Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

CHECK HARNESS AND CONNECTOR (TELEVISION DISPLAY - NAVIGATION RECEIVER)

Disconnect the W2 display connector.
Disconnect the K8 receiver connector.

Measure the resistance according to the value(s) in the table below.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
K8-2 (CDR+) - W2-28 (R+)	Always	Below 1 Ω
K8-3 (CDR-) - W2-29 (R-)
K8-4 (CDL+) - W2-30 (L+)
K8-5 (CDL-) W2-31 (L-)
K8-1 (CSLD) - W2-27 (SLD9)
K8-2 (CDR+) - Body ground	Always	10 kΩ or higher
K8-3 (CDR-) - Body ground
K8-4 (CDL+) - Body ground
K8-S (CDL-) Body ground
K8-1 (CSLD) - Body ground

Fig 1: Identifying W2 And K8 Connectors Terminals

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NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step.

CHECK TELEVISION DISPLAY

Reconnect the W2 display connector.

Using an oscilloscope, check the waveform between each terminal and the body ground according to the conditions, as shown in the table below.

Waveform

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
W2-28 (R+) - Body ground	Audio sound is being produced	A waveform synchronized with sound is output
W2-29 (R-) - Body ground
W2-30 (L+) - Body ground
W2-31 (L-) - Body ground

Fig 2: Identifying W2 Connector Terminals

NG: REPLACE TELEVISION DISPLAY (see REMOVAL )

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (see PROBLEM SYMPTOMS TABLE )