Ignition Timing Inspection

WARNING: This page is about a different car, the 2003 Mazda Protege5 and 2003 Mazda Protege. However, it is still accessible from the selected car via links, so may be relevant.

Perform ENGINE TUNE-UP PREPARATION .
Connect the DLC terminals TEN and GND using a jumper wire.
CAUTION:
- Connecting the wrong DLC terminal may possibly cause a malfunction. Carefully connect the specified terminal only.
Verify that the RPM PID is within the specification.
- If not as specified, adjust the idle speed. (See IDLE SPEED ADJUSTMENT .)
  
  Fig 1: Inspecting Ignition Timing
  Courtesy of MAZDA MOTORS CORP.
  
  Specification
  
  650-750 (700+/-50) rpm
- Connect the timing light to the high-tension lead of the No.1 cylinder.
- Verify that the timing mark (yellow) on the crankshaft pulley is within the specification.
  - If not as specified, inspect following.
    - CMP sensor
    - CKP sensor
    - TP sensor
    - ECT sensor
    - Neutral switch (MTX)
    - Clutch switch (MTX)
    - TR switch (ATX)
  - If the devices are normal, replace the PCM. (See POWERTRAIN CONTROL MODULE .)
  Ignition timing
  
  BTDC 9°-11° (10°+/-1°) (TIMING MARK [YELLOW])
- Disconnect the jumper wire.
- Verify that the idle speed is within the specification.
  - If not as specified, adjust the idle speed.
- Connect the timing light to the high-tension lead of the No.1 cylinder.
- 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 (MTX)
    - Clutch switch (MTX)
    - TR switch (ATX)
  - If the devices are normal, replace the PCM. (See POWERTRAIN CONTROL MODULE .)
    
    Fig 2: Identifying Timing Mark (Yellow, White) On Crankshaft Pulley
    Courtesy of MAZDA MOTORS CORP.
Ignition timing

BTDC 6°-18° (TIMING MARK [YELLOW])