These symptoms DO NOT trigger Diagnostic Trouble Codes (DTCs) or cause the indicator light to blink. If the Malfunction Indicator Lamp (MIL) was reported ON or the indicator light has been blinking, check for DTCs. But if the vehicle has one of the symptoms in the following chart, check the probable cause(s) for it, in the sequence listed, until you find the problem.

Symptom	Probable cause(s)	Notes
When you turn the ignition switch ON (II), the indicator light comes on and stays on or never comes on at all	Communication line between multiplex control unit and gauge assembly defective Blown indicator light bulb	Check that the MIL indicates code for communication line between the multiplex control unit and the gauge assembly, refer to the'01 Civic Shop Manual on this CD (see page 22-273). If the MIL does not indicate code, replace the indicator light bulb, refer to the'01 Civic Shop Manual on this CD (see page 22-87).
, or indicator light does not indicate while the shift lever is in that position
Shift lever cannot be moved from position while you are pushing on the brake pedal	A problem in the shift lock system (interlock system)	Check the interlock system-shift lock system circuit: KE, KG, KE and KY models, refer to the'01 Civic Shop Manual on this CD (see page 14-101). KS model (see page 14-72).
Ignition key cannot be moved from ACC (I) position to LOCK (0) position when you are pushing it with the shift lever in position	A problem in the key interlock system (interlock system)	Check the interlock system-key interlock system circuit, refer to the'01 Civic Shop Manual on this CD (see page 14-105).
Shift lever cannot pass through position from position	A problem in the reverse lock system of interlock system	Check the interlock system-reverse lock system circuit KE, KG, KR and KY models, refer to the'01 Civic Shop Manual on this CD (see page 14-107). KS model (see page 14-66).