Pin discoloration (blackness)
z
If there are no problems, proceed to next investigation below.
Standard power supply system inspection for variable resistance type 1
z
Confirm that the #3 terminal is at
5 V.
{
If the measured voltage on the #3 terminal is
5 V
, inspect the following points on the sensor
connector.
{
If there is no problem, inspect for the following:
z
Female terminal opening is loose.
z
Coupler (pin holder) damage
z
Pin discoloration (blackness)
{
If the #3 terminal measures other than
5 V
, inspect for the following:
z
Open or short circuit in wiring harness
z
Harness/pin crimp is loose or disconnected.
GND system inspection for variable resistance type 1
z
Confirm that terminal sensor #5 is at
0 V.
{
If it is at
0 V
, inspect the sensor.
z
If necessary, replace the sensor.
{
If not, inspect for the following:
z
Open or short circuit in wiring harness
z
Female terminal opening is loose causing an open or short circuit in wiring harness
z
Coupler (pin holder) damage
z
Pin discoloration (blackness)
z
Harness/pin crimp is loose or disconnected.
Variable resistance type 2 (mass air flow (MAF) sensor & VSS)
Fig. 14: Variable Resistance Type 2 (Mass Air Flow Sensor & VSS)
Courtesy of MAZDA MOTORS CORP.
2008 Mazda CX-9 Grand Touring
2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9
Microsoft
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