Diagnostic Test

1. Turn ignition switch OFF.
2. Check the power steering control module harness connector for disconnection or looseness.
3. Disconnect power steering control module harness connector and then check the power steering control module pin terminals for damage or loose connection with harness connector.

Is the inspection result normal?

YES 

GO TO STEP 2  .

NO 

Repair or replace error-detected parts.GO TO STEP 2  .

Check continuity between power steering control module harness connector terminal and ground.

Is the inspection result normal?

YES 

GO TO STEP 3  .

NO 

Repair open circuit or short to ground or short to power in harness or connectors, and repair or replace error-detected parts.

1. Check voltage between power steering control module harness connector terminals and ground.

   Power steering control module		-	Voltage (Approx.)
   Connector	Terminal
   E222	1	Ground	8.5 - 18.5 V

2. Turn ignition switch ON.
   CAUTION:

   Never start the engine.

3. Check voltage between power steering control module harness connector terminals and ground.

   Power steering control module		-	Voltage (Approx.)
   Connector	Terminal
   E222	1	Ground	8.5 - 18.5 V

Is the inspection result normal?

YES 

GO TO STEP 5  .

NO 

GO TO STEP 4  .

1. Turn ignition switch OFF.
2. Check the 100A fusible link (#J).
3. Check the harness for open or short between power steering control module harness connector No. 1 terminal and the 100A fusible link (#J).

Is the inspection result normal?

YES 

Perform the trouble diagnosis for battery power supply circuit. Refer to WIRING DIAGRAM - BATTERY POWER SUPPLY - .

NO 

Repair or replace error-detected parts.

1. Check voltage between power steering control module harness connector terminals and ground.

   Power steering control module		-	Voltage (Approx.)
   Connector	Terminal
   E221	5	Ground	0 V

2. Turn ignition switch ON.
   CAUTION:

   Never start the engine.

3. Check voltage between power steering control module harness connector terminals and ground.

   Power steering control module		-	Voltage (Approx.)
   Connector	Terminal
   E221	5	Ground	8.5 - 18.5 V

Is the inspection result normal?

YES 

GO TO STEP 7  .

NO 

GO TO STEP 6  .

1. Turn ignition switch OFF.
2. Check the 10A fuse (#12).
3. Check continuity and short between power steering control module harness connector terminal and fuse block (J/B) harness connector terminal.

   Power steering control module		Fuse block (J/B)		Continuity
   Connector	Terminal	Connector	Terminal
   E221	5	E65	11F	Existed

4. Check continuity between power steering control module harness connector terminal and ground.

   Power steering control module		-	Continuity
   Connector	Terminal
   E221	5	Ground	Not existed

Is the inspection result normal?

YES 

Perform the trouble diagnosis for ignition power supply circuit. Refer to WIRING DIAGRAM - IGNITION POWER SUPPLY - .

NO 

Repair or replace error-detected parts.

With CONSULT 

Perform "EPS/DAST 3" self-diagnosis.

Is DTC "C1602" detected?

YES 

Power steering control module is malfunctioning. Replace steering oil pump assembly. Refer to REMOVAL AND INSTALLATION .

NO 

Repair or replace error-detected parts.