harness-side) and HO2S
terminal C (wiring harness-
side)
{
HO2S terminal A (wiring
harness-side) and HO2S
terminal D (wiring harness-
side)
{
HO2S terminal A (wiring
harness-side) and HO2S
terminal B (wiring harness-
side)
z
Are the resistances more than 10
kilohms?
No
Repair or replace suspected part, Go to
Step 9
6
INSPECT HO2S HEATER CIRCUIT
FOR OPEN CIRCUIT IN WIRING
HARNESS
z
For DTC P0053 Measure
resistance between PCM terminal
2J and front HO2S (RH) terminal
A.
z
For DTC P0054 Measure
resistance between PCM terminal
2AS and rear HO2S (RH) terminal
A.
z
For DTC P0059 Measure
resistance between PCM terminal
2E and front HO2S (LH) terminal
A.
z
For DTC P0060 Measure
resistance between PCM terminal
2AO and rear HO2S (LH)
terminal A.
z
Is the resistance less than 5.0
ohms?
Yes
Go to the next step.
No
Repair or replace suspected part, Go to
Step 9.
7
INSPECT INTERNAL RESISTANCE
OF HO2S HEATER
z
Measure the resistance between
the suspect HO2S terminal A and
C on the component side.
z
Is the resistance between 3-30
ohms?
Yes
Go to the next step.
No
Replace the HO2S.
(See
FRONT HEATED OXYGEN
SENSOR
.)
(HO2S) REMOVAL/INSTALLATION
[MZI-3.5].)
(See
REAR HEATED OXYGEN
SENSOR
.)
(HO2S) REMOVAL/INSTALLATION
[MZI-3.5].)
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:26:29 AM
Page 46
© 2005 Mitchell Repair Information Company, LLC.