B1784
B1784-STOP LAMP CONTROL CIRCUIT LOWB1784 - Stop Lamp Control Circuit Low:
WHEN MONITORED
With the Stop Lamps activated.
SET CONDITION
When the TIPM detects a LOW condition.
POSSIBLE CAUSES
- (L55) Stop lamp control circuit shorted to ground
- Totally integrated power module
Diagnostic Test
1. INTERMITTENT CONDITION
Turn the ignition on.
With the Scan Tool, clear all TIPM DTC's.
Turn the Stop Lamps on.
With the Scan Tool read the DTC information.
Q: Does the Scan Tool read: B1784-STOP LAMP CONTROL CIRCUIT LOW?
YES: Go To 2
NO: The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
2. (L55) STOP LAMP CONTROL CIRCUIT SHORTED TO GROUND
Turn the ignition off.
Disconnect the TIPM C3 connector.
Disconnect the Left and Right Rear Tail Lamp harness connectors.
Measure the resistance between ground and the (L55) Stop Lamp Control circuit.
Q: Is the resistance below 5.0 ohms?
YES: Repair the (L55) Stop Lamp Control circuit for a short to ground. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Replace the Totally Integrated Power Module (TIPM). Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test