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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSMAZDA1999PROTEGE LX L4-1.6L DOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMSERVICE AND REPAIR
1999 Mazda Protege LX L4-1.6L DOHC
Ignition System: Service and Repair
1999 Mazda Protege LX L4-1.6L DOHCSECTION Service and Repair
ENGINE TUNE-UP PREPARATION
1. Warm up the engine to normal operating temperature.
2. Shift the transaxle into neutral.
3. Turn off all electrical loads.
- Headlight switch
- Fan switch
- Rear window defroster switch
- A/C switch
4. Verify that the steering wheel is at straight ahead position.
5. Connect the Special Service Tool (SST) NGS tester to the DLC and select "PID DATA MONITOR AND RECORD".
6. Access RPM PID. Press the trigger key to enter this selection.
7. Wait until the electrical fan stops.
IGNITION TIMING INSPECTION
1. Perform "Engine Tune-up Preparation" above.
2. Verify that the RPM PID is within the specification.
Specification: 650 - 750 (700 ± 50) rpm
If not as specified, adjust the idle speed.
3. Connect the timing light to the high-tension lead of the No.1 cylinder.
4. Verify that the timing mark (yellow) on the crankshaft pulley is within the specification.
- If not as specified, inspect the following.
- CMP sensor
- CKP sensor
- TP sensor
- ECT sensor
- Neutral switch (M/T)
- Clutch switch (M/T)
- TR switch (A/T)
- If the devices are normal, replace the PCM.
Ignition timing: BTDC 9 ° - 11 ° (10 ° ± 1 °) (TIMING MARK: YELLOW)
5. Connect the (SST) (System selector) to the DLC.
6. Set switch A to position 1.
7. Set the test switch to SELF TEST
8. Verify that the timing mark (yellow) on the crankshaft pulley is within the specification.
Specification: BTDC 6 ° - 18 °
- If not as specified, inspect the following.
- CMP sensor
- CKP sensor
- TP sensor
- ECT sensor
- Neutral switch (M/T)
- Clutch switch (M/T)
- TR switch (A/T)
- If the devices are normal, replace the PCM.
1. Warm up the engine to normal operating temperature.
2. Shift the transaxle into neutral.
3. Turn off all electrical loads.
- Headlight switch
- Fan switch
- Rear window defroster switch
- A/C switch
4. Verify that the steering wheel is at straight ahead position.
5. Connect the Special Service Tool (SST) NGS tester to the DLC and select "PID DATA MONITOR AND RECORD".
6. Access RPM PID. Press the trigger key to enter this selection.
7. Wait until the electrical fan stops.
IGNITION TIMING INSPECTION
1. Perform "Engine Tune-up Preparation" above.
2. Verify that the RPM PID is within the specification.
Specification: 650 - 750 (700 ± 50) rpm
If not as specified, adjust the idle speed.
3. Connect the timing light to the high-tension lead of the No.1 cylinder.
4. Verify that the timing mark (yellow) on the crankshaft pulley is within the specification.
- If not as specified, inspect the following.
- CMP sensor
- CKP sensor
- TP sensor
- ECT sensor
- Neutral switch (M/T)
- Clutch switch (M/T)
- TR switch (A/T)
- If the devices are normal, replace the PCM.
Ignition timing: BTDC 9 ° - 11 ° (10 ° ± 1 °) (TIMING MARK: YELLOW)
5. Connect the (SST) (System selector) to the DLC.
6. Set switch A to position 1.
7. Set the test switch to SELF TEST
8. Verify that the timing mark (yellow) on the crankshaft pulley is within the specification.
Specification: BTDC 6 ° - 18 °
- If not as specified, inspect the following.
- CMP sensor
- CKP sensor
- TP sensor
- ECT sensor
- Neutral switch (M/T)
- Clutch switch (M/T)
- TR switch (A/T)
- If the devices are normal, replace the PCM.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.