1. Disconnect the PCM connector. (See
PCM REMOVAL/INSTALLATION [MZI-3.5]
.)
2. Inspect the following wiring harnesses for open or short. (Continuity inspection)
Open circuit
z
If there is no continuity, the circuit is open. Repair or replace the wiring harness.
{
KS terminal A and PCM terminal 2Q
{
KS terminal B and PCM terminal 2M
{
KS terminal C and PCM terminal 2L
{
KS terminal D and PCM terminal 2G
Short circuit
z
If there is continuity, the circuit is shorted. Repair or replace the wiring harness.
{
KS terminal A and power supply
{
KS terminal A and body ground
{
KS terminal B and power supply
{
KS terminal B and body ground
{
KS terminal C and power supply
{
KS terminal C and body ground
{
KS terminal D and power supply
{
KS terminal D and body ground
CYLINDER HEAD TEMPERATURE (CHT) SENSOR
REMOVAL/INSTALLATION [MZI-3.5]
1. Disconnect the negative battery cable.
2. Remove the following part for easier access.
Perform the following procedure to remove the intake manifold.
1. Remove the ventilation hose. (see
QUICK RELEASE CONNECTOR (EMISSION SYSTEM)
REMOVAL/INSTALLATION [MZI-3.5].
)
2. Remove the vacuum hose (to purge solenoid valve). (see
QUICK RELEASE CONNECTOR
(EMISSION SYSTEM) REMOVAL/INSTALLATION [MZI-3.5].
)
3. Remove the fuel hose. (see
QUICK RELEASE CONNECTOR (FUEL SYSTEM)
REMOVAL/INSTALLATION [MZI-3.5].
)
4. Remove the fuel distributor. (see
FUEL INJECTOR REMOVAL/INSTALLATION [MZI-
3.5]
.)
NOTE:
z
Do not reuse the CHT sensor, install a new sensor.
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE Control System (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:25:31 AM
Page 38
© 2005 Mitchell Repair Information Company, LLC.