B1637
B1637-RIGHT HIGH BEAM CONTROL CIRCUIT LOWB1637 - Right High Beam Control Circuit Low:
WHEN MONITORED
With the High Beam Headlamps activated.
SET CONDITION
When the TIPM detects a LOW condition.
POSSIBLE CAUSES
- (L34) Right highbeam output circuit
- Totally integrated power module
Diagnostic Test
1. INTERMITTENT CONDITION
Turn the ignition on.
With the Scan Tool, clear all TIPM DTC's.
Turn the Highbeam Headlamps on.
With the Scan Tool read the DTC information.
Q: Does the Scan Tool read: B1637-RIGHT HI BEAM 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. (L34) RIGHT HIGHBEAM OUTPUT CIRCUIT
Turn the ignition off.
Disconnect the TIPM C4 harness connector.
Disconnect the Right Highbeam Lamp harness connector.
Measure the resistance between ground and the Right Highbeam Output circuit.
Q: Is the resistance below 5.0 ohms?
YES: Repair the (L34) Right Highbeam Output circuit for a short to ground condition. 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