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.
2007 Mazda 3 L4-2.3LFACTORY OEM SERVICE PROCEDURE
Scan Tool Testing and Procedures
PASSENGER JUNCTION BOX (PJB) INSPECTION
Without Using the SST
1. Remove the glove compartment.
2. Remove the PJB with the connector connected.
3. Measure the voltage at each terminal and inspect for the continuity between the terminals and ground is as indicated in the Terminal Voltage Tables (Reference).
- If the voltage or continuity is not as specified in the Terminal Voltage Table (Reference), inspect the parts under "Inspection item (s)".
- If the system does not work properly even though the parts or related wiring harnesses do not have any malfunction, replace the PJB.
Using SST (M-MDS)
1. Connect the M-MDS to the DLC-2 connector.
2. After the vehicle is identified, select the following items from the initialization screen of the M-MDS.
- When using the IDS (laptop PC)
- Select the "Toolbox" tab.
- Select "DataLogger".
- Select "Modules".
- Select "GEM".
- When using the PDS (Pocket PC)
- Select "Module Tests".
- Select "GEM".
- Select "DataLogger".
3. Select the applicable PID from the PID table.
4. Verify the PID data according to the directions on the screen.
NOTE: The PID data screen function is used for monitoring the calculated value. Therefore, if the monitored value of the output parts is not within the specification, inspection of the monitored value of input parts corresponding to applicable output part control is necessary. In addition, because the system does not display output part malfunction as abnormality in the monitored value, it is necessary to inspect the output part individually.
Without Using the SST
1. Remove the glove compartment.
2. Remove the PJB with the connector connected.
3. Measure the voltage at each terminal and inspect for the continuity between the terminals and ground is as indicated in the Terminal Voltage Tables (Reference).
- If the voltage or continuity is not as specified in the Terminal Voltage Table (Reference), inspect the parts under "Inspection item (s)".
- If the system does not work properly even though the parts or related wiring harnesses do not have any malfunction, replace the PJB.
Using SST (M-MDS)
1. Connect the M-MDS to the DLC-2 connector.
2. After the vehicle is identified, select the following items from the initialization screen of the M-MDS.
- When using the IDS (laptop PC)
- Select the "Toolbox" tab.
- Select "DataLogger".
- Select "Modules".
- Select "GEM".
- When using the PDS (Pocket PC)
- Select "Module Tests".
- Select "GEM".
- Select "DataLogger".
3. Select the applicable PID from the PID table.
4. Verify the PID data according to the directions on the screen.
NOTE: The PID data screen function is used for monitoring the calculated value. Therefore, if the monitored value of the output parts is not within the specification, inspection of the monitored value of input parts corresponding to applicable output part control is necessary. In addition, because the system does not display output part malfunction as abnormality in the monitored value, it is necessary to inspect the output part individually.
Factory Service Tools
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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.