Component Signal
"Signal" From Stoplight Switch (Test Connections):
TEST 1
Do stoplights operate when brake pedal is depressed?
YES -- Go to Test 2.
NO -- Check stoplights.
TEST 2
Is Powertrain Control Module (PCM) terminal 2 voltage OK with PCM connector disconnected?
Voltage:
- Brake pedal depressed: Battery positive voltage
- Brake pedal Released: Approx. 0 Volts
YES -- Replace PCM.
NO -- Repair wiring harness (Stoplight switch terminal [LG] to PCM terminal 2)