Troubleshooting Index; No. 1 One Or More On-Board Diagnostic Functions Inoperative; Functions Inoperative - Mazda 2002 6 Workshop Manual

TROUBLESHOOTING [KEYLESS ENTRY SYSTEM]

TROUBLESHOOTING INDEX

No. TROUBLESHOOTING ITEM
1 One or more on-board
diagnostic functions inoperative.
2 All on-board diagnostic

functions inoperative.

3 Transmitter ID code cannot be
reprogrammed.
End Of Sie

NO. 1 ONE OR MORE ON-BOARD DIAGNOSTIC FUNCTIONS INOPERATIVE

• When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while
doing the inspection to discover whether poor contact points are the cause of any intermittent malfunctions. If
there is a problem, check to make sure connectors, terminals and wiring harnesses are connected correctly
and undamaged.
1 One or more on-board diagnostic functions inoperative
• Malfunction in hazard warning light system, or door lock linkage system, driver's door key cylinder
DESCRIPTION
switch system.
• Malfunction in hazard warning light system
— Hazard warning light circuit
— Door lock timer unit malfunction
POSSIBLE
— Malfunction in wiring harness between door lock timer unit and flasher unit
CAUSE
• Malfunction in door lock linkage
• Malfunction in door lock timer unit door lock/unlock signal circuit
— Door lock timer unit malfunction
Diagnostic procedure
Note
• For with theft-deterrent system, follow the procedure from Step 4.
STEP
1 INSPECT HAZARD WARNING LIGHT
OPERATION DURING ON-BOARD
DIAGNOSIS
• Did hazard warning lights flash during on-
board diagnostic function operation?
2 INSPECT HAZARD WARNING LIGHT
CIRCUIT
• Do hazard warning lights flash when hazard
warning switch is on?
*3
CHECK TO SEE WHETHER MALFUNCTION
IS IN WIRING HARNESS (BETWEEN DOOR
LOCK TIMER UNIT AND FLASHER UNIT) OR
DOOR LOCK TIMER UNIT
• Measure voltage at door lock timer unit
connector terminal I (24 pin) during on-board
diagnostic function operation.
— When hazard warning light flashed:
B+⇔below 1.0 V
• Is voltage as above?
4 MAKE SURE THAT ALL DOORS LOCK AND
UNLOCK DURING ON-BOARD DIAGNOSIS
• Did all doors unlock and lock during on-
board diagnostic function operation?
5 INSPECT DOOR LOCK LINKAGE
• Operate door lock knob and make sure door
locks and unlocks manually.
• Does every door lock system work?
DESCRIPTION
• Malfunction in hazard warning light system
(except vehicle with theft-deterrent system), or
door lock linkage system, driver's door key
cylinder switch system.
• Malfunction in door lock timer unit power
supply circuit, door switch circuit, cargo
compartment light circuit or door lock timer
unit ground circuit.
• Malfunction in transmitter battery, transmitter,
door lock timer unit bracket, door lock timer
unit bracket ground screw or door lock timer
unit circuit.
INSPECTION
Yes Go to Step 4.
No Go to next step.
Yes Go to next step.
No Inspect hazard warning light circuit.
Yes Recheck malfunction symptoms, then repeat from Step 1 if
malfunction reoccurs.
• Inspect wiring harness between door lock timer unit and
No
flasher unit.
— If wiring harness is OK, replace door lock timer unit
and reprogram transmitter ID code, then go to Step 7.
— If wiring harness malfunction, repair wiring harness,
then go to Step 7.
Yes Recheck malfunction symptoms, then repeat from Step 1 if
malfunction reoccurs.
No Go to next step.
Yes Go to next step.
No Inspect door lock linkage.
A6E778269000W05
PAGE
(See S–131 NO. 1 ONE OR
MORE ON-BOARD DIAGNOSTIC
FUNCTIONS INOPERATIVE)
(See S–132 NO. 2 ALL
ON-BOARD DIAGNOSTIC
FUNCTIONS INOPERATIVE)
(See S–133 NO. 3
TRANSMITTER ID CODE
CANNOT BE REPROGRAMMED)
A6E778269000W06
ACTION
S–131
S