Coupler (pin holder) damage
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 AND VSS)
Fig. 11: Variable Resistance Type 2 Sensor Diagram
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE Symptom Troubleshooting (MZI-3.5) - CX-9
Microsoft
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