Operation Test
Carry out the EGR Control Inspection. (See EGR Control System Inspection.
Resistance Inspection
Note
1. Disconnect the negative battery cable.
2. Inspect resistance of the EGR valve coils.
Circuit Open/Short Inspection
1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION.)
2. Inspect the following wiring harness for open or short (continuity check).
Open circuit
- EGR valve terminal E (harness-side) and PCM terminal 4E
- EGR valve terminal A (harness-side) and PCM terminal 4H
- EGR valve terminal B (harness-side) and PCM terminal 4K
- EGR valve terminal F (harness-side) and PCM terminal 4N
- EGR valve terminal C or D (harness-side) and main relay terminal C (harness-side)
Short circuit
- EGR valve terminal E (harness-side) and GND
- EGR valve terminal A (harness-side) and GND
- EGR valve terminal B (harness-side) and GND
- EGR valve terminal F (harness-side) and GND
- EGR valve terminal C or D (harness-side) and power supply
3. Remove the EGR valve, and inspect for any damage or clogging.
Mazda 6 Service Manual: Steering gear and linkage removal/installation
Caution
Performing the following procedures without first removing the ABS
wheel-speed sensor may possibly cause an open circuit in the harness if it
is pulled by mistake. Before performing the following procedures, remove the
ABS wheel-speed sensor (axle side) and fix it to an appropri ...
Mazda 6 Service Manual: Dsc system inspection
Preparation
1. Verify that the battery is fully charged.
2. With ignition switch on, verify that the ABS warning light goes out after
2.4 seconds.
3. Turn the ignition switch off.
4. On level ground, jack up the vehicle and support it evenly on safety
stands.
5. Shift the transaxle to N posi ...