PINPOINT TEST M: THE CHARGE SYSTEM WARNING INDICATOR IS NEVER/ALWAYS ON
Is BRAKE warning indicator always on?
Yes
GO to
L12
.
No
INSTALL a new GEM. REFER to
Section 419-10
. CLEAR the DTCs. REPEAT the self-test.
L12
CHECK CIRCUIT 128 (VT/YE) FOR SHORT TO GROUND BETWEEN GEM AND INSTRUMENT CLUSTER
Instrument Cluster C251
Measure the resistance between GEM C352 Pin 13, Circuit 128 (VT/YE), harness side and ground.
Is resistance greater than 10,000 ohms?
Yes
INSTALL a new instrument cluster. REFER to
Instrument Cluster
. CLEAR the DTCs. REPEAT the self-test.
No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
CONDITIONS
DETAILS/RESULTS/ACTIONS
M1
CHECK CHARGING SYSTEM
Check charging system operation. Refer to
Section 414-00
.
Is the charging system operating correctly?
Yes
GO to
M2
.
No
REFER to
Section 414-00
.
M2
CHECK CHARGE SYSTEM WARNING INDICATOR WITH ENGINE OFF
Observe the charge system warning indicator.
Is the charge system warning indicator on?
Yes
GO to
M5
.
No
GO to
M3
.
M3
CHECK THE INSTRUMENT CLUSTER INPUT
Page 25 of 32
1999 Mustang Workshop Manual
1/18/2013
http://www.fordtechservice.dealerconnection.com/pubs/content/~WSXB/~MUS~LEN/20/...
