Ignition Coil (4.0L); Crankshaft Position Sensor Inspection - Mazda B-Series 1997 Workshop Manual

ELECTRONIC IGNITION SYSTEM
Ignition coil (4.OL)
1. Position the coil on the mounting bracket.
Tightening torque:
5-7 N-m (51-71 kgf-cm, 44--62 in-lbfj
2. On vehicles equipped with AIC, reposition the air condi-
tioning tube.
Tightening torque:
2 6 - 4 2 N-m (2.6-3.1 kgf-m, 19-24 ft-lbf)
3. Connect the high-tension leads and the harness connec-
tor to the ignition coil.
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CRANKSHAFT POSITION SENSOR
Inspection
1. Connect SST (104 pin breakout box) to the PCM and
vehicle harnesses.
2. Crank the engine and measure voltage between Pin 21
and Pin 22 at breakout box.
3. Verify that the AC voltage is greater than 0.4 volt.
4. If voltage is not as specified, go to procedure 5. If voltage
is OK, crankshaft position sensor is OK.
5. Key OFF and disconnect the PCM from the breakout box.
6. Crank the engine and verify that the AC voltage is greater
than 0.4 volt between Pin 21 and Pin 22.
7. If voltage is not as specified, go to procedure 6. If voltage
is OK, replace PCM.
8. Key off and measure resistance between Pin 21 and
Pin 22 at breakout box.
Specification: 300--800Cl
9. If resistance is not as specified, check the wiring harness.
If the wiring harness is OK, replace the CKP sensor. If the
resistance is OK, go to procedure 10.
10. Check trigger wheel and CKP sensor for damage.
11. If CKP sensor and trigger wheel is OK, replace CKP
sensor. If any damage are found, repair or replace
damaged posts.
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