Preliminary Tests

Ensure fuses No. 13 (7.5-amp), No. 17 (20-amp), No. 44 (20-amp) and No. 56 (7.5-amp) are okay. If fuse(s) are not okay, locate and repair cause of blown fuse. If fuse(s) are okay, go to POWER & GROUND TESTS  . If power and ground system is okay, check for Diagnostic Trouble Codes (DTCs). See RETRIEVING DIAGNOSTIC TROUBLE CODES (DTCs)  under SELF-DIAGNOSTIC MODE 1 TESTS. If no DTC is indicated, go to WAKE-UP FUNCTION TESTS  under SELF-DIAGNOSTICS.