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[142A] [142B] [30B] [30A] LGN/BN LGN/BN BN/GY BN/GY BN/GY BK/GN BK/GN BK/GN C B A C B A 1 12 11 1 12 11 Security Siren (Optional) TSM/TSSM/HFSM To Battery Fuse 15A em00632 Figure 5-35. Smart Siren Circuit DTC B1131 TOOL NAME PART NUMBER HARNESS CONNECTOR TEST KIT HD-41404-C BREAKOUT BOX HD-42682 Table 5-42. DTC B1131 Diagnostic Faults POSSIBLE CAUSES Short to ground in alarm signal Open ground circuit Open power circuit TSSM/HFSM malfunction Open alarm signal Siren malfunction 1. Siren Verification Test 1. Disarm the security system. 2. Inspect the vehicle for a security siren. 3. Is a security siren present? a. Yes. b. No. 2. Alarm Signal Short to Ground Test 1. Connect BREAKOUT BOX (Part No. HD-42682) to wire 2. Using a multimeter, test for continuity between breakout 3. Is continuity present? a. Yes. Repair short to ground in (LGN/BN) wire b. No. Replace the TSSM/HFSM. See the service 3. Battery Circuit Test 1. Remove the security siren. 2. With IGN ON, and the engine stop switch in the RUN 3. Is battery voltage present? a. Yes. b. No. 4. Power Supply and Ground Test 1. Test for battery voltage between [142B] terminal A and 2. Is battery voltage present? a. Yes. Repair open in (BK/GN) ground wire between b. No. Repair open in (BN/GY) wire. 5. Alarm Signal Circuit Open Test 1. Connect BREAKOUT BOX (Part No. HD-42682) to wire 2. Using a multimeter, test for continuity between [142B] 3. Is continuity present? a. Yes. b. No. Repair open in (LGN/BN) wire between [142B] 6. Alarm Signal Short to Ground Test 1. Test for continuity between breakout box terminals 11 and 2. Is continuity present? a. Yes. Repair short to ground in (LGN/BN) wire. b. No. 5-64 2011 Touring Diagnostics: Accessories, Horn, Lighting and Security |