PINPOINT TEST L: THE BRAKE WARNING INDICATOR IS NEVER/ALWAYS ON
Measure resistance between the low engine coolant switch C137, Pin 1, Circuit 45 (YE/RD) harness side and
ground.
Is resistance less than 5 ohms?
Yes
INSTALL a new low engine coolant switch. CLEAR the DTCs. REPEAT the self-test.
No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
K5
CHECK THE LOW ENGINE COOLANT SWITCH
Low Engine Coolant Switch C137
Did the indicator turn off?
Yes
INSTALL a new low engine coolant switch. CLEAR the DTCs. REPEAT the self-test.
No
GO to
K6
.
K6
CHECK CIRCUIT 794 (LB) FOR SHORT TO GROUND
Measure the resistance between low engine coolant switch C137 Pin 2, Circuit 794 (LB), harness side and
ground.
Is the resistance less than 5 ohms?
Yes
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
No
INSTALL a new instrument cluster; REFER to
Instrument Cluster
. CLEAR the DTCs. REPEAT the self-test.
CONDITIONS
DETAILS/RESULTS/ACTIONS
L1
CHECK IF THE GEM IS RECEIVING THE CORRECT IGNITION SWITCH STATUS
Page 21 of 32
1999 Mustang Workshop Manual
1/18/2013
http://www.fordtechservice.dealerconnection.com/pubs/content/~WSXB/~MUS~LEN/20/...
