B2276

THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): B2276: ACCR Signal Circuit Malfunction
B2276 - ACCR Signal Circuit Malfunction

DESCRIPTION

The main body ECU (instrument panel junction block) will set this DTC if the ACCR signal sent from the ECM is ON for 40 seconds or more.

HINT
When the main body ECU (instrument panel junction block) is replaced with a new one and the cable from the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

After the main body ECU (instrument panel junction block) is replaced, perform the registration procedures for the engine immobiliser system Engine Immobiliser System (W/ Smart Key System).

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC OUTPUT

(a) Clear the DTCs Smart Key System (for Start Function).

(b) After all DTCs are cleared, check if the trouble occurs again 50 seconds after the engine switch is turned on (IG).

(c) Check for DTCs again.

OK:

No DTC B2276 is output.

NG -- CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK) - ECM)

OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

2. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK) - ECM)

(a) Disconnect the E52 ECU connector.

(b) Disconnect the A50 ECM connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK) - ECM)
OK -- Continue to next step.

3. INSPECT MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

(a) Reconnect the E52 connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

HINT
*1: Voltage is output only when the engine is cranking.

NG -- REPLACE ECM Removal

OK -- REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)