|
No.
|
TECH 1 Display
|
Conditions for
Checking
|
Nominal Value
|
Trouble Codes
|
Terminal
|
|
|
44
|
RADIO TER. MRQ
|
Ignition ON
|
|
121
|
10/2
|
|
|
|
|
Radio OFF
|
HIGH 5V
|
|
26-pin
|
|
|
|
|
Radio ON
|
HIGH 5V
|
|
|
|
|
|
|
During program search, brief
change to:
|
LOW 0V
|
|
|
|
|
Note: Carry
out F5:ACTUATOR TEST, RADIO BUS TEST,
see table 5. Radio bus faults are specified more closely in this test.
|
|
|
|
Notes for Trouble-shooting:
|
Nominal Value:
|
Cause of Fault:
(If nominal value is not attained)
|
|
|
· Ignition OFF
|
|
|
|
|
· Remove radio H1
|
|
|
|
|
· Ignition ON:
|
HIGH 5V
|
|
|
|
· Measure voltage between radio wiring
harness plug Ter. 18 and ground:
|
between 4.5 and 5.5 volts
|
· Lead from radio wiring harness plug
Ter. 18 to MID Ter. 10 has short circuit to ground, is interrupted
or has short circuit to + battery voltage
|
|
|
|
|
· MID defective
|
|
|
· Ignition OFF and remove instrument
assembly
|
|
|
|
|
· Release and disconnect 26-pin MID
wiring harness plug
|
|
|
|
|
· Using multimeter, at MID wiring harness
plug Ter. 10:
measure
voltage to ground:
|
lower than 0.5 V
|
|
|
|
measure
resistance to ground:
|
higher than 100 kW
|
· Lead from 26-pin MID wiring harness
plug Ter. 10 to radio wiring harness plug Ter. 18 has short circuit to
+ battery voltage or to ground
|
|
|
· Measure resistance of lead between
26-pin MID wiring harness plug Ter. 10 and radio wiring harness plug Ter. 18:
|
lower than 2 W
|
· Lead from 26-pin MID wiring harness
plug Ter. 10 to radio wiring harness plug Ter. 18 is interrupted
|
|
|
|
|
If nominal
values are attained:
|
|
|
|
|
· MID defective
|
|
|
|
|
· Radio H1 defective
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
