B22B7

POWER SOURCE / WIRING: ELECTRIC POWER CONTROL SYSTEM: B22B6: Communication Error with ECM / PCM "A" (Generate Voltage Data of Alternator)

DTC B22B6 - Communication Error with ECM / PCM "A" (Generate Voltage Data of Alternator)

DTC B22B7 - Communication Error with ECM / PCM "A" (Generate Rate Data of Alternator)

DTC B22B8 - Communication Error with ECM / PCM "A" (Charge Mode Data)

DTC B22BA - Communication Error with ECM / PCM "A" (Engine Speed Data)

DTC B22BC - Communication Error with ECM / PCM "A" (Intake-Air Temperature Data)

DTC B22BD - Communication Error with ECM / PCM "A" (Coolant Temperature Data)

DESCRIPTION

The electric power control ECU receives engine related signals from the ECM via CAN communication.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM)
(a) Check for DTCs related to the CAN communication system Diagnosis System.
OK:
DTC is not output.
NG -- GO TO CAN COMMUNICATION SYSTEM
OK -- Continue to next step.

2. CHECK FOR DTC
(a) Delete the DTC Reading and Clearing Diagnostic Trouble Codes.
(b) Check for the DTC again Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC is not output.
NG -- REPLACE ECM
OK -- END