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Home >> Jeep >> 2003 >> TJ (CANADA) L4-2.4L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Component Tests and General Diagnostics >> Brake Switch Sense Status Does Not Change on DRB
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Brake Switch Sense Status Does Not Change on DRB

Test 1 - 3:




Test 4 - 8:




Test 9:






SYMPTOM
BRAKE SWITCH SENSE STATUS DOES NOT CHANGE ON DRB III

POSSIBLE CAUSES
- DRBIII does not show break SW pressed or released
- (F32) fused B+ circuit open
- (Z1) ground circuit open
- (V37) brake lamp switch signal circuit
- (V37) brake lamp switch signal circuit open
- (V37) brake lamp switch signal circuit short to ground
- (V37) brake lamp switch signal less than 10.0 volts
- (V32) S/C power supply circuit below 10 volts at brake switch conn
- PCM

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