECTION
RESULTS
ACTION
1
Talk to customer.
Retrieve vehicle service history.
Does vehicle have a number of previous repairs
and components replaced for a certain
symptom?
Yes
Go to next step.
No
Go to Symptom Index.
2
Connect NGS tester to DLC.
If input is switch-type component, turn on
manually.
Turn ignition switch on.
Access PIDs for suspect component.
Lightly tap on suspect component, wiggle and
pull each wire/connector at suspect component
or PCM.
Are any PID values out of range, or do they
suddenly change and go back into range?
Yes
Inspect each wire for corrosion, bent or loose
terminal crimps.
No
Go to next step.
3
Start engine.
Lightly tap on suspect component, wiggle and
pull each wire/connector at suspect component
or PCM.
Are any PID values out of range, or do they
suddenly change and go back into range?
Yes
Inspect each wire for corrosion, bent or loose
terminal crimps.
No
Go to next step.
4
Start engine.
Accurately spray water on suspect component
wire, component or vacuum line related to
possible fault area.
Are any PID values out of range, or suddenly
change and go back into range, or was there a
noticeable engine misfire/stumble?
Yes
Fault occurred while spraying on
component:
Replace part and verify repair.
Fault occurred while spraying wiring:
Inspect each wire for corrosion, bent or loose
terminals and poor wire terminal crimps.
Fault occurred while spraying vacuum line:
Repair vacuum hoses.
No
Inspect wire and connector at suspect
component for corrosion, bent or loose
terminals, poor wire terminal crimps and high
tension of wire.
Repair as necessary.
N0.27 CONSTANT VOLTAGE
27
Constant voltage
DESCRIPTION
Incorrect constant voltage
POSSIBLE
CAUSE
• Constant voltage circuit malfunction
Note
• TP sensor use constant voltage.
Diagnostic Procedure
STEP
INSPECTION
RESULTS
ACTION
1
Disconnect TP sensor connector.
Turn ignition switch on.
Measure voltage between following TP sensor
connector terminals:
• Constant voltage terminal - GND terminal
Is constant voltage greater than 6.0 V?
Yes
Repair constant voltage circuit short to power in
harness.
No
Go to next step.
2
Is voltage across battery terminals greater than
10.5 V?
Yes
Go to next step.
No
Inspect charging system.
F1-142
Summary of Contents for 626 Station Wagon
Page 25: ...CONTROL SYSTEM WIRING DIAGRAM With Immobilizer System OUTLINE F1 4 ...
Page 183: ...CONTROL SYSTEM COMPONENT LOCATION F2 7 ...
Page 204: ...MANUAL TRANSAXLE FEATURES OUTLINE J 2 OUTLINE OF CONSTRUCTION J 2 SPECIFICATIONS J 2 D J 1 ...
Page 266: ...SHIFT MECHANISM 6 Apply grease to the cam as shown K2 59 ...
Page 418: ...TROUBLESHOOTING KEYLESS ENTRY SYSTEM ON BOARD DIAGNOSTIC FUNCTION S 37 ...
Page 454: ...WARNING AND INDICATOR SYSTEM O p e ra tin g O rd e r T 32 ...