DTC B2271 IGN Relay Control Circuit
DTC DETECTING CONDITION:
- When malfunction is detected in IG1 and IG2 drive circuits in the Keyless Access Control Module.
- When malfunction is detected in IG hold circuit in the Keyless Access Control Module.
TROUBLE SYMPTOM:
Not all functions operate at IGN ON.
CAUTION:
For replacement procedure of Keyless Access Control Module, refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume.
WIRING DIAGRAM:
Push button start system <Ref. to WIRING DIAGRAM , Push Button Start System.>
- Engine type: FA
- Engine type: EJ
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK LAN SYSTEM. Inspect LAN system. <Ref. to PROCEDURE , Basic Diagnostic Procedure.> |
Is the check result OK? | Go to step 2 . | Perform the inspection according to the diagnosis for LAN system. |
| 2 CHECK FUSE. Check the fuse. <Ref. to Relay and Fuse .> |
Is the check result OK? | Go to step 3 . | Replace the fuse. When the replaced fuse is blown immediately, check the power supply circuit for short-circuited. |
3 CHECK HARNESS.
Connector & terminal (B572) No. 2 (+) - Chassis ground (-): |
Is the voltage 9.5 - 16 V? | Go to step 4 . | Check the power supply circuit. |
| 4 CHECK HARNESS (OPEN CIRCUIT). Using a tester, measure the resistance between the Keyless Access Control Module connector and chassis ground. Connector & terminal (B572) No. 11 - Chassis ground: |
Is the resistance less than 1 Ω? | Go to step 5 . | Repair or replace the open circuit of harness. |
5 CHECK HARNESS.
Connector & terminal (B572) No. 9 - Chassis ground: |
Is resistance 74.15 - 460.88 Ω? (20°C) | Go to step 6 . | Check IG relay 2. Go to step 7 . |
6 CHECK HARNESS.
Connector & terminal (B574) No. 6 - Chassis ground: |
Is resistance 50.87 - 72.17 Ω? (20°C) | Go to step 8 . | Check IG relay 1. Go to step 7 . |
| 7 CHECK RELAY. Perform unit inspection of IG relay 1 and IG relay 2. <Ref. to CHECK RELAY , INSPECTION, Relay and Fuse.> |
Is the check result OK? | Go to step 8 . | Replace the relay. <Ref. to REMOVAL , IG Relay1 (Push Button Start).> <Ref. to REMOVAL , IG Relay2 (Push Button Start).> |
8 CHECK Keyless Access Control Module.
Connector & terminal (B574) No. 6 (+) - Chassis ground (-): (B572) No. 9 (+) - Chassis ground (-): |
Is the voltage 1 V or less → 9.5 - 16 V when ACC → IGN ON? | Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.
NOTE:
In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
|
Replace the Keyless Access Control Module. <Ref. to REMOVAL , Keyless Access Control Module.> |