Special Service Tool
The actual shapes of the tools may differ from those illustrated here.

Precaution
Periodic maintenanceBasic inspection
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow (With GR8-1200 NI)
STARTING SYSTEM DIAGNOSIS WITH GR8-1200 NI
To test the starting system, use the following special service tool:
GR8-1200 NI Multitasking battery and electrical diagnostic station
NOTE: Refer to the diagnostic station
Instru ...
ADP branch line circuit
Diagnosis Procedure
1.CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative
terminal.
Check the following terminals and connectors
for damage, bend and loose connection (unit side and connector
side).
...
Combination switch input circuit
Diagnosis Procedure
1. CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN
Turn the ignition switch OFF.
Disconnect the BCM and combination switch.
Check continuity between BCM harness connector and combination
switch harness connector.
2. CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR SHORT
...