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DTC B1317/B1318 [ADVANCED KEYLESS SYSTEM]

id0902e2860300

DTC | B1317 | Keyless control module power supply voltage increases (16.1 V or more)
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B1318 | Keyless control module power supply voltage decreases (less than 9 V)
DETECTION CONDITION | • When the keyless control module power supply voltage is not within 9-16 V.
POSSIBLE CAUSE | • Open or short circuit in wiring harness between battery and keyless control module • Battery malfunction • Keyless control module malfunction

Diagnostic procedure

Step | Inspection | Action
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1 | INSPECT FUSE • Remove the ROOM 15 A fuse. • Is the fuse normal? | Yes | Go to the next step.
No | Replace the fuse.
2 | INSPECT BATTERY • Measure the battery positive voltage. • Is the voltage 9 V-16 V? | Yes | Go to the next step.
No | The battery has a malfunction. Inspect the charge/discharge system.
3 | INSPECT WIRING HARNESS BETWEEN BATTERY AND BCM • Measure the BCM terminal 3J voltage. • Is the voltage 9 V-16 V? | Yes | Install the fuse, then go to the next step.
No | Repair the wiring harness between the BCM and battery.
4 | INSPECT BCM • Measure the voltage at the BCM terminal 6H. • Is the voltage 9 V-16 V? | Yes | Go to the next step.
No | Replace the BCM. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.)
5 | INSPECT WIRING HARNESS BETWEEN PJB AND SAS CONTROL MODULE • Turn the ignition switch to the ON position. • Measure the keyless control module terminal 2D voltage. • Is the voltage 9 V-16 V? | Yes | Replace the keyless control module and perform the resetting procedure for the advanced keyless system when replacing the keyless control module. (See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION [WITH ADVANCED KEYLESS SYSTEM].) (See CARD KEY ID CODE REGISTRATION [WITH ADVANCED KEYLESS SYSTEM]) (See STEERING LOCK UNIT ID CODE REGISTRATION [WITH ADVANCED KEYLESS SYSTEM]) (See KEYLESS CONTROL MODULE CONFIGURATION [WITH ADVANCED KEYLESS SYSTEM]) (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [WITH ADVANCED KEYLESS SYSTEM]) (See SECURITY ACCESS PROCEDURE)
No | Repair the wiring harness between the BCM and keyless control module.