AWD Control Switch Circuit [10/2022 - ]: Procedure

1. Simultaneously display the "Off-road Mode Selection Signal" four wheel drive Data List item and the "Off-road Guidance Status" engine Data List item.
2. According to the display on the GTS, read the Data List.

   Chassis > Four Wheel Drive > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Off-road Mode Selection Signal	Off-road mode selection signal	Normal / Grass & Snow / Mud & Sand / Loose Rock / Mogul / Rock & Dirt / Rock / E-Lock	-	-

   Powertrain > Engine > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Off-road Guidance Status	Off road mode status	Normal / Grass & Snow / Mud & Sand / Loose Rock / Mogul or Rock & Dirt	-	-

   Chassis > Four Wheel Drive > Data List 

   Tester Display
   Off-road Mode Selection Signal

   Powertrain > Engine > Data List 

   Tester Display
   Off-road Guidance Status

3. Operate the multi-terrain select switch (crawl control switch assembly) and check that the Data List display and multi-information display message change according to switch operation.

   OK

   Multi-terrain Select Switch (Crawl Control Switch Assembly) Operation	Data List Display	Multi-information Display Message
   NORMAL	Normal	-
   MUD&SAND	Mud & Sand	MUD&SAND
   ROCK&DIRT	Rock & Dirt	ROCK&DIRT

   Result

   Result	Proceed to
   When the switch is operated, the Data List display (Off-road Mode Selection Signal and Off-road Guidance Status) and message do not change	A
   When the switch is operated, the Data List display (Off-road Mode Selection Signal) changes, but the Data List display (Off-road Guidance Status) and message do not change	B
   When the switch is operated, the Data List display (Off-road Mode Selection Signal and Off-road Guidance Status) changes, but the message does not change	C
   When the switch is operated, the Data List display and message change normally	D

Result: 

B 

REPLACE ECM. Refer to  REMOVAL [10/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

Result: 

C 

GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] 

Result: 

D 

CHECK INTERMITTENT PROBLEMS. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] 

Result: 

A 

See step  2

Refer to INSPECTION [12/2019 - ]

Result

Result: 

NG 

REPLACE MULTI-TERRAIN SELECT SWITCH (CRAWL CONTROL SWITCH ASSEMBLY). Refer to  REMOVAL [12/2019 - ] 

Result: 

OK 

See step  3

1. Disconnect the M42 4WD ECU assembly connector.
2. Disconnect the P10 multi-terrain select switch (crawl control switch assembly) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   M42-18 (OMS) - P10-6 (B)	Always	Below 1 Ω
   M42-19 (OMSG) - P10-3 (E)	Always	Below 1 Ω
   M42-18 (OMS) or P10-6 (B) - Body ground	Always	10 kΩ or higher
   M42-19 (OMSG) or P10-3 (E) - Body ground	Always	10 kΩ or higher
   M42-18 (OMS) or P10-6 (B) - M42-19 (OMSG) or P10-3 (E)	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE 4WD ECU ASSEMBLY. Refer to  REMOVAL [12/2019 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR