Mazda CX-7 2007 Workshop Manual page 101

DTC P0112[L3 WITH TC]
DTC P0112 IAT circuit low input
• The PCM monitors the IAT sensor signal. If the PCM detects on IAT sensor voltage below 0.06 V, the PCM
determines that the IAT sensor circuit has a malfunction.
Diagnostic support note
DETECTION
• This is a continuous monitor (CCM).
CONDITION
• MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.
• FREEZE FRAME DATA is available.
• DTCs are stored in the PCM memory.
• IAT sensor malfunction
• Poor connection at the MAF/IAT sensor or PCM connector
POSSIBLE
• Short to ground between MAF/IAT sensor terminal D and PCM terminal 1M
CAUSE
• Short to each harness IAT signal circuit and IAT ground circuit.
• PCM malfunction
IAT SENSOR
MAF/IAT SENSOR
HARNESS SIDE CONNECTOR
E D C
ON-BOARD DIAGNOSTIC [L3 WITH TC]
3
5
6
D
3
6
E
1BE 1BA 1AW 1AS 1AO 1AK 1AG 1AC 1Y 1U 1Q 1M
1BF 1BB 1AX 1AT 1AP 1AL 1AH 1AD 1Z 1V 1R 1N
B A
1BG 1BC 1AY 1AU 1AQ 1AM 1AI 1AE 1AA 1W 1S 1O
1BH 1BD 1AZ 1AV 1AR 1AN 1AJ 1AF 1AB 1X
PCM
1M
1AR
PCM
HARNESS SIDE CONNECTOR
1T 1P
id010239803700
01-02
1I 1E 1A
1J 1F 1B
1K 1G 1C
1L 1H 1D
01-02–59