Dtc P0480[L3 With Tc] - Mazda CX-7 2007 Workshop Manual

DTC P0480[L3 WITH TC]

DTC P0480 Fan control circuit problem
• The PCM monitors the input voltage from the fan control module No.1. If the voltage remains low or high,
the PCM determines that the fan control circuit has a malfunction.
Diagnostic support note
DETECTION
• This is a continuous monitor (Other).
CONDITION
• The MIL does not illuminate.
• FREEZE FRAME DATA is not available.
• The DTC is stored in the PCM memory.
• Fan control module No.1 malfunction
• Connector or terminal malfunction
• Short to the power supply in the wiring harness between fan control module No.1 terminal 1B and PCM
POSSIBLE
terminal 1AE
CAUSE
• Short to ground in the wiring harness between fan control module No.1 terminal 1B and PCM terminal 1AE
• Open circuit in the wiring harness between fan control module No.1 terminal 1B and PCM terminal 1AE
• PCM malfunction
FAN CONTROL MODULE No.1
8
FAN CONTROL MODULE No.1
WIRING HARNESS-SIDE CONNECTOR
1C
01-02–152
ON-BOARD DIAGNOSTIC [L3 WITH TC]
FROM COOLING FAN FUSE
1A
3
4 5
1B
7
1C
1BE 1BA 1AW 1AS 1AO 1AK 1AG 1AC 1Y 1U 1Q 1M
1B 1A
1BF 1BB 1AX 1AT 1AP 1AL 1AH 1AD 1Z 1V 1R 1N
1BG 1BC 1AY 1AU 1AQ 1AM 1AI 1AE 1AA 1W 1S 1O
1BH 1BD 1AZ 1AV 1AR 1AN 1AJ 1AF 1AB 1X
PCM
6
1AE
PCM
WIRING HARNESS-SIDE CONNECTOR
id010239807400
1I 1E 1A
1J 1F 1B
1K 1G 1C
1T 1P 1L 1H 1D