Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Refer to "SELF-DIAGNOSTIC RESULT MODE ".

Is any malfunction in the CAN communication indicated in the results?
1. YES: Check CAN communication line. Refer to "DTC U1000 CAN COMMUNICATION LINE ".
2. NO: GO TO 2.

CHECK POWER SOURCE

Turn ignition switch "ON". (Do not start engine.)

Check the voltage between tow mode switch connector terminal 1 and ground.

TOW MODE SWITCH CONNECTOR TERMINAL 1 AND GROUND VOLTAGE

Condition	Tow mode switch	Data (Approx.)
When ignition switch is turned to "ON"	ON	0V
When ignition switch is turned to "ON"	OFF	Battery voltage

Fig 1: Checking TOW Mode Switch Connector Terminal 1 And Ground Voltage

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: INSPECTION END
NG: GO TO 3.

CHECK TOW MODE SWITCH

Turn ignition switch "OFF".
Disconnect tow mode switch connector.

Check continuity between tow mode switch terminals 1 and 2.

TOW MODE SWITCH CONTINUITY

Condition	Continuity
Tow mode switch "ON"	Yes
Tow mode switch "OFF"	No

Fig 2: Checking TOW Mode Switch Continuity

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 4.
NG: Repair or replace tow mode switch.

DETECT MALFUNCTIONING ITEM
Check the following items. If any items are damaged, repair or replace damaged parts.
- Harness for short or open between combination meter connector terminal 35 and tow mode switch connector terminal 1.
- Harness for short or open between tow mode switch connector terminal 2 and ground.
OK or NG
1. OK: GO TO 5.
2. NG: Repair or replace damaged parts.
CHECK COMBINATION METER
Check the combination meter. Refer to "COMBINATION METERS ".

OK or NG
1. OK: INSPECTION END
2. NO: Repair or replace damaged parts.