Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMAZDA1995626 L4-1991CC 2.0L DOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULETECHNICAL SERVICE BULLETINSCPU - TROUBLESHOOTING PROCEDURES
1995 Mazda 626 L4-1991cc 2.0L DOHC
CPU - Troubleshooting Procedures
1995 Mazda 626 L4-1991cc 2.0L DOHCSECTION CPU - Troubleshooting Procedures
Bulletin No.: 007/96
Issued: 04/18/96
Revised:
Category
T
Applicable Model/s
1993-96 626/MX-6
Subject
CPU (CENTRAL PROCESSING UNIT) TROUBLESHOOTING PROCEDURES
APPLICABLE MODELS
1993-96 626/MX-6
DESCRIPTION
If a defect is suspected in the CPU (Central Processing Unit) follow the procedures in the attached instructions to properly inspect and repair the vehicle.
NOTE:
Service Managers - Please place a copy of this bulletin in each of the applicable workshop manuals.
CPU (Central Processing Unit) TROUBLESHOOTING
FLOWCHART 1 - LIGHT ON REMINDER CHIME SOUNDS - With the light switch turned off, ignition switch off and all doors closed.
FLOWCHART 2 - LIGHT ON REMINDER CHIME DOES NOT SOUND - With the light switch turned on, ignition switch off and any door(s) open.
FLOWCHART 3 - IGNITION KEY REMINDER CHIME SOUNDS - With ignition key removed from ignition and any door is opened.
FLOWCHART 4 - IGNITION KEY REMINDER CHIME DOES NOT SOUND - With the ignition key in the ignition and any door(s) opened.
FLOWCHART 5 - SEAT BELT WARNING CHIME SOUNDS - With seat belts fastened
FLOWCHART 6 - SEAT BELT WARNING CHIME WILL NOT SOUND - With seat belts unfastened.
FLOW CHART 7 - SECURITY INDICATOR LAMP DOES NOT ILLUMINATE
^ Check for indicator lamp.
^ Check for open circuit in the security indicator lamp circuitry in the instrument cluster
^ Inspect for damaged, pushed out pins, corrosion, loose wires at the instrument cluster. X-15 connector (93 model only), X-13 connector (94-96 models) and the 20-pin connector.
FLOWCHART 8 - THEFT DETERRENT SYSTEM WILL NOT ARM
FLOWCHART 9 - THEFT DETERRENT SYSTEM WILL ARM BUT ALARM IS INOPERABLE
FLOWCHART 10 - THEFT DETERRENT SYSTEM ALARM CONTINUES TO SOUND
Issued: 04/18/96
Revised:
Category
T
Applicable Model/s
1993-96 626/MX-6
Subject
CPU (CENTRAL PROCESSING UNIT) TROUBLESHOOTING PROCEDURES
APPLICABLE MODELS
1993-96 626/MX-6
DESCRIPTION
If a defect is suspected in the CPU (Central Processing Unit) follow the procedures in the attached instructions to properly inspect and repair the vehicle.
NOTE:
Service Managers - Please place a copy of this bulletin in each of the applicable workshop manuals.
CPU (Central Processing Unit) TROUBLESHOOTING
FLOWCHART 1 - LIGHT ON REMINDER CHIME SOUNDS - With the light switch turned off, ignition switch off and all doors closed.
FLOWCHART 2 - LIGHT ON REMINDER CHIME DOES NOT SOUND - With the light switch turned on, ignition switch off and any door(s) open.
FLOWCHART 3 - IGNITION KEY REMINDER CHIME SOUNDS - With ignition key removed from ignition and any door is opened.
FLOWCHART 4 - IGNITION KEY REMINDER CHIME DOES NOT SOUND - With the ignition key in the ignition and any door(s) opened.
FLOWCHART 5 - SEAT BELT WARNING CHIME SOUNDS - With seat belts fastened
FLOWCHART 6 - SEAT BELT WARNING CHIME WILL NOT SOUND - With seat belts unfastened.
FLOW CHART 7 - SECURITY INDICATOR LAMP DOES NOT ILLUMINATE
^ Check for indicator lamp.
^ Check for open circuit in the security indicator lamp circuitry in the instrument cluster
^ Inspect for damaged, pushed out pins, corrosion, loose wires at the instrument cluster. X-15 connector (93 model only), X-13 connector (94-96 models) and the 20-pin connector.
FLOWCHART 8 - THEFT DETERRENT SYSTEM WILL NOT ARM
FLOWCHART 9 - THEFT DETERRENT SYSTEM WILL ARM BUT ALARM IS INOPERABLE
FLOWCHART 10 - THEFT DETERRENT SYSTEM ALARM CONTINUES TO SOUND
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.