Honda CBR125R Owner's Manual page 111

3. MAP Sensor System Inspection 2
Turn the ignition switch OFF.
Disconnect the sensor unit 5P connector.
Connect the sensor unit 5P connector terminals
at the wire side with a jumper wire.
Connection:
Light green/yellow – Green/orange
Turn the ignition switch ON (and engine stop
switch " ": CM and U type).
Check the MAP sensor with the HDS pocket
tester.
Is about 0 V indicated?
YES – Faulty sensor unit (MAP sensor)
NO – GO TO STEP 4.
4. MAP Sensor Output Line Open Circuit Inspec-
tion
Turn the ignition switch OFF.
Remove the jumper wire.
Disconnect the ECM 33P connector.
Check for continuity at the Light green/yellow
wire between the sensor unit 5P and ECM 33P
connectors.
Connection:
27 (Light green/yellow) – Light green/yellow
TOOL:
Test probe
Is there continuity?
YES – Replace the ECM with a known good
one, and recheck.
NO – Open circuit in Light green/yellow wire
DTC 7-1 (ECT SENSOR LOW
VOLTAGE)
1. ECT Sensor System Inspection
Turn the ignition switch ON (and engine stop
switch " ": CM and U type).
Check the ECT sensor with the HDS pocket
tester.
Is about 0 V indicated?
YES – GO TO STEP 2.
NO – Intermittent failure
2. ECT Sensor Inspection
Turn the ignition switch OFF.
Disconnect the ECT sensor 3P connector.
Turn the ignition switch ON (and engine stop
switch " ": CM and U type).
Check the ECT sensor with the HDS pocket
tester.
Is about 0 V indicated?
YES – GO TO STEP 4.
NO – GO TO STEP 3.
SENSOR UNIT 5P CONNECTOR
(Wire side/female terminals)
SENSOR UNIT 5P CONNECTOR
(Wire side/female terminal)
07ZAJ-RDJA110
ECM 33P CONNECTOR
(Wire side/female terminal)
FUEL SYSTEM (PGM-FI)
JUMPER WIRE
G/O
Lg/Y
Lg/Y
(27)
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