Pontiac Fiero 1988 Service Manual page 421

6D4-8 IGNITION SYSTEM
DISTRIBUTOR DISASSEMBLY
TEST A I D REASSEMBLY
ISEPARATELY MOUNTED COILI
HEI/EST
DISTRIBUTOR
4 TERMINAL
CONNECTOR
1. A TYPICAL DISTRIBUTOR USED WITH A
SEPARATELY MOUNTED COIL IS SHOWN.
TESTING IGNITION COIL
OHMMETER OHMMETER OHMMETER
2. CHECK IGNITION COIL WITH OHMMETER FOR
OPENS AND GROUNDS:
STEP 1. — USE HIGH SCALE. SHOULD READ VERY
HIGH (INFINITE). IF NOT, REPLACE COIL.
STEP 2. — USE LOW SCALE. SHOULD READ VERY
LOW OR ZERO. IF NOT, REPLACE COIL
STEP 3. — USE HIGH SCALE. SHOULD NOT READ
INFINITE. IF IT DOES, REPLACE COIL.
TESTING PICKUP COIL
PICKUP
OHMMETER
3. REMOVE ROTOR AND PICKUP COIL LEADS FROM
MODULE.
4. CONNECT OHMMETER PART 1 AND PART 2.
5. OBSERVE OHMMETER. FLEX LEADS BY HAND TO
CHECK FOR INTERMITTENT OPENS.
STEP 1 — SHOULD READ INFINITE AT ALL TIMES.
IF NOT, PICKUP COIL IS DEFECTIVE.
STEP 2 — SHOULD READ ONE STEADY VALUE
BETWEEN 500-1500 OHMS AS LEADS ARE FLEXED
BY HAND. IF NOT, PICKUP COIL IS DEFECTIVE.
DRIVING PIN FROM SHAFT
6. DRIVE ROLL PIN FROM GEAR AND REMOVE
SHAFT ASSEMBLY. MARK GEAR AND SHAFT FOR
CORRECT REASSEMBLY.
. . . 520035-6D
Fig. 8 0 2 Distributor Disassembly, Test and Reassembly (Separate Coil) 1 of 2