PINPOINT TEST B : NAVIGATION SYSTEM DOES NOT OPERATE CORRECTLY |
TEST CONDITIONS | DETAILS/RESULTS/ACTIONS |
B1: CHECK THE VSS SIGNAL TO THE NAVIGATION SYSTEM DISPLAY MODULE (WH/BU) |
| 1 Disconnect Navigation System Display Module. |
| 2 Ignition switch in position II. |
| 3 Measure the voltage between the navigation system display module pin 1, (WH/BU), harness side and ground. |
| 4 Drive the vehicle for several miles at various speeds. |
| Is the voltage between 5 - 16 volts while the vehicle is being driven? Yes No Vehicles with 2.0L or 2.3L engine, GO to B2. .Vehicles with 2.8L engine with manual transaxle, GO to B3. .Vehicles with 2.8L engine with automatic transaxle, GO to B4. .Vehicles with diesel engine with manual transaxle, GO to B5. .Vehicles with diesel engine with automatic transaxle, GO to B6. . |
B2: CHECK THE POWERTRAIN CONTROL MODULE (PCM) (VT) TO THE NAVIGATION SYSTEM DISPLAY MODULE (WH/BU) FOR OPEN |
| 1 Disconnect PCM C53. |
| 2 Measure the resistance between the navigation system display module pin 1, (WH/BU), harness side and the PCM C53 pin 58, (WH/BU), harness side. |
| Is the resistance less than 5 ohms? Yes REFER to WDS. No REPAIR the circuit(s). TEST the system for normal operation. |
B3: CHECK THE PCM (VT) TO THE NAVIGATION SYSTEM DISPLAY MODULE (WH/BU) FOR OPEN |
| 1 Disconnect PCM C51b. |
| 2 Measure the resistance between the navigation system display module pin 1, (WH/BU), harness side and the PCM C51b pin 54, (VT), harness side. |
| Is the resistance less than 5 ohms? Yes REFER to WDS. No REPAIR the circuit(s). TEST the system for normal operation. |
B4: CHECK THE AUDIO UNIT (VT) TO THE NAVIGATION SYSTEM DISPLAY MODULE (WH/BU) FOR OPEN |
| 1 Disconnect Audio unit C413. |
| 2 Measure the resistance between the navigation system display module pin 1, (WH/BU), harness side and the audio unit C413 pin 6, (VT), harness side. |
| Is the resistance less than 5 ohms? Yes REFER to WDS. No REPAIR the circuit(s). TEST the system for normal operation. |
B5: CHECK THE PCM (VT) TO THE NAVIGATION SYSTEM DISPLAY MODULE (WH/BU) FOR OPEN |
| 1 Disconnect PCM C52b. |
| 2 Measure the resistance between the navigation system display module pin 1, (WH/BU), harness side and the PCM C52b pin 20, (VT), harness side. |
| Is the resistance less than 5 ohms? Yes REFER to WDS. No REPAIR the circuit(s). TEST the system for normal operation. |
B6: CHECK THE AUDIO UNIT (VT) TO THE NAVIGATION SYSTEM DISPLAY MODULE (WH/BU) FOR OPEN |
| 1 Disconnect Audio Unit C413. |
| 2 Measure the resistance between the navigation system display module pin 1, (WH/BU), harness side and the audio unit C413 pin 6, (VT), harness side. |
| Is the resistance less than 5 ohms? Yes REFER to WDS. No REPAIR the circuit(s). TEST the system for normal operation. |
B7: CHECK THE REVERSE LAMP SIGNAL TO THE NAVIGATION SYSTEM DISPLAY MODULE (VT/BN) |
| 1 Disconnect Navigation System Display Module. |
| 2 Ignition switch in position II. |
| 3 Select reverse gear. |
| 4 Measure the voltage between the navigation system display module pin 2, (VT/BN), harness side and ground. |
| Is the voltage greater than 10 volts? Yes INSTALL a new navigation system display module. TEST the system for normal operation. No For vehicles with automatic transaxle, GO to B8. . For vehicles with 5 speed manual transaxle, GO to B9. . For vehicles with 6 speed manual transaxle, GO to B10. . |
B8: CHECK THE REVERSING LAMP (BK/BU) TO THE NAVIGATION SYSTEM DISPLAY MODULE (VT/BN) FOR OPEN |
| 1 Disconnect CJB C17. |
| 2 Measure the resistance between the navigation system display module pin 2, (VT/BN), harness side and the CJB C17 pin 4, (BK/BU), harness side. |
| Is the resistance less than 5 ohms? Yes No REPAIR the circuit(s). TEST the system for normal operation. |
B9: CHECK THE REVERSING LAMP (GN/WH) TO THE NAVIGATION SYSTEM DISPLAY MODULE (VT/BN) FOR OPEN |
| 1 Disconnect Reversing Lamp Switch C151. |
| 2 Measure the resistance between the navigation system display module pin 2, (VT/BN), harness side and the reversing lamp switch C151 pin 2, (GN/WH), harness side. |
| Is the resistance less than 5 ohms? Yes No REPAIR the circuit(s). TEST the system for normal operation. |
B10: CHECK THE REVERSING LAMP (BK/BU) TO THE NAVIGATION SYSTEM DISPLAY MODULE (VT/BN) FOR OPEN |
| 1 Disconnect Reversing Lamp Switch C151. |
| 2 Measure the resistance between the navigation system display module pin 2, (VT/BN), harness side and the reversing lamp switch C151 pin 2, (BK/BU), harness side. |
| Is the resistance less than 5 ohms? Yes No REPAIR the circuit(s). TEST the system for normal operation. |