Diagnostic Trouble Code Chart
WARNING: This page is about a different car, the 2011 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
NAVIGATION SYSTEM
| DTC Code | Detection Item | Trouble Area | Refer to |
|---|---|---|---|
| B156A | Gateway ECU Disconnected | 1. Network gateway ECU power source circuit 2. AVC-LAN circuit between display and navigation module display and network gateway ECU 3. Network gateway ECU 4. Display and navigation module display |
Refer to DTC B1590: No Response from Gateway ECU; DTC B156A: Gateway ECU Disconnected |
| B156B | Multi-media Interface ECU Disconnected | 1. Multi-media interface ECU power source circuit 2. AVC-LAN circuit between display and navigation module display and multi-media interface ECU 3. Multi-media interface ECU 4. Display and navigation module display |
Refer to DTC B156E: No Response from Multi-media Interface ECU; DTC B156B: Multi-media Interface ECU Disconnected |
| B156E | No Response from Multi-media Interface ECU | 1. Multi-media interface ECU power source circuit 2. AVC-LAN circuit between display and navigation module display and multi-media interface ECU 3. Multi-media interface ECU 4. Display and navigation module display |
Refer to DTC B156E: No Response from Multi-media Interface ECU; DTC B156B: Multi-media Interface ECU Disconnected |
| B1590 | No Response from Gateway ECU | 1. Network gateway ECU power source circuit 2. AVC-LAN circuit between display and navigation module display and network gateway ECU 3. Network gateway ECU 4. Display and navigation module display |
Refer to DTC B1590: No Response from Gateway ECU; DTC B156A: Gateway ECU Disconnected |
| B1591 | No Response from Audio HU | 1. Radio receiver assembly power source circuit 2. MOST circuit between display and navigation module display and radio receiver assembly 3. MOST circuit between radio receiver assembly and stereo component amplifier assembly 4. Radio receiver assembly 5. Display and navigation module display |
Refer to DTC B1591: No Response from Audio HU; DTC B15D1: Audio HU Disconnected |
| B1593 | No Response from Stereo Component Amplifier | 1. Stereo component amplifier assembly power source circuit 2. MOST circuit between radio receiver assembly and stereo component amplifier assembly 3. MOST circuit between stereo component amplifier assembly and display and navigation module display 4. Stereo component amplifier assembly 5. Display and navigation module display |
Refer to DTC B1593: No Response from Stereo Component Amplifier; DTC B15D3: Stereo Component Amplifier Disconnected |
| B15A0 | LAN Master Malfunction | Display and navigation module display | Refer to DTC B15A0: LAN Master Malfunction; DTC B15AD: Navigation Processor Malfunction |
| B15AD | Navigation Processor Malfunction | Display and navigation module display | Refer to DTC B15A0: LAN Master Malfunction; DTC B15AD: Navigation Processor Malfunction |
| B15B0 | Display Screen Malfunction | Display and navigation module display | Refer to DTC B15B0: Display Screen Malfunction |
| B15B8 | Harddisk Malfunction | Hard disk drive | Refer to DTC B15B8: Harddisk Malfunction |
| B15C0 | Short in GPS Antenna | 1. Wire harness 2. Navigation antenna assembly 3. Display and navigation module display |
Refer to DTC B15C0: Short in GPS Antenna; DTC B15C1: Open in GPS Antenna |
| B15C1 | Open in GPS Antenna | 1. Wire harness 2. Navigation antenna assembly 3. Display and navigation module display |
Refer to DTC B15C0: Short in GPS Antenna; DTC B15C1: Open in GPS Antenna |
| B15C2 | Speed Signal Malfunction | 1. Wire harness or connector 2. Combination meter assembly 3. Display and navigation module display |
Refer to DTC B15C2: Speed Signal Malfunction |
| B15D0 | MOST Communication Malfunction | 1. Speaker circuit (w/ front center speaker) 2. MOST line check 3. MOST communication line connector 4. MOST communication line 5. Radio receiver assembly 6. Stereo component amplifier assembly 7. Display and navigation module display |
Refer to DTC B15D0: MOST Communication Malfunction |
| B15D1 | Audio HU Disconnected | 1. Radio receiver assembly power source circuit 2. MOST circuit between display and navigation module display and radio receiver assembly 3. MOST circuit between radio receiver assembly and stereo component amplifier assembly 4. Radio receiver assembly 5. Display and navigation module display |
Refer to DTC B1591: No Response from Audio HU; DTC B15D1: Audio HU Disconnected |
| B15D3 | Stereo Component Amplifier Disconnected | 1. Stereo component amplifier assembly power source circuit 2. MOST circuit between radio receiver assembly and stereo component amplifier assembly 3. MOST circuit between stereo component amplifier assembly and display and navigation module display 4. Stereo component amplifier assembly 5. Display and navigation module display |
Refer to DTC B1593: No Response from Stereo Component Amplifier; DTC B15D3: Stereo Component Amplifier Disconnected |
| B15E7 | Harddisk Reading/Writing Malfunction(Low Temperature) | Hard disk drive | Refer to DTC B15E7: Harddisk Reading/Writing Malfunction(Low Temperature); DTC B15E8: Harddisk Reading/Writing Malfunction(High Temperature) |
| B15E8 | Harddisk Reading/Writing Malfunction(High Temperature) | Hard disk drive | Refer to DTC B15E7: Harddisk Reading/Writing Malfunction(Low Temperature); DTC B15E8: Harddisk Reading/Writing Malfunction(High Temperature) |
| U0073 | Control Module Communication Bus Off | CAN communication system | Refer to DTC U0073: Control Module Communication Bus Off; DTC U1110: Lost Communication with Clearance Warning ECU |
| U1110 | Lost Communication with Clearance Warning ECU | CAN communication system | Refer to DTC U0073: Control Module Communication Bus Off; DTC U1110: Lost Communication with Clearance Warning ECU |