Engine Cranks But Will Not Start Or Engine Starts But Fuel Gauge And Tachometer Are Inoperative. Scan Tool Is Also Unable To Communicate With Pcm And DTC (01-T-26)

Publication date: 2001-05-01
Reference number: 01-T-26

ENGINE CRANKS BUT WILL NOT START OR ENGINE STARTS BUT FUEL GAUGE AND TACHOMETER ARE INOPERATIVE. SCAN TOOL IS ALSO UNABLE TO COMMUNICATE WITH PCM AND DTC

TECHNICAL SERVICE BULLETIN

Reference Number(s): 01-T-26, Date of Issue: May, 2001

SATURN:	2000-2001 S-Series vehicles
SECTION:	12-Engine

SUBJECT

Engine Cranks But Will Not Start or Engine Starts But Fuel Gauge and Tachometer Are Inoperative. Scan tool is also unable to communicate with PCM and DTC 1016 is stored in BCM and/or SDM (Verify Battery Cables and Ground Connections)

MODELS AFFECTED

2000-2001 Saturn S-Series vehicles

CONDITION

Some customers may comment that engine will crank but not will not start or engine starts but fuel gauge and tachometer are inoperative.

CAUSE

Intermittent battery cable or ground connection may eventually lead to a PCM class 2 communication failure. PCM communication may be restored by disconnecting and reconnecting battery.

CORRECTION

Disconnect, disassemble, and inspect positive and negative battery terminals and inspect engine harness grounds using the procedure in this bulletin. If necessary, replace battery terminal bolts.

PROCEDURE

With ignition On, verify the loss of communication with PCM and that DTC U1016 is stored in BCM and/or SDM with a scan tool.
Using a test light or volt meter verify that both the PCM B and PCM 1 fuses in Underhood Fuse Block (UHFB) are OK.
Disconnect both battery cables and remove bolts from terminals.
Inspect battery terminal and battery terminal bolts for signs of damaged threads. If threads are damaged, replace battery terminal bolt.
NOTE: If battery terminal thread damage . prevents proper installation with a new bolt, replace battery.
Reinstall both battery cables. Torque: Battery Terminal Bolts: 17 N.m (13 ft-lbs)
Inspect both main and rear engine grounds at top of transaxle housing for tight connection. See Fig 1 .
Inspect positive battery cable at starter solenoid for proper connection. See Fig 2 .
With ignition On and engine Off, connect scan tool and attempt to read data from PCM (disconnecting and reconnecting PCM power will likely restore normal operation).
- If communication cannot be established with PCM, start engine and clear any DTC's from BCM, SDM and PCM.
- If communication can not be established with PCM, refer to the service manual diagnostic chart for DTC U1016.

Fig 1: Main and Rear Engine Grounds

Fig 2: Proper Connection of Positive Battery Connect

PARTS REQUIREMENTS

08917444 - BOLT/SCREW-BAT CBL RET

CLAIM INFORMATION

To receive credit for this repair during warranty coverage period, submit a claim through the Saturn Dealer System as follows:

CLAIM INFORMATION

Case Type	Description	Labor Operation Type	Time
VW	Inspect Battery Terminals and Engine Harness Grounds	Z4154	0.4 hrs.
ADD:	To Replace Both Battery Terminals Bolts, if Necessary	---	0.1 hrs.
ADD:	To Replace Battery, if Necessary	---	0.2 hrs.