5-31
BF135A•BF150A
3. CKP sensor power line open circuit check
-1. Turn the ignition switch ON and measure the voltage
between the No. 1 (Yellow/Black) terminal of the CKP
sensor harness side 3P connector and the engine
ground.
Is there the battery voltage?
YES –
Repair open in the CKP sensor ground line.
NO –
Repair open in the wire between the No. 4
fuse and the CKP sensor.
4. CKP sensor signal line open circuit check
-1. Turn the ignition switch ON and measure the voltage
between the No. 3 (Blue) terminal of the CKP sensor
harness side 3P connector and the engine ground.
Is the measured voltage 4.75 – 5.25V?
YES –
Perform “5. CKP sensor signal line short cir-
cuit check”.
NO –
Repair open in the wire between the CKP
sensor and the ECM.
5. CKP sensor signal line short circuit check
-1. Turn the ignition switch OFF.
Check for continuity
between the No. 3 (Blue) terminal of the CKP sensor
harness side 3P connector and the engine ground.
Is there the continuity?
YES –
Perform “6. CKP sensor ground line short cir-
cuit check”.
NO –
Repair open in the wire between the CKP
sensor and the ECM.
6. CKP sensor ground line open circuit check
-1. Turn the ignition switch OFF.
Check for continuity
between the No. 2 (Green/Black) terminal of the CKP
sensor harness side 3P connector and the engine
ground.
Is there the continuity?
YES –
Perform “7. CKP sensor check”.
NO –
Repair open in the wire between the CKP
sensor and the ECM.
CKP SENSOR HARNESS
SIDE 3P CONNECTOR
IGP
(YELLOW/BLACK)
VIEWED FROM THE
TERMINAL SIDE
CKP SENSOR HARNESS
SIDE 3P CONNECTOR
CRK (BLUE)
VIEWED FROM THE
TERMINAL SIDE
CKP SENSOR HARNESS
SIDE 3P CONNECTOR
CRK (Bu)
VIEWED FROM THE
TERMINAL SIDE
CKP SENSOR HARNESS
SIDE 3P CONNECTOR
LG1 (GREEN/BLACK)
VIEWED FROM THE
TERMINAL SIDE