Fig. 49: Identifying PCM Harness Side Connector
Courtesy of MAZDA MOTORS CORP.
Open Circuit
If there is no continuity in the following wiring harnesses, there is an open circuit. Repair or replace the
wiring harness.
APP sensor terminal A and PCM terminal 1AJ
APP sensor terminal B and PCM terminal 1AV
APP sensor terminal C and PCM terminal 1AP
APP sensor terminal D and PCM terminal 1AL
APP sensor terminal E and PCM terminal 1AS
APP sensor terminal F and PCM terminal 1AO
Short Circuit
If there is continuity in the following wiring harnesses, there is a short circuit. Repair or replace the
wiring harness.
APP sensor terminal A and body ground
APP sensor terminal B and power supply
APP sensor terminal C and body ground
APP sensor terminal C and power supply
APP sensor terminal D and body ground
APP sensor terminal E and power supply
APP sensor terminal F and body ground
APP sensor terminal F and power supply
CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [LF]
AIR GAP INSPECTION
1. Verify that the CKP sensor is securely installed.
2. Using a thickness gauge, measure the air gap between the plate projections at the back of crankshaft
pulley and the CKP sensor.
If not within the specification, inspect the plate projections for cracks or bending.
If there is any malfunction, replace the crankshaft pulley. (See
ENGINE
REMOVAL/INSTALLATION [LF]
.)
NOTE:
Before performing the following inspection, make sure to follow the
procedure as indicated in the troubleshooting flow diagram. (See
TROUBLESHOOTING PROCEDURE .)
2007 Mazda MX-5 Miata Sport
2007 ENGINE PERFORMANCE Engine Control System - MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:41:10 PM
Page 75
© 2005 Mitchell Repair Information Company, LLC.