FixVault

DTC Detection Logic

DTC CONSULT display description DTC Detection Condition Possible causes
B2099 IGN RELAY OFF The ignition relay OFF is detected for 1 second at ignition switch ON (CPU monitors the status at the contact and excitation coil circuits of the ignition relay inside it) Ignition relay malfunction
NOTE: When IPDM E/R power supply voltage is low (Approx. 7 - 8 V for about 1 second), the "DTC: B2099" may be detected.