DESCRIPTION |
DTC Code | DTC Detection Condition |
Trouble Area | | B1532 |
When either condition below is met:
- Video signal (digital) is lost.
- The stereo component tuner assembly is not connected while the ignition switch is ON or ACC.
- Communication between the navigation receiver assembly and the stereo
component tuner assembly is not possible when the engine is started.
|
- No. 1 navigation wire
- Stereo component tuner assembly
- Navigation receiver assembly
- Harness or connector
| | B156C | WIRING DIAGRAM
 CAUTION / NOTICE / HINT
NOTICE: After
replacing the stereo component tuner assembly of vehicles subscribed to
pay-type satellite radio broadcasts, XM radio ID registration is
necessary. PROCEDURE
(a) Clear the DTCs (See page
 ). (b) Check for DTCs (See page
). OK: No DTCs are output.
| OK |
 | USE SIMULATION METHOD TO CHECK |
|
NG |
 | |
| 2. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - STEREO COMPONENT TUNER ASSEMBLY) |
(a) Disconnect the K1 and L1 navigation receiver assembly connectors. (b) Disconnect the K2 and L3 stereo component tuner assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
K1-1 (USV4) - K2-1 (USV4) |
Always | Below 1 Ω | |
K1-2 (US4-) - K2-2 (US4-) |
Always | Below 1 Ω | |
K1-3 (US4+) - K2-3 (US4+) |
Always | Below 1 Ω | |
K1-4 (UGD4) - K2-4 (UGD4) |
Always | Below 1 Ω | |
K1-5 (USG4) - K2-5 (USG4) |
Always | Below 1 Ω | |
L1-4 (+B2) - L3-4 (+B) |
Always | Below 1 Ω | |
L1-3 (ACC2) - L3-3 (ACC2) |
Always | Below 1 Ω | |
L1-8 (GND2) - L3-8 (GND2) |
Always | Below 1 Ω | |
K1-1 (USV4) - Body ground |
Always | 10 kΩ or higher | |
K1-2 (US4-) - Body ground |
Always | 10 kΩ or higher | |
K1-3 (US4+) - Body ground |
Always | 10 kΩ or higher | |
K1-4 (UGD4) - Body ground |
Always | 10 kΩ or higher | |
K1-5 (USG4) - Body ground |
Always | 10 kΩ or higher | |
L1-4 (+B2) - Body ground |
Always | 10 kΩ or higher | |
L1-3 (ACC2) - Body ground |
Always | 10 kΩ or higher | |
L1-8 (GND2) - Body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 3. |
CHECK NO. 1 NAVIGATION WIRE | (a) Replace the No. 1 navigation wire with a known good one.
for Column Shift Type: See page for Floor Shift Type: See page
(b) Clear the DTCs (See page
). (c) Check for DTCs (See page
). OK: No DTCs are output.
| OK |
| END (NO. 1 NAVIGATION WIRE IS DEFECTIVE) |
|
NG | |
| |
| 4. |
CHECK STEREO COMPONENT TUNER ASSEMBLY |
(a) Replace the stereo component tuner assembly with a known good one.
for Column Shift Type: See page for Floor Shift Type: See page
(b) Clear the DTCs (See page
). (c) Check for DTCs (See page
). OK: No DTCs are output. Result |
Result | Proceed to | |
OK | A | |
NG (for Column Shift Type) |
B | | NG (for Floor Shift Type) |
C |
| A |
| END (STEREO COMPONENT TUNER ASSEMBLY IS DEFECTIVE) |
| B |
| REPLACE NAVIGATION RECEIVER ASSEMBLY |
| C |
| REPLACE NAVIGATION RECEIVER ASSEMBLY | | 
