B22B7

POWER SOURCE / WIRING: ELECTRIC POWER CONTROL SYSTEM: B22B6-B22B8, B22BA, B22BC, B22BD: Communication Error with ECM / PCM "A" (Generate Voltage Data of Alternator)

B22B6 - Communication Error with ECM / PCM "A" (Generate Voltage Data of Alternator)
B22B7 - Communication Error with ECM / PCM "A" (Generate Rate Data of Alternator)
B22B8 - Communication Error with ECM / PCM "A" (Charge Mode Data)
B22BA - Communication Error with ECM / PCM "A" (Engine Speed Data)
B22BC - Communication Error with ECM / PCM "A" (Intake-Air Temperature Data)
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 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 Removal

OK -- END