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Security System and Locks System (Keyless Entry System): Diagnosis Mazda MX-5 NC

Door Locks & Anti-Theft Systems 2 illustrations ~108 words

KEYLESS CONTROL MODULE INSPECTION [WITH KEYLESS ENTRY SYSTEM]

  1. Measure the voltage or inspect for continuity according to the «TERMINAL VOLTAGE TABLE»(ref-244528-S19504569912006092400000) . If the voltage is not as specified in the «TERMINAL VOLTAGE TABLE»(ref-244528-S19504569912006092400000) , inspect the parts under "Inspection item(s)" and related wiring harnesses.

Scheme 80

Scheme 80: Terminal Voltage Table (Reference)
TerminalSignal nameConnected toMeasured conditionVoltage (V)/ContinuityInspection item(s)
1ADoor unlock controlDoor lock actuator (driver's side)Door lock actuator unlocking1.0 or less --> B+ --> 1.0 or lessDoor lock actuator (driver's side) Related wiring harnesses
Other1.0 or less
1BGNDGNDUnder any condition: Inspect for continuity to GND.Continuity detectedRelated wiring harnesses
1CDoor lock controlDoor lock actuatorDoor lock actuator locking1.0 or less --> B+ --> 1.0 or lessDoor lock actuator Related wiring harnesses
Other1.0 or less
1DDoor unlock controlDoor lock actuator (except driver's side)Door lock actuator unlocking1.0 or less --> B+ --> 1.0 or lessDoor lock actuator (except driver's side) Related wiring harnesses
Other1.0 or less
1EPower supplyD.LOCK 30 A fuseUnder any conditionB+D.LOCK 30 A fuse Battery
1FPower supplyROOM 15 A fuseUnder any conditionB+ROOM 15 A fuse Battery
2BIG1ENGINE 10 A fuseIgnition switch is at ON positionB+ENGINE 10 A fuse
Ignition switch is at LOCK or ACC position1.0 or less
2CGNDBody groundUnder any condition: Inspect for continuity to ground.Continuity detectedGND
2FSecurity lightInstrument clusterUnder any condition: Inspect for continuity to instrument cluster.Continuity detectedInstrument cluster
2OKey reminder switchSteering lock unitKey reminder switch is ONB+Steering lock unit
Other1.0 or less
2RTPMS signalInstrument clusterUnder any condition: Inspect for continuity to instrument cluster.Continuity detectedInstrument cluster
2SPower supply (keyless receiver)Keyless receiverUnder any conditionB+Keyless receiver
2TCommunication (keyless receiver)Keyless receiverUnder any condition: Inspect for continuity to keyless receiver.Continuity detectedKeyless receiver
2UCommunication (keyless receiver)Keyless receiverUnder any condition: Inspect for continuity to keyless receiver.Continuity detectedKeyless receiver
2ZTrunk open signalTrunk compartment light switchTrunk lid open (trunk compartment light switch on)1.0 or lessTrunk compartment light switch Related wiring harnesses
Trunk lid closed (trunk compartment light switch off)B+
4BLock/unlock inputDoor lock switchDoor lock switch is locked2.5Door lock switch (driver-side) Door lock switch (passenger-side) Related wiring harnesses
Door lock switch is unlocked1.0 or less
Other5
4DLock/unlock inputPassenger-side door key cylinder switchAt the moment key cylinder is locked2.5Passenger-side door key cylinder switch Related wiring harnesses
At the moment key cylinder is unlocked1.0 or less
At the moment key cylinder is neutral position5
4ELock signal inputDoor lock-link switch (driver-side)Driver-side door is locked: Inspect for continuity to ground.Continuity detectedDoor lock-link switch (driver-side)
Driver-side door is unlocked: Inspect for continuity to ground.No continuity
4GLock/unlock inputDriver-side door key cylinder switchAt the moment key cylinder is locked2.5Driver-side door key cylinder switch Related wiring harnesses
At the moment key cylinder is unlocked1.0 or less
At the moment key cylinder is neutral position5
4IUnlock signal inputDoor lock-link switch (driver-side)Driver-side door is unlocked: Inspect for continuity to ground.Continuity detectedDoor lock-link switch (driver-side)
Driver-side door is locked: Inspect for continuity to ground.No continuity
4KUnlock input (trunk lid)Trunk key cylinder switchAt the moment key cylinder is unlocked1.0 or lessTrunk key cylinder switch Related wiring harnesses
At the moment key cylinder is neutral position5
4NHazard outputHazard warning lightPress the LOCK button (transmitter)B+ --> 1.0 or less --> B+Hazard warning light Related wiring harnesses
Press the UNLOCK button (transmitter)B+ --> 1.0 or less --> B+ --> 1.0 or less --> B+
OtherB+
4PTrunk open outputTrunk open relayPress the trunk open switch1.0 or lessTrunk open relay Related wiring harnesses
OtherB+
4QDoor switch signal (RH) outputDoor switchDoor open (RH) (Door switch on)1.0 or lessDoor switch (RH) Related wiring harnesses
Door closed (RH) (Door switch off)B+
4RUnlock signal inputDoor lock-link switch (passenger-side)Passenger-side door is unlocked: Inspect for continuity to ground.Continuity detectedDoor lock-link switch (passenger-side)
Passenger-side door is locked: Inspect for continuity to ground.No continuity
4TDoor switch signal (LH) outputDoor switchDoor open (LH) (Door switch on)1.0 or lessDoor switch (LH) Related wiring harnesses
Door closed (LH) (Door switch off)B+
4UHorn on/offHorn relayOtherB+Horn relay Related wiring harnesses
Transmitter LOCK button is pressed twice within 5 s.B+--> 1.0 or less --> B+
4VHood switch signalHood switchHood open (Hood latch switch off)B+Hood latch switch Related wiring harnesses
Hood closed (Hood latch switch on)1.0 or less

TERMINAL VOLTAGE TABLE

KEYLESS RECEIVER INSPECTION [WITH KEYLESS ENTRY SYSTEM]

  1. Measure the voltage or inspect for continuity according to the «TERMINAL VOLTAGE TABLE»(ref-244528-S30765449742006092400000) . If the voltage is not as specified in the «TERMINAL VOLTAGE TABLE»(ref-244528-S30765449742006092400000) , inspect the parts under "Inspection item(s)" and related wiring harnesses.

Scheme 81

Scheme 81: Terminal Voltage Table (Reference)
TerminalSignal nameConnected toMeasured conditionVoltage (V)/ContinuityInspection Item(s)
APower supplyKeyless control moduleUnder any conditionB+Keyless control module Related wiring harnesses
CDataKeyless control moduleUnder any condition: Inspect the wiring harness between the keyless receiver and keyless control module terminal 3U for continuity.Continuity detectedKeyless control module Related wiring harnesses
EGNDBody groundUnder any condition: Inspect for continuity to ground.Continuity detectedGND

TERMINAL VOLTAGE TABLE