Mazda CX-7 2007 Workshop Manual page 94

DTC P0103[L3 WITH TC]
DTC P0103 MAF circuit high input
• The PCM monitors input voltage from the MAF sensor when the engine is running. If the input voltage is
above 4.9 V, the PCM determines that the MAF circuit has a malfunction.
Diagnostic support note
DETECTION
• This is a continuous monitor (CCM).
CONDITION
• MIL illuminates if PCM detects the above malfunction condition during the first drive cycle.
• FREEZE FRAME DATA is available.
• DTCs are stored in the PCM memory.
• MAF sensor malfunction
• Connector or terminal malfunction
POSSIBLE
• Short to power supply in the wiring harness between MAF/IAT sensor terminal C and PCM terminal 1AK
CAUSE
• Open circuit in the wiring harness between MAF/IAT sensor terminal B and PCM terminal 1P
MAF SENSOR
MAF/IAT SENSOR
HARNESS SIDE CONNECTOR
E D
01-02–52
ON-BOARD DIAGNOSTIC [L3 WITH TC]
MAIN RELAY
3
A
3
4
C
3
6
B
1BE 1BA 1AW 1AS 1AO 1AK 1AG 1AC 1Y 1U 1Q 1M
1BF 1BB 1AX 1AT 1AP 1AL 1AH 1AD 1Z 1V 1R 1N
C 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
5
1AK
5
1P
PCM
HARNESS SIDE CONNECTOR
1T 1P
id010239803300
1I 1E 1A
1J 1F 1B
1K 1G 1C
1L 1H 1D