DTC B1317/B1318 [POWER RETRACTABLE HARDTOP]

id0902j2350700

DTC | B1317 | Battery power supply voltage increases (17.5 V or more)
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B1318 | Battery power supply voltage decreases (less than 7.5 V)
DETECTION CONDITION | • If the power retractable hardtop control module power supply voltage is not within 7.5—17.5 V. Note • The system recovery condition after detecting DTC B1317/1318 is that the battery voltage is in the 8.5—16.5 V range. Verify that the battery voltage is 8.5—16.5 V when inspecting.
POSSIBLE CAUSE | • ROOM 15 A fuse malfunction • Battery malfunction • Open or short circuit in wiring harness between battery and power retractable hardtop control module • Power retractable hardtop control module malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | INSPECT THE FUSE • Remove the ROOM 15 A fuse. • Is the fuse normal? | Yes | Go to the next step.
No | Replace the fuse.
2 | INSPECT THE BATTERY • Measure the battery positive voltage. • Is the voltage 8.5 V—16.5 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 POWER RETRACTABLE HARDTOP CONTROL MODULE • Turn the ignition switch to the ON position. • Measure the power retractable hardtop control module terminal 1X voltage. • Is the voltage 8.5 V—16.5 V? | Yes | Replace the power retractable hardtop control module. (See POWER RETRACTABLE HARDTOP CONTROL MODULE REMOVAL/INSTALLATION.)
No | DTC troubleshooting completed.