DTC P0562: POWER SUPPLY
ECM will set DTC P0562 and illuminate MIL if low charging system voltage is detected.
DTC P1401, OR P1402: DIAGNOSTIC MODULE-TANK LEAKAGE (DM-TL)
Failure Conditions (P1401)
ECM will set DTC P1401 and illuminate MIL if a Diagnostic Module-Tank Leakage (DM-TL) system malfunction is detected.
Failure Conditions (P1402)
ECM will set DTC P1402 and illuminate MIL if a DM-TL over-pressure motor malfunction is detected.
Testing for P1401 or P1402 not available from manufacturer.
DTC P0444 : EVAPORATIVE EMISSIONS (EVAP) PURGE CONTROL VALVE
NOTE: Purge control valve is part of the EVAP system. Purge control valve control purges air from EVAP canister.
Failure Conditions (P0444)
ECM will set DTC P0444 and illuminate MIL if an open circuit is detected in driver stage of EVAP system purge control solenoid circuit during 2 drive cycles.
1. Turn ignition off. Disconnect canister purge control valve connector. Turn ignition on. Measure voltage between ground and canister purge control valve connector terminal No. 1 (Pink/Black wire). If battery voltage exists, go to next step. If battery voltage does not exist, check ECU1 fuse (10-amp). If fuse is okay, repair open or short to ground in Green wire between engine control relay connector terminal No. 3 and canister purge control valve connector. See Fig. 2. When repairs are completed, clear DTC and verify system operation.
2. Turn ignition off. Disconnect ECM 63-pin connector. Connect a jumper wire between ground and canister purge control valve connector terminal No. 2 (Blue/Orange wire). Measure resistance between ground and ECM connector terminal No. 46 (Blue/Orange wire). See Fig. 1. If resistance is one ohm or less, remove jumper wire and go to next step. If resistance is more than one ohm, repair open in Blue/Orange wire between purge control valve and ECM. When repairs are completed, clear DTC and verify system operation.
3. Check for continuity between ground and purge control valve connector terminal No. 2 (Blue/Orange wire). If continuity does not exist, go to next step. If continuity exists, repair short to ground in (Blue/Orange wire) between purge control valve and ECM. When repairs are completed, clear DTC and verify system operation.
4. Measure resistance between canister purge control valve terminals No. 1 and 2 (component side). Resistance should be about 26 ohms at 68 F (20 C). If resistance is as specified, verify ECM connector terminals are clean and tight. If connector terminals are okay, replace canister purge control valve. If problem persists, replace ECM. If resistance not as specified, replace canister purge control valve. When repairs are completed, clear DTC and verify system operation.
P1507 is not found in database. Reconfirm code is correctly written.
All codes are related to EVAP system, check if all vacuum hoses are correctly connected.
Images (Click to enlarge)
Tuesday, March 1st, 2011 AT 4:09 PM