Mazda 6 2002, Workshop Manual

Page: 893 / 1248

TROUBLESHOOTING [KEYLESS ENTRY SYSTEM]
S–133
S
End Of Sie
NO. 3 TRANSMITTER ID CODE CANNOT BE REPROGRAMMED
A6E778269000W08
Diagnostic procedure
*4 CHECK TO SEE WHETHER MALFUNCTION
IS IN WIRING HARNESS (SHORT TO B+
BETWEEN FUSE BLOCK AND DOOR LOCK
TIMER UNIT, OR BETWEEN DOOR LOCK
TIMER UNIT AND GROUND) OR
ELSEWHERE
•
Turn ignition switch to LOCK position.
•
Disconnect door lock timer unit connector.
•
Measure voltage at following door lock timer
unit connector terminals:
— IG1 signal (Terminal B (24 pin))
•
Is voltage B+ ?
Yes Repair malfunctioning wiring harness, then go to Step 8.
No Go to next step.
*5 CHECK TO SEE WHETHER MALFUNCTION
IS IN WIRING HARNESS (LACK OF
CONTINUITY BETWEEN DOOR LOCK TIMER
UNIT AND GROUND) OR ELSEWHERE
•
Is there continuity between door lock timer
unit connector terminal W (24 pin) and
ground?
Yes Go to next step.
No Repair wiring harness between door lock timer unit and
ground, then go to Step 8.
6 INSPECT FOR CHECK CODE 04 IN
INSTRUMENT CLUSTER
•
Inspect door switch using instrument cluster
input/output check mode.
(See Section T)
•
Does DTC 04 function properly?
Yes Go to next step.
No Repair door switch system using DTC 04 inspection
procedure, then go to Step 8.
7 INSPECT DOOR LOCK TIMER UNIT OR
WIRING HARNESS (BETWEEN DOOR LOCK
TIMER UNIT AND DOOR SWITCHES, CARGO
COMPARTMENT LIGHT SWITCH FOR
CONTINUITY)
•
Open the driver-side door.
•
Is there continuity between door lock timer
unit connector terminal K, G (24 pin) and
ground?
Yes Replace door lock timer unit and reprogram door lock timer
unit ID code, then go to next step.
No Repair wiring harness between door lock timer unit and door
switch(es), cargo compartment light switch then go to next
step.
8 RECHECK MALFUNCTION SYMPTOM AFTER
REPAIR
•
Does keyless entry system operate
properly?
Yes Troubleshooting completed.
Explain repairs to customer.
No Recheck malfunction symptoms, then repeat from Step 1 if
malfunction reoccurs.
STEP INSPECTION ACTION
3 Transmitter ID code cannot be reprogrammed
DESCRIPTION
•
Malfunction in transmitter battery, transmitter door lock timer unit bracket, door lock timer unit bracket
ground screw or door lock timer unit circuit.
POSSIBLE
CAUSE
•
Malfunction in transmitter battery, transmitter, door lock timer unit bracket, door lock timer unit bracket
ground screw or door lock timer unit circuit
— Transmitter battery, transmitter, door lock timer unit bracket, door lock timer unit bracket ground
screw or door lock timer unit malfunction
STEP INSPECTION ACTION
1 INSPECT TRANSMITTER BATTERY
INSTALLATION AND TYPE
•
Visually inspect transmitter battery.
•
Are below items okay?
— Transmitter battery installation (correct
polarity)
— Battery type (CR2025)
Yes Go to next step.
No Set transmitter battery properly or replace with specified
transmitter battery (CR2025), then go to Step 8.
2 INSPECT TRANSMITTER BATTERY
TERMINALS FOR RUST AND POOR
CONNECTION
•
Visually inspect transmitter.
— Is there rust on transmitter battery
terminals (positive or negative pole)?
— Is there poor connection between
terminals and battery?
Yes Replace transmitter battery or repair transmitter battery
terminal, then go to Step 8.
No Go to next step.