Spicer TPCS Troubleshooting Guide - Manual (Page 23)

20
Service Codes
Group: 1C! (Code 17)
Power (Code 17)
Switch off ignition.
Disconnect ECU connector.
Switch on ignition.
Check SWACC circuit by measuring voltage
between ECU harness connector pins K1 and K2.
With ignition switched on and engine running,
measure battery voltage across battery terminals.
Is voltage
reading > 32
volts?
Base vehicle power is out of range.
Refer to Service Manual
With ignition switched on but engine not running,
measure battery voltage across battery terminals.
Is voltage
reading
< 9 volts?
Does
measured
voltage match battery voltage
reading obtained in
previous
step?
Inspect for failure in SWACC circuit including
vehicle power panel and/or ground
connections. Repair or replace as indicated.
Is code 1C!
fault cleared?
Inspect wire sockets and ECU pins.
If okay, replace ECU.
Base vehicle power is out of range.
Refer to Service Manual
Yes
Yes
No
Yes
No
No
Yes
No
Complete