DESCRIPTION
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
After replacing the navigation receiver assembly of vehicles subscribed to pay-type satellite radio broadcasts, registration of the XM radio ID is necessary.
PROCEDURE
1. |
CONFIRM MODEL |
(a) Choose the model to be inspected.
Model |
Proceed to |
---|---|
w/o Manual (SOS) switch |
A |
w/ Manual (SOS) switch |
B |
B | ![]() |
GO TO STEP 4 |
|
2. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)) |
(a) Disconnect the G37 navigation receiver assembly connector.
(b) Disconnect the U2 map light assembly (telephone microphone assembly) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
G37-4 (MACC) - U2-14 (MACC) |
Always |
Below 1 Ω |
G37-5 (MIN+) - U2-13 (MCO+) |
Always |
Below 1 Ω |
G37-19 (MIN-) - U2-12 (MCO-) |
Always |
Below 1 Ω |
G37-6 (SNS2) - U2-15 (SNS2) |
Always |
Below 1 Ω |
G37-4 (MACC) - Body ground |
Always |
10 kΩ or higher |
G37-5 (MIN+) - Body ground |
Always |
10 kΩ or higher |
G37-19 (MIN-) - Body ground |
Always |
10 kΩ or higher |
G37-18 (SGND) - Body ground |
Always |
10 kΩ or higher |
G37-6 (SNS2) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
INSPECT NAVIGATION RECEIVER ASSEMBLY |
(a) Reconnect the G37 navigation receiver assembly connector.
(b) Reconnect the U2 map light assembly (telephone microphone assembly) connector.
(c) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
G37-18 (SGND) - Body ground |
Always |
Below 1 Ω |
G37-19 (MIN-) - Body ground |
Always |
Below 1 Ω |
(e) Proceed to the next step based on the inspection result.
Result |
Proceed to |
---|---|
NG |
A |
OK |
B |
*a |
Component with harness connected (Navigation Receiver Assembly) |
A | ![]() |
REPLACE NAVIGATION RECEIVER ASSEMBLY |
B | ![]() |
GO TO STEP 9 |
4. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)) |
(a) Disconnect the G37 navigation receiver assembly connector.
(b) Disconnect the U2 map light assembly (telephone microphone assembly) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
G37-6 (SNS2) - U2-15 (SNS2) |
Always |
Below 1 Ω |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - DCM (TELEMATICS TRANSCEIVER)) |
(a) Disconnect the G37 navigation receiver assembly connector.
(b) Disconnect the F39 DCM (telematics transceiver) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
G37-5 (MIN+) - F39-18 (MCO+) |
Always |
Below 1 Ω |
G37-19 (MIN-) - F39-19 (MCO-) |
Always |
Below 1 Ω |
G37-5 (MIN+) - Body ground |
Always |
10 kΩ or higher |
G37-19 (MIN-) - Body ground |
Always |
10 kΩ or higher |
G37-18 (SGND) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
6. |
CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)) |
(a) Disconnect the F39 DCM (telematics transceiver) connector.
(b) Disconnect the U2 map light assembly (telephone microphone assembly) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F39-33 (MCVD) - U2-14 (MACC) |
Always |
Below 1 Ω |
F39-34 (MCI+) - U2-13 (MCO+) |
Always |
Below 1 Ω |
F39-35 (MCI-) - U2-12 (MCO-) |
Always |
Below 1 Ω |
F39-33 (MCVD) - Body ground |
Always |
10 kΩ or higher |
F39-34 (MCI+) - Body ground |
Always |
10 kΩ or higher |
F39-35 (MCI-) - Body ground |
Always |
10 kΩ or higher |
F39-32 (SGND) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
7. |
INSPECT NAVIGATION RECEIVER ASSEMBLY |
(a) Disconnect the F39 DCM (telematics transceiver) connector.
(b) Reconnect the G37 navigation receiver assembly connector. |
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
G37-18 (SGND) - Body ground |
Always |
Below 1 Ω |
G37-19 (MIN-) - Body ground |
Always |
Below 1 Ω |
*a |
Component with harness connected (Navigation Receiver Assembly) |
NG | ![]() |
REPLACE NAVIGATION RECEIVER ASSEMBLY |
|
8. |
INSPECT DCM (TELEMATICS TRANSCEIVER) |
(a) Reconnect the F39 DCM (telematics transceiver) connector.
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F39-35 (MCI-) - Body ground |
Always |
Below 1 Ω |
F39-32 (SGND) - Body ground |
Always |
Below 1 Ω |
*a |
Component with harness connected (DCM (Telematics Transceiver)) |
NG | ![]() |
REPLACE DCM (TELEMATICS TRANSCEIVER) |
|
9. |
INSPECT MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY) |
(a) Disconnect the U2 map light assembly (telephone microphone assembly) connector.
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG | ![]() |
REPLACE MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY) |
|
10. |
INSPECT MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY) |
(a) Reconnect the F39 DCM (telematics transceiver) connector.
(b) Reconnect the U2 map light assembly (telephone microphone assembly) connector. |
|
(c) Turn the ignition switch to ACC.
(d) Connect an oscilloscope to terminals 13 (MCO+) and 12 (MCO-) of the map light assembly (telephone microphone assembly) connector.
(e) Check the waveform of the telephone microphone assembly using the oscilloscope.
Result |
Proceed to |
---|---|
A waveform synchronized with the voice input to the map light assembly (telephone microphone assembly) is output |
A |
A waveform synchronized with the voice input to the map light assembly (telephone microphone assembly) is not output |
B |
*a |
Component with harness connected (Map Light Assembly (Telephone Microphone Assembly)) |
A | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
B | ![]() |
REPLACE MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY) |
Lost Communication with ECM / PCM "A" (U0100)
DESCRIPTION
DTC Code
DTC Detection Condition
Trouble Area
U0100
There is no communication from the ECM.
Power source or inside ECM
ECM main wire or connector
ECM
...
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE FRONT SUSPENSION UPPER ARM BUSH LH
HINT:
Use the same procedure for the front and rear sides.
(a) Using a hammer and chisel, strike and bend the entire flange of the
upper arm bush as shown in the illustratio ...