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Circuit Open/Short Inspection

Disconnect the PCM connector.
Disconnect the KS connector.
Inspect the following wiring harnesses for open or short. (Continuity inspection)

Fig 1: Identifying KS And PCM Connector Terminals

G05981154

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.

KS No. 1 terminal A and PCM terminal 2U
KS No. 1 terminal B and PCM terminal 2V
KS No. 2 terminal A and PCM terminal 2AC
KS No. 2 terminal B and PCM terminal 2Y

Short circuit

If there is continuity in the following wiring harnesses, there is a short circuit. Repair or replace the wiring harness.

KS No. 1 terminal A and body ground
KS No. 1 terminal A and power supply
KS No. 1 terminal B and body ground
KS No. 1 terminal B and power supply
KS No. 2 terminal A and body ground
KS No. 2 terminal A and power supply
KS No. 2 terminal B and body ground
KS No. 2 terminal B and power supply