Mazda CX-7 2007 Workshop Manual page 135

DTC P0140 Rear HO2S no activity detected
REAR HO2S
REAR HO2S
WIRING HARNESS-SIDE CONNECTOR
Diagnostic procedure
STEP
1 VERIFY FREEZE FRAME DATA AND
DIAGNOSTIC MONITORING TEST RESULTS
HAVE BEEN RECORDED
• Have the FREEZE FRAME DATA and
DIAGNOSTIC MONITORING TEST RESULTS
(HO2S related) been recorded?
2 VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
• Verify related Service Bulletins and/or on-line
repair information availability.
• Is any related repair information available?
3 VERIFY RELATED PENDING AND STORED
DTC
Note
• If the fuel monitor, DTC P0132 is retrieved,
ignore it until P0140 is fixed.
• Turn the ignition switch off, then to the ON
position. (Engine off)
• Verify pending and stored DTCs using the M-
MDS.
• Are other DTCs present?
4 IDENTIFY TRIGGER DTC FOR FREEZE FRAME
DATA
• Is DTC P0140 on the FREEZE FRAME DATA?
ON-BOARD DIAGNOSTIC [L3 WITH TC]
7
A
B
1BE 1BA 1AW 1AS 1AO 1AK 1AG 1AC 1Y 1U 1Q 1M
A C
1BF 1BB 1AX 1AT 1AP 1AL 1AH 1AD 1Z 1V 1R 1N
B D
1BG 1BC 1AY 1AU 1AQ 1AM 1AI 1AE 1AA 1W 1S 1O
1BH 1BD 1AZ 1AV 1AR 1AN 1AJ 1AF 1AB 1X
2BE 2BA 2AW 2AS 2AO 2AK 2AG 2AC 2Y 2U 2Q 2M
2BF 2BB 2AX 2AT 2AP 2AL 2AH 2AD 2Z 2V 2R 2N
2BG 2BC 2AY 2AU 2AQ 2AM 2AI 2AE 2AA 2W 2S 2O
2BH 2BD 2AZ 2AV 2AR 2AN 2AJ 2AF 2AB 2X 2T 2P
INSPECTION
PCM
2Q
1BC
PCM
WIRING HARNESS-SIDE CONNECTOR
Yes Go to the next step.
No Record the FREEZE FRAME DATA and DIAGNOSTIC
MONITORING TEST RESULTS on the repair order, then
go to the next step.
Yes Perform the repair or diagnosis according to the available
repair information.
• If the vehicle is not repaired, go to the next step.
No Go to the next step.
Yes Go to the appropriate DTC troubleshooting procedures.
(See01-02-13 DTC TABLE[L3 WITH TC].)
No Go to the next step.
Yes Go to the next step.
No Go to troubleshooting procedures for the DTC on the
FREEZE FRAME DATA.
(See01-02-13 DTC TABLE[L3 WITH TC].)
1I 1E 1A
1J 1F 1B
1K 1G 1C
1T 1P 1L 1H 1D
2I 2E 2A
2J 2F 2B
2G 2C
2K
2L 2H 2D
ACTION
01-02–93
01-02