Honda CBR650RA Shop Manual page 160

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PGM-FI SYSTEM
3. IAT Sensor Line Open Circuit Inspection
Turn the ignition switch OFF.
Disconnect the ECM 33P (Black) and 33P (Gray)
connectors (page 4-76).
Check for continuity between the wire harness side
IAT sensor 2P (Black) connector [1] and ECM 33P
(Black) [2]/33P (Gray) [3] connector terminals.
TOOL:
Test probe
CONNECTION:
Gray/blue – Gray/blue
Green/orange – Green/orange
Is there continuity?
YES
NO
4. IAT Sensor Resistance Inspection
Connect the IAT sensor 2P (Black) connector.
Measure the resistance between the wire harness
side ECM 33P (Black) [1] and 33P (Gray) [2]
connector terminals.
TOOL:
Test probe
CONNECTION: Gray/blue – Green/orange
STANDARD: 1.0 – 1.3 kΩ (40°C/104°F)
Is the resistance within standard value?
YES
NO
P0201 (No. 1 FUEL INJECTOR)/
P0202 (No. 2 FUEL INJECTOR)/
P0203 (No. 3 FUEL INJECTOR)/
P0204 (No. 4 FUEL INJECTOR)
• Before starting the inspection, check for loose or
poor contact on the fuel injector 2P (Black) and ECM
33P (Black) connectors, and recheck the DTC.
1. Recheck DTC
Erase the DTC (page 4-9).
Start the engine and check the fuel injector with the
MCS or GST.
Is the P0201, P0202, P0203 or P0204 indicated?
YES
NO
4-56
07ZAJ-RDJA110
– GO TO STEP 4.
– • Open circuit in Gray/blue wire
• Open circuit in Green/orange wire
07ZAJ-RDJA110
– Replace the ECM with a known good one,
and recheck.
– Faulty IAT sensor
– GO TO STEP 2.
– Intermittent failure
[3]
Gr/Bu
Gr/Bu
[2]
Gr/Bu
[2]
G/O
G/O
[1]
[1]
G/O