B2202

UNIFIED METER AND A/C AMP


DTC [B2202] Meter Communication Circuit

Symptom: Displays "METER COMM CIRC [B2202]" as a self-diagnosis results of unified meter and A/C amp.
1.CHECK CONNECTOR
Check combination meter, unified meter and A/C amp. and terminals (combination meter side, unified meter and A/C amp. side, and harness side) for looseness or bent.
OK or NG
OK - GO TO 2.
NG - Repair terminal or connector.
2.CHECK CONTINUITY COMMUNICATION CIRCUIT (TX: UNIFIED METER AND A/C AMP.)
1. Turn ignition switch OFF.
2. Disconnect combination meter connector and unified meter and A/C amp. connector.





3. Check continuity between combination meter harness connector
(A) and unified meter and A/C amp. harness connector (B).





4. Check continuity between combination meter harness connector
(A) and ground.





OK or NG
OK - GO TO 3.
NG - Repair harness or connector.
3.CHECK CONTINUITY COMMUNICATION CIRCUIT (RX: UNIFIED METER AND A/C AMP.)





1. Check continuity between combination meter harness connector
(A) and unified meter and A/C amp. harness connector (B).





2. Check continuity between combination meter harness connector
(A) and ground.





OK or NG
OK - GO TO 4.
NG - Repair harness or connector.
4.CHECK COMBINATION METER OUTPUT VOLTAGE (TX: UNIFIED METER AND A/C AMP.)
1. Connect combination meter connector.
2. Turn ignition switch ON.





3. Check voltage between combination meter harness connector and ground.





OK or NG
OK - GO TO 5.
NG - Replace combination meter.
5.CHECK COMMUNICATION SIGNAL (TX: UNIFIED METER AND A/C AMP.)
1. Turn ignition switch OFF.
2. Connect unified meter and A/C amp. connector.
3. Turn ignition switch ON.





4. Check voltage signal between combination meter harness connector and ground.





OK or NG
OK - GO TO 6.
NG - Replace unified meter and A/C amp.
6.CHECK UNIFIED METER AND A/C AMP OUTPUT VOLTAGE (RX: UNIFIED METER AND A/C AMP.)
1. Turn ignition switch OFF.
2. Disconnect combination meter connector.
3. Turn ignition switch ON.





4. Check voltage between unified meter and A/C amp. harness connector and ground.





OK or NG
OK - GO TO 7.
NG - Replace unified meter and A/C amp.
7.CHECK COMMUNICATION SIGNAL (RX: UNIFIED METER AND A/C AMP.)
1. Turn ignition switch OFF.
2. Connect combination meter connector.
3. Turn ignition switch ON.





4. Check voltage signal between unified meter and A/C amp. harness connector and ground.





OK or NG
OK - Replace unified meter and A/C amp.
NG - Replace combination meter.