COOLING(H4DO) > General Description
PREPARATION TOOL
1. SPECIAL TOOL
ILLUSTRATION | TOOL NUMBER | DESCRIPTION | REMARKS |

18355AA000
PULLEY WRENCH
• Used for removing and installing water pump pulley.
• Used with PULLEY WRENCH PIN SET (18334AA030).

18334AA030
PULLEY WRENCH PIN SET
• Used for removing and installing water pump pulley.
• Used together with PULLEY WRENCH (18355AA000).

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SUBARU SELECT MONITOR 4
Used for setting of each function and troubleshooting for electrical system.
NOTE:
For detailed operation procedures of Subaru Select Monitor 4, refer to “Application help”.
2. GENERAL TOOL
TOOL NAME | REMARKS |
Circuit tester | Used for measuring resistance, voltage and current. |
Radiator cap tester | Used for checking radiator and radiator cap. |
DST-i | Used together with Subaru Select Monitor 4. |
Component
RadiatorDtc b1863 short in driver s knee airbag (to +b)
AIRBAG SYSTEM (DIAGNOSTICS) > Diagnostic Chart with Trouble CodeDTC B1863 SHORT IN DRIVER’S KNEE AIRBAG (TO +B)Diagnosis start condition:Ignition voltage is 10 V to 16 V.DTC detecting condition:• Airbag main harness circuit is shorted to power supply.• Knee airbag module harness ...
Immobilizer
The Subaru Ascent is equipped with an advanced immobilizer system designed to
significantly reduce the risk of unauthorized engine start. This security feature
ensures that only keys or access key fobs that have been properly registered with
the Subaru Ascent immobilizer system can be used to ...
Removal
CRUISE CONTROL SYSTEM > Cruise Control Command SwitchREMOVALCAUTION:Before handling the airbag system components, refer to “CAUTION” of “General Description” in “AIRBAG SYSTEM”. General Description > CAUTION">1. Set the tire to the straight-ahead po ...